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<title>Symbiotic binary</title>

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<span id="openzim-page-title" class="mw-page-title-main"><span class="mw-page-title-main">Symbiotic binary</span></span>

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<p>A <b>symbiotic binary</b> is a type of <a href="Binary_star" title="Binary star">binary star</a> system, often simply called a <b>symbiotic star</b>. They usually contain a <a href="White_dwarf" title="White dwarf">white dwarf</a> with a companion <a href="Red_giant" title="Red giant">red giant</a>. The cool giant star loses material via <a href="Roche_lobe" title="Roche lobe">Roche lobe</a> overflow or through its <a href="Stellar_wind" title="Stellar wind">stellar wind</a>, which flows onto the hot compact star, usually via an <a href="Accretion_disk" title="Accretion disk">accretion disk</a>.

</p><p>Symbiotic binaries are of particular interest to astronomers as they can be used to learn about stellar evolution. They are also vital in the study of stellar wind, ionized nebulae, and <a href="Accretion_(astrophysics)" title="Accretion (astrophysics)">accretion</a> because of the unique interstellar dynamics present within the system.

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<div class="mw-heading mw-heading2"><h2 id="Variability">Variability</h2></div>

<p>Many symbiotic binaries show brightness changes and are classified as <a href="Variable_star" title="Variable star">variable stars</a>. The star <a href="Z_Andromedae" title="Z Andromedae">Z Andromedae</a> is often considered the prototype of the symbiotic binary class of stars. More commonly it is considered as the prototype of only a subset of symbiotic stars with irregular variations up to about 4 <a href="Apparent_magnitude" title="Apparent magnitude">magnitudes</a> in amplitude. Even the Z Andromedae variable stars are thought to be an inhomogeneous group. The so-called <a href="Symbiotic_nova" title="Symbiotic nova">symbiotic novae</a> are a closely related class of symbiotic binaries, more formally known as type NC <a href="Nova" title="Nova">novae</a>. They appear similar to classical novae but have extremely slow outbursts that can remain near maximum brightness for years.<sup id="cite_ref-gcvs_1-0" class="reference"><a href="#cite_note-gcvs-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>

</p><p>The typical behavior of symbiotic binaries can be divided into two phases, based on the rate of accretion to the compact component. The two phases have very different luminosities, but the systems are often also variable in each phase.

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<div class="mw-heading mw-heading3"><h3 id="Quiescent_phase">Quiescent phase</h3></div>

<p>When the accretion, mass-loss and ionization processes are all in equilibrium between the stars, the system is said to be in quiescence. At this point, the system will continue to release energy at an approximately average rate.<sup id="cite_ref-LCskopal_2-0" class="reference"><a href="#cite_note-LCskopal-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> This can be observed through the <a href="Spectral_energy_distribution" title="Spectral energy distribution">spectral energy distribution</a> (SED) of the star which will remain relatively constant.

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<div class="mw-heading mw-heading3"><h3 id="Active_phase">Active phase</h3></div>

<p>If the equilibrium of a quiescent symbiotic star is disturbed, it will transition into an active phase. This phase is shown through a large change in both the nature of the radiation from the star, and a brightening of the optical emission of the star by several magnitudes. The transitions between phases are poorly understood, and it is currently difficult to predict when a star will transition into an active phase from quiescence, or when it will return to quiescence. Many systems have not yet been observed to enter an active state. Others, however, such as <a href="AG_Draconis" title="AG Draconis">AG Draconis</a> enter active phases on a regular and cyclical basis.<sup id="cite_ref-LCskopal_2-1" class="reference"><a href="#cite_note-LCskopal-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>

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<div class="mw-heading mw-heading2"><h2 id="Nomenclature">Nomenclature</h2></div>

<p>The term 'symbiotic star' was first used in 1958 in a publication about 'stars of composite spectra'.<sup id="cite_ref-tomokazu_3-0" class="reference"><a href="#cite_note-tomokazu-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> However, the distinct category of symbiotic stars had been previously known. They were first recognized as a class of stars with unique spectroscopic qualities by <a href="Annie_Cannon" class="mw-redirect" title="Annie Cannon">Annie Cannon</a> near the beginning of the 20th century. Their binary nature was made clear by the simultaneous existence of the spectral lines indicative of a red giant and of a white dwarf or neutron star.<sup id="cite_ref-asp_4-0" class="reference"><a href="#cite_note-asp-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup>

</p><p>Symbiotic stars are all binaries and so the term <i>symbiotic binary</i> is synonymous. Many are variable and the term <i>symbiotic variable</i> or <i>symbiotic variable star</i> is sometimes also used synonymously, but more commonly is used only for Z Andromedae variable stars.<sup id="cite_ref-skopal2005_5-0" class="reference"><a href="#cite_note-skopal2005-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup>

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<div class="mw-heading mw-heading3"><h3 id="Sub-types">Sub-types</h3></div>

<p>Symbiotic binaries are often divided into two sub-types based on the nature of the continuum in their spectra. <i>S-type</i> systems have a stellar continuum since the giant component is not obscured.<sup id="cite_ref-skopal2005_5-1" class="reference"><a href="#cite_note-skopal2005-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> <i>D-type</i> systems are surrounded by optically thick dusty nebulosity and the star itself is not directly visible. D-type systems tend to contain a <a href="Mira_variable" title="Mira variable">Mira variable</a> or other <a href="Long_period_variable" class="mw-redirect" title="Long period variable">long period variable</a> star.<sup id="cite_ref-Mikołajewska_6-0" class="reference"><a href="#cite_note-Mikołajewska-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup>

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<p>Some symbiotic stars have <a href="Astrophysical_jet" title="Astrophysical jet">jets</a> which are a collimated outflow of material. These typically are bi-polar and extend from both poles of the white dwarf. Jets are most commonly observed on stars which are currently in active phase or outburst. Once the outburst has ended, the jet fades and the ejected emissions dissipate. It has been argued that the jets present in symbiotic stars could help further the understanding of jets in other systems, such as in <a href="Active_galactic_nucleus" title="Active galactic nucleus">active galactic nuclei</a>.<sup id="cite_ref-sokoloski_7-0" class="reference"><a href="#cite_note-sokoloski-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup>

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<div class="mw-heading mw-heading2"><h2 id="References">References</h2></div>

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</style><cite id="CITEREFSamusDurlevich2009" class="citation journal cs1">Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". <i>VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S</i>. <b>1</b>. <a href="Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2009yCat....102025S">2009yCat....102025S</a>.</cite></span>

</li>

<li id="cite_note-LCskopal-2"><span class="mw-cite-backlink">^ <a href="#cite_ref-LCskopal_2-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-LCskopal_2-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><cite id="CITEREFSkopal2008" class="citation journal cs1">Skopal, Augustin (8 May 2008). "How to understand the light curves of symbiotic stars". <i>Journal of the American Association of Variable Star Observers</i>. <b>36</b> (1): 9. <a href="ArXiv_(identifier)" class="mw-redirect" title="ArXiv (identifier)">arXiv</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://arxiv.org/abs/0805.1222">0805.1222</a></span>. <a href="Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2008JAVSO..36....9S">2008JAVSO..36....9S</a>.</cite></span>

</li>

<li id="cite_note-tomokazu-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-tomokazu_3-0">^</a></b></span> <span class="reference-text"><cite id="CITEREFTomokazu_KogureKam-Ching_Leung2010" class="citation book cs1">Tomokazu Kogure; Kam-Ching Leung (5 May 2010). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=qt5sueHmtR4C&pg=PR5"><i>The Astrophysics of Emission-Line Stars</i></a>. Springer Science & Business Media. pp. 5–. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>978-0-387-68995-1</bdi>.</cite></span>

</li>

<li id="cite_note-asp-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-asp_4-0">^</a></b></span> <span class="reference-text"><cite id="CITEREFMikołajewska2002" class="citation journal cs1">Mikołajewska, Joanna (2002). "Orbital and stellar parameters of symbiotic stars". <i>ASP Conference Series</i>. <b>303</b>: 9. <a href="ArXiv_(identifier)" class="mw-redirect" title="ArXiv (identifier)">arXiv</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://arxiv.org/abs/astro-ph/0210489">astro-ph/0210489</a></span>. <a href="Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2003ASPC..303....9M">2003ASPC..303....9M</a>.</cite></span>

</li>

<li id="cite_note-skopal2005-5"><span class="mw-cite-backlink">^ <a href="#cite_ref-skopal2005_5-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-skopal2005_5-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><cite id="CITEREFSkopal2005" class="citation journal cs1">Skopal, A (2005). "Disentangling the composite continuum of symbiotic binaries. I. S-type systems". <i>Astronomy and Astrophysics</i>. <b>440</b> (3): <span class="nowrap">995–</span>1031. <a href="ArXiv_(identifier)" class="mw-redirect" title="ArXiv (identifier)">arXiv</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://arxiv.org/abs/astro-ph/0507272">astro-ph/0507272</a></span>. <a href="Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2005A&A...440..995S">2005A&A...440..995S</a>. <a href="Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1051%2F0004-6361%3A20034262">10.1051/0004-6361:20034262</a>. <a href="S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:15292910">15292910</a>.</cite></span>

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<li id="cite_note-Mikołajewska-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-Mikołajewska_6-0">^</a></b></span> <span class="reference-text"><cite id="CITEREFMikołajewska2007" class="citation journal cs1">Mikołajewska, J (2007). "Symbiotic Stars: Continually Embarrassing Binaries". <i>Baltic Astronomy</i>. <b>16</b>: 1. <a href="Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2007BaltA..16....1M">2007BaltA..16....1M</a>.</cite></span>

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<li id="cite_note-sokoloski-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-sokoloski_7-0">^</a></b></span> <span class="reference-text"><cite id="CITEREFSokoloski2003" class="citation journal cs1">Sokoloski, J. L. (June 20, 2003). "Symbiotic Stars as Laboratories for the Study of Accretion and Jets: A Call for Optical Monitoring". <i>Journal of the American Association of Variable Star Observers</i>. <b>31</b> (2): <span class="nowrap">89–</span>102. <a href="ArXiv_(identifier)" class="mw-redirect" title="ArXiv (identifier)">arXiv</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://arxiv.org/abs/astro-ph/0403004">astro-ph/0403004</a></span>. <a href="Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2003JAVSO..31...89S">2003JAVSO..31...89S</a>.</cite></span>

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<div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2></div>

<ul><li><a rel="nofollow" class="external text" href="http://www.iphas.org/symbiotics/">List of symbiotic stars</a> discovered by <a href="IPHAS" class="mw-redirect" title="IPHAS">IPHAS</a></li>

<li><a rel="nofollow" class="external text" href="http://www.astro.ex.ac.uk/people/th2/symbo.html">Symbiotic binaries</a> Astrophysics Group, <a href="University_of_Exeter" title="University of Exeter">University of Exeter</a></li></ul>

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<li><a href="Hayashi_track" title="Hayashi track">Hayashi track</a></li>

<li><a href="Henyey_track" title="Henyey track">Henyey track</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Stellar_evolution" title="Stellar evolution">Evolution</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Main_sequence" title="Main sequence">Main sequence</a></li>

<li><a href="Red-giant_branch" title="Red-giant branch">Red-giant branch</a></li>

<li><a href="Horizontal_branch" title="Horizontal branch">Horizontal branch</a>

<ul><li><a href="Red_clump" title="Red clump">Red clump</a></li></ul></li>

<li><a href="Asymptotic_giant_branch" title="Asymptotic giant branch">Asymptotic giant branch</a>

<li><a href="Super-AGB_star" title="Super-AGB star">super-AGB</a></li></ul></li>

<li><a href="Planetary_nebula" title="Planetary nebula">Planetary nebula</a>

<ul><li><a href="Protoplanetary_nebula" title="Protoplanetary nebula">Protoplanetary</a></li></ul></li>

<li><a href="Wolf%E2%80%93Rayet_nebula" title="Wolf–Rayet nebula">Wolf–Rayet nebula</a></li>

<li><a href="Dredge-up" title="Dredge-up">Dredge-up</a></li>

<li><a href="Instability_strip" title="Instability strip">Instability strip</a></li>

<li><a href="Luminous_blue_variable" title="Luminous blue variable">Luminous blue variable</a></li>

<li><a href="Stellar_population" title="Stellar population">Stellar population</a></li>

<li><a href="Supernova" title="Supernova">Supernova</a>

<ul><li><a href="Superluminous_supernova" title="Superluminous supernova">Superluminous</a></li>

<li><a href="Hypernova" title="Hypernova">Hypernova</a></li></ul></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Stellar_classification" title="Stellar classification">Classification</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Early-type_star" class="mw-redirect" title="Early-type star">Early</a></li>

<li>Main sequence

<li><a href="Subdwarf" title="Subdwarf">Subdwarf</a>

<li><a href="Subgiant" title="Subgiant">Subgiant</a></li>

<li><a href="Giant_star" title="Giant star">Giant</a>

<li><a href="Yellow_giant" class="mw-redirect" title="Yellow giant">Yellow</a></li></ul></li>

<li><a href="Bright_giant" class="mw-redirect" title="Bright giant">Bright giant</a></li>

<li><a href="Supergiant" title="Supergiant">Supergiant</a>

<li><a href="Yellow_supergiant" title="Yellow supergiant">Yellow</a></li></ul></li>

<li><a href="Hypergiant" title="Hypergiant">Hypergiant</a>

<ul><li><a href="Yellow_hypergiant" title="Yellow hypergiant">Yellow</a></li></ul></li>

<li><a href="Carbon_star" title="Carbon star">Carbon</a>

<li><a href="White_dwarf" title="White dwarf">White dwarf</a></li>

<li><a href="Chemically_peculiar_star" title="Chemically peculiar star">Chemically peculiar</a>

<li><a href="Barium_star" title="Barium star">Barium</a></li>

<li><a href="Lambda_Bo%C3%B6tis_star" title="Lambda Boötis star">Lambda Boötis</a></li>

<li><a href="Technetium_star" title="Technetium star">Technetium</a></li></ul></li>

<ul><li><a href="Shell_star" title="Shell star">Shell</a></li></ul></li>

<li><a href="Helium_star" title="Helium star">Helium</a>

<ul><li><a href="Extreme_helium_star" title="Extreme helium star">Extreme</a></li></ul></li>

<li><a href="Blue_straggler" title="Blue straggler">Blue straggler</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Compact_star" class="mw-redirect" title="Compact star">Remnants</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Compact_star" class="mw-redirect" title="Compact star">Compact star</a></li>

<li><a href="IRAS_00500%2B6713" title="IRAS 00500+6713">Parker's star</a></li>

<li><a href="White_dwarf" title="White dwarf">White dwarf</a>

<ul><li><a href="Helium_planet" title="Helium planet">Helium planet</a></li></ul></li>

<li><a href="Neutron_star" title="Neutron star">Neutron</a>

<ul><li><a href="Radio-quiet_neutron_star" title="Radio-quiet neutron star">Radio-quiet</a></li>

<li><a href="Pulsar" title="Pulsar">Pulsar</a>

<ul><li><a href="Binary_pulsar" title="Binary pulsar">Binary</a></li>

<li><a href="Magnetar" title="Magnetar">Magnetar</a></li></ul></li>

<li><a href="Stellar_black_hole" title="Stellar black hole">Stellar black hole</a></li>

<li><a href="X-ray_binary" title="X-ray binary">X-ray binary</a>

<ul><li><a href="X-ray_burster" title="X-ray burster">Burster</a></li></ul></li>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Hypothetical_star" title="Hypothetical star">Hypothetical</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Blue_dwarf_(red-dwarf_stage)" title="Blue dwarf (red-dwarf stage)">Blue dwarf</a></li>

<li><a href="Black_dwarf" title="Black dwarf">Black dwarf</a></li>

<li><a href="Exotic_star" title="Exotic star">Exotic</a>

<ul><li><a href="Boson_star" class="mw-redirect" title="Boson star">Boson</a></li>

<li><a href="Electroweak_star" class="mw-redirect" title="Electroweak star">Electroweak</a></li>

<li><a href="Strange_star" title="Strange star">Strange</a></li>

<li><a href="Preon_star" class="mw-redirect" title="Preon star">Preon</a></li>

<li><a href="Planck_star" title="Planck star">Planck</a></li>

<li><a href="Dark-energy_star" title="Dark-energy star">Dark-energy</a></li>

<li><a href="Quark_star" title="Quark star">Quark</a></li>

<li>Black hole star

<ul><li><a href="Black_star_(semiclassical_gravity)" title="Black star (semiclassical gravity)">Black</a></li>

<li>Hawking</li>

<li><a href="Quasi-star" title="Quasi-star">Quasi-star</a></li></ul></li>

<li><a href="Gravastar" title="Gravastar">Gravastar</a></li>

<li><a href="Thorne%E2%80%93%C5%BBytkow_object" title="Thorne–Żytkow object">Thorne–Żytkow object</a></li>

<li><a href="Blitzar" title="Blitzar">Blitzar</a></li>

<li><a href="White_hole" title="White hole">White hole</a></li></ul>

</div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Stellar_nucleosynthesis" title="Stellar nucleosynthesis">Nucleosynthesis</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Deuterium_fusion" title="Deuterium fusion">Deuterium burning</a></li>

<li><a href="Lithium_burning" title="Lithium burning">Lithium burning</a></li>

<li><a href="Proton%E2%80%93proton_chain" title="Proton–proton chain">Proton–proton chain</a></li>

<li><a href="CNO_cycle" title="CNO cycle">CNO cycle</a></li>

<li><a href="Helium_flash" title="Helium flash">Helium flash</a></li>

<li><a href="Triple-alpha_process" title="Triple-alpha process">Triple-alpha process</a></li>

<li><a href="Alpha_process" title="Alpha process">Alpha process</a></li>

<li><a href="Carbon-burning_process" title="Carbon-burning process">C burning</a></li>

<li><a href="Neon-burning_process" title="Neon-burning process">Ne burning</a></li>

<li><a href="Oxygen-burning_process" title="Oxygen-burning process">O burning</a></li>

<li><a href="Silicon-burning_process" title="Silicon-burning process">Si burning</a></li>

<li><a href="S-process" title="S-process">s-process</a></li>

<li><a href="R-process" title="R-process">r-process</a></li>

<li><a href="P-process" title="P-process">p-process</a></li>

<ul><li><a href="Symbiotic_nova" title="Symbiotic nova">Symbiotic</a></li>

<li><a href="Nova_remnant" title="Nova remnant">Remnant</a></li>

<li><a href="Luminous_red_nova" title="Luminous red nova">Luminous red nova</a></li>

<li><a href="Nova#Recurrent_novae" title="Nova">Recurrent</a></li>

<li><a href="Micronova" title="Micronova">Micronova</a></li></ul></li>

<li><a href="Supernova_nucleosynthesis" title="Supernova nucleosynthesis">Supernova</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Stellar_structure" title="Stellar structure">Structure</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="Convection_zone" title="Convection zone">Convection zone</a>

<ul><li><a href="Microturbulence" title="Microturbulence">Microturbulence</a></li>

<li><a href="Solar-like_oscillations" title="Solar-like oscillations">Oscillations</a></li></ul></li>

<li><a href="Radiation_zone" class="mw-redirect" title="Radiation zone">Radiation zone</a></li>

<li><a href="Stellar_atmosphere" title="Stellar atmosphere">Atmosphere</a>

<ul><li><a href="Photosphere" title="Photosphere">Photosphere</a></li>

<li><a href="Starspot" title="Starspot">Starspot</a></li>

<li><a href="Chromosphere" title="Chromosphere">Chromosphere</a></li>

<li><a href="Stellar_corona" title="Stellar corona">Stellar corona</a></li>

<li><a href="Alfv%C3%A9n_surface" title="Alfvén surface">Alfvén surface</a></li></ul></li>

<li><a href="Stellar_wind" title="Stellar wind">Stellar wind</a>

<ul><li><a href="Stellar-wind_bubble" title="Stellar-wind bubble">Bubble</a></li>

<li><a href="Bipolar_outflow" title="Bipolar outflow">Bipolar outflow</a></li></ul></li>

<li><a href="Accretion_disk" title="Accretion disk">Accretion disk</a>

<ul><li><a href="Protoplanetary_disk" title="Protoplanetary disk">Protoplanetary disk</a></li>

<li><a href="Proplyd" title="Proplyd">Proplyd</a></li></ul></li>

<li><a href="Asteroseismology" title="Asteroseismology">Asteroseismology</a>

<ul><li><a href="Helioseismology" title="Helioseismology">Helioseismology</a></li></ul></li>

<li><a href="Circumstellar_dust" title="Circumstellar dust">Circumstellar dust</a></li>

<li><a href="Cosmic_dust" title="Cosmic dust">Cosmic dust</a></li>

<li><a href="Circumstellar_envelope" title="Circumstellar envelope">Circumstellar envelope</a></li>

<li><a href="Eddington_luminosity" title="Eddington luminosity">Eddington luminosity</a></li>

<li><a href="Kelvin%E2%80%93Helmholtz_mechanism" title="Kelvin–Helmholtz mechanism">Kelvin–Helmholtz mechanism</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Properties</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Stellar_designations_and_names" title="Stellar designations and names">Designation</a></li>

<li><a href="Stellar_dynamics" title="Stellar dynamics">Dynamics</a></li>

<li><a href="Effective_temperature" title="Effective temperature">Effective temperature</a></li>

<li><a href="Luminosity" title="Luminosity">Luminosity</a></li>

<li><a href="Stellar_kinematics" title="Stellar kinematics">Kinematics</a></li>

<li><a href="Stellar_magnetic_field" title="Stellar magnetic field">Magnetic field</a></li>

<li><a href="Absolute_magnitude" title="Absolute magnitude">Absolute magnitude</a></li>

<li><a href="Metallicity" title="Metallicity">Metallicity</a></li>

<li><a href="Stellar_rotation" title="Stellar rotation">Rotation</a>

<ul><li><a href="Gravity_darkening" title="Gravity darkening">Gravity darkening</a></li></ul></li>

<li><a href="Starlight" title="Starlight">Starlight</a></li>

<li><a href="Variable_star" title="Variable star">Variable</a></li>

<li><a href="Photometric_system" title="Photometric system">Photometric system</a></li>

<li><a href="Color_index" title="Color index">Color index</a></li>

<li><a href="Hertzsprung%E2%80%93Russell_diagram" title="Hertzsprung–Russell diagram">Hertzsprung–Russell diagram</a></li>

<li><a href="Color%E2%80%93color_diagram" title="Color–color diagram">Color–color diagram</a></li>

<li><a href="Str%C3%B6mgren_sphere" title="Strömgren sphere">Strömgren sphere</a></li>

<li><a href="Kraft_break" title="Kraft break">Kraft break</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Star_system" title="Star system">Star systems</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Binary_star" title="Binary star">Binary</a>

<ul><li><a href="Contact_binary" title="Contact binary">Contact</a></li>

<li><a href="Common_envelope" title="Common envelope">Common envelope</a></li>

<li><a href="Eclipsing_binary" class="mw-redirect" title="Eclipsing binary">Eclipsing</a></li>

</ul></li>

<li><a href="Star_system#Multiple_star_systems" title="Star system">Multiple</a></li>

<li><a href="Star_cluster" title="Star cluster">Cluster</a>

<li><a href="Globular_cluster" title="Globular cluster">Globular</a></li>

<li><a href="Super_star_cluster" title="Super star cluster">Super</a></li></ul></li>

<li><a href="Planetary_system" title="Planetary system">Planetary system</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Earth-centric<br>observations</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Solar_eclipse" title="Solar eclipse">Solar eclipse</a></li>

<li><a href="Solar_radio_emission" title="Solar radio emission">Solar radio emission</a></li>

<li><a href="Solar_System" title="Solar System">Solar System</a></li>

<li><a href="Sunlight" title="Sunlight">Sunlight</a></li></ul></li>

<li><a href="Circumpolar_star" title="Circumpolar star">Circumpolar</a></li>

<li><a href="Constellation" title="Constellation">Constellation</a></li>

<li><a href="Asterism_(astronomy)" title="Asterism (astronomy)">Asterism</a></li>

<li><a href="Magnitude_(astronomy)" title="Magnitude (astronomy)">Magnitude</a>

<ul><li><a href="Apparent_magnitude" title="Apparent magnitude">Apparent</a></li>

<li><a href="Extinction_(astronomy)" title="Extinction (astronomy)">Extinction</a></li>

<li><a href="Photographic_magnitude" title="Photographic magnitude">Photographic</a></li></ul></li>

<li><a href="Radial_velocity" title="Radial velocity">Radial velocity</a></li>

<li><a href="Proper_motion" title="Proper motion">Proper motion</a></li>

<li><a href="Stellar_parallax" title="Stellar parallax">Parallax</a></li>

<li><a href="Photometric-standard_star" title="Photometric-standard star">Photometric-standard</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Lists_of_stars" title="Lists of stars">Lists</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="List_of_proper_names_of_stars" title="List of proper names of stars">Proper names</a>

<ul><li><a href="List_of_Arabic_star_names" title="List of Arabic star names">Arabic</a></li>

<li><a href="Chinese_star_names" class="mw-redirect" title="Chinese star names">Chinese</a></li></ul></li>

<li><a href="List_of_star_extremes" title="List of star extremes">Extremes</a>

<ul><li><a href="List_of_most_massive_stars" title="List of most massive stars">Most massive</a></li>

<li><a href="List_of_hottest_stars" title="List of hottest stars">Highest temperature</a></li>

<li><a href="List_of_coolest_stars" title="List of coolest stars">Lowest temperature</a></li>

<li><a href="List_of_largest_stars" title="List of largest stars">Largest volume</a></li>

<li><a href="List_of_smallest_known_stars" title="List of smallest known stars">Smallest volume</a></li>

<li><a href="List_of_brightest_stars" title="List of brightest stars">Brightest</a></li>

<li><a href="Historical_brightest_stars" title="Historical brightest stars">Historical brightest</a></li>

<li><a href="List_of_most_luminous_stars" title="List of most luminous stars">Most luminous</a></li>

<li><a href="List_of_nearest_stars" title="List of nearest stars">Nearest</a>

<ul><li><a href="List_of_nearest_bright_stars" title="List of nearest bright stars">bright</a></li></ul></li></ul></li>

<li><a href="List_of_most_distant_stars" title="List of most distant stars">Most distant</a></li>

<li><a href="List_of_stars_with_resolved_images" title="List of stars with resolved images">With resolved images</a></li>

<li><a href="List_of_multiplanetary_systems" title="List of multiplanetary systems">With multiple exoplanets</a></li>

<li><a href="List_of_brown_dwarfs" title="List of brown dwarfs">Brown dwarfs</a></li>

<li><a href="List_of_red_dwarfs" title="List of red dwarfs">Red dwarfs</a></li>

<li><a href="List_of_white_dwarfs" title="List of white dwarfs">White dwarfs</a></li>

<li><a href="List_of_novae_in_the_Milky_Way_galaxy" title="List of novae in the Milky Way galaxy">Milky Way novae</a></li>

<li><a href="List_of_supernovae" title="List of supernovae">Supernovae</a>

<ul><li><a href="List_of_supernova_candidates" title="List of supernova candidates">Candidates</a></li>

<li><a href="List_of_supernova_remnants" title="List of supernova remnants">Remnants</a></li></ul></li>

<li><a href="List_of_planetary_nebulae" title="List of planetary nebulae">Planetary nebulae</a></li>

<li><a href="Timeline_of_stellar_astronomy" title="Timeline of stellar astronomy">Timeline of stellar astronomy</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Substellar_object" title="Substellar object">Substellar object</a>

<ul><li><a href="Brown_dwarf" title="Brown dwarf">Brown dwarf</a>

<ul><li><a href="Brown-dwarf_desert" title="Brown-dwarf desert">Desert</a></li>

<li><a href="Planet" title="Planet">Planet</a></li></ul></li>

<li><a href="Galactic_year" title="Galactic year">Galactic year</a></li>

<li><a href="Galaxy" title="Galaxy">Galaxy</a></li>

<li><a href="Guest_star_(astronomy)" title="Guest star (astronomy)">Guest</a></li>

<li><a href="Gravity" title="Gravity">Gravity</a></li>

<li><a href="Intergalactic_star" title="Intergalactic star">Intergalactic</a></li>

<li><a href="Neutron_star_merger" title="Neutron star merger">Neutron star merger</a></li>

<li><a href="Planet-hosting_stars" class="mw-redirect" title="Planet-hosting stars">Planet-hosting stars</a></li>

<li><a href="Stellar_collision" title="Stellar collision">Stellar collision</a></li>

<li><a href="Stellar_engulfment" title="Stellar engulfment">Stellar engulfment</a></li>

<li><a href="Tidal_disruption_event" title="Tidal disruption event">Tidal disruption event</a></li></ul>

</div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div>

<ul><li><span class="noviewer" typeof="mw:File"><span title="Category"></span></span> Category</li>

<li><span class="nowrap"><span class="noviewer" typeof="mw:File"></span> </span><a href="Portal%3AStars" title="Portal:Stars">Stars portal</a></li></ul>

</div></td></tr></tbody></table></div></div><div><div class="zim-footer">

This article is issued from <a class="external text" title="Last edited on 2024-07-25" href="https://en.wikipedia.org/wiki/?title=Symbiotic_binary&oldid=1236670200">Wikipedia</a>. The text is available under <a class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.en">Creative Commons Attribution-Share Alike 4.0</a> unless otherwise noted. Additional terms may apply for the media files.

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