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CRL 618
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
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Datenbanklinks zu CRL 618
CRL 618, auch nach dem Entdecker der Infrarotquelle William E. Westbrook Westbrook Nebula, seltener deutsch Westbrook-Nebel, ist ein prΓ€planetarischer Nebel.cite-ref-2[2]
Der Nebel wird durch einen Stern der Spektralklasse B0 geformt, welcher verdeckt im Zentrum liegt und seit etwa 200 Jahren Gase mit einer Geschwindigkeit von 200 km/s auswirft.cite-ref-3[3] Die bipolaren StrΓΆme, etwa 24Β° gegenΓΌber der Sichtlinie gekippt, bestehen ΓΌberwiegend aus molekularem Gas, das in den AuΓenbereichen mit Γ€lteren Gaseruptionen eine Schockfront bildet. Der Zentralstern hat etwa die 12.200-fache Sonnenleuchtkraft.cite-ref-apj578-4-0[4]
Contents
β’ Weblinks
β’ Einzelnachweise
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
Weblinks
Einzelnachweise
cite-note-simbad-11. Westbrook Nebula -- Post-AGB Star. In: SIMBAD. Centre de DonnΓ©es astronomiques de Strasbourg, abgerufen am 16. April 2009 (englisch).
cite-note-22. β Westbrook, W. E.; Gezari, D. Y.; Hauser, M. G.; Werner, M. W.; Elias, J. H.; Neugebauer, G.; Lo, K. Y.: One-millimeter continuum emission studies of four molecular clouds. In: Astrophysical Journal. 209. Jahrgang, 1976, S. 94β101, doi:10.1086/154695, bibcode:1976ApJ...209...94W (englisch).
cite-note-33. β Christensen, Lars Lindberg; Tielens, A.G.G.M.: A stellar cocoon soon to hatch to a butterfly, spacetelescope.org, 31. August 2000. Abgerufen am 6. Mai 2017 (englisch).
cite-note-apj578-44. β Contreras, C. S.; Sahai, R.; Gil de Paz, A.: Physical structure of the protoplanetary nebula CRL618. I. Optical long-slit spectroscopy and imaging. In: Astrophysical Journal. 578. Jahrgang, Nr. 1, Oktober 2002, S. 269β289, doi:10.1086/342316, arxiv:astro-ph/0206200, bibcode:2002ApJ...578..269S (englisch).