Wolf-Rayet stars in the Magellanic clouds. VI: Spectroscopic orbits of WC binaries and implications for W-R evolution
In addition to obtaining spectroscopic orbits for the three largest WC + O binary systems in the LMC, an improved orbit has been determined for the SMC's bright WO + O system. The very short periods noted in two of the LMC binary systems indicate that orbital angular momentum must have been los...
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| Veröffentlicht in: | The Astrophysical journal 1990, Vol.348 (1), p.232-241 |
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| creator | MOFFAT, A. F. J NIEMELA, V. S MARRACO, H. G |
| description | In addition to obtaining spectroscopic orbits for the three largest WC + O binary systems in the LMC, an improved orbit has been determined for the SMC's bright WO + O system. The very short periods noted in two of the LMC binary systems indicate that orbital angular momentum must have been lost from the system, in addition to the momentum associated with the extreme mass loss of the present WC components, although this need not have occurred through mass transfer. A continuous decrease of mass ratio is noted with WC subtype; this implies that WC stars can evolve from WN stars and from cooler to hotter subtypes within the WC sequence. 38 refs. |
| doi_str_mv | 10.1086/168232 |
| format | Article |
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F. J</creatorcontrib><creatorcontrib>NIEMELA, V. S</creatorcontrib><creatorcontrib>MARRACO, H. G</creatorcontrib><title>Wolf-Rayet stars in the Magellanic clouds. VI: Spectroscopic orbits of WC binaries and implications for W-R evolution</title><title>The Astrophysical journal</title><description>In addition to obtaining spectroscopic orbits for the three largest WC + O binary systems in the LMC, an improved orbit has been determined for the SMC's bright WO + O system. The very short periods noted in two of the LMC binary systems indicate that orbital angular momentum must have been lost from the system, in addition to the momentum associated with the extreme mass loss of the present WC components, although this need not have occurred through mass transfer. 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F. J</creatorcontrib><creatorcontrib>NIEMELA, V. S</creatorcontrib><creatorcontrib>MARRACO, H. G</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>The Astrophysical journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>MOFFAT, A. F. J</au><au>NIEMELA, V. S</au><au>MARRACO, H. G</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Wolf-Rayet stars in the Magellanic clouds. VI: Spectroscopic orbits of WC binaries and implications for W-R evolution</atitle><jtitle>The Astrophysical journal</jtitle><date>1990</date><risdate>1990</risdate><volume>348</volume><issue>1</issue><spage>232</spage><epage>241</epage><pages>232-241</pages><issn>0004-637X</issn><eissn>1538-4357</eissn><coden>ASJOAB</coden><abstract>In addition to obtaining spectroscopic orbits for the three largest WC + O binary systems in the LMC, an improved orbit has been determined for the SMC's bright WO + O system. The very short periods noted in two of the LMC binary systems indicate that orbital angular momentum must have been lost from the system, in addition to the momentum associated with the extreme mass loss of the present WC components, although this need not have occurred through mass transfer. 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| ispartof | The Astrophysical journal, 1990, Vol.348 (1), p.232-241 |
| issn | 0004-637X 1538-4357 |
| language | eng |
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| source | Alma/SFX Local Collection |
| subjects | 640102 - Astrophysics & Cosmology- Stars & Quasi-Stellar, Radio & X-Ray Sources ANGULAR MOMENTUM Astronomy BINARY STARS CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS Earth, ocean, space Emission-line stars (of, be, luminous blue variables, wolf-rayet, etc.) Exact sciences and technology GALAXIES MAGELLANIC CLOUDS MAIN SEQUENCE STARS MASS TRANSFER MILKY WAY ORBITS STAR EVOLUTION STARS Variable and peculiar stars (including novae) WOLF-RAYET STARS |
| title | Wolf-Rayet stars in the Magellanic clouds. VI: Spectroscopic orbits of WC binaries and implications for W-R evolution |
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