Failure of continuum methods for determining the effective temperature of hot stars
It is demonstrated here that, for hot stars, methods based on the integrated continuum flux are completely unreliable discriminators of the effective temperature. Absorption line profiles provide much more accurate values of these parameters. It is not necessary to invoke nonradiative energy and mom...
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| Veröffentlicht in: | The Astrophysical journal 1988-05, Vol.328 (2), p.704-708 |
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| container_end_page | 708 |
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| container_issue | 2 |
| container_start_page | 704 |
| container_title | The Astrophysical journal |
| container_volume | 328 |
| creator | Hummer, D. G. Abbott, David C. Voels, Stephen A. Bohannan, Bruce |
| description | It is demonstrated here that, for hot stars, methods based on the integrated continuum flux are completely unreliable discriminators of the effective temperature. Absorption line profiles provide much more accurate values of these parameters. It is not necessary to invoke nonradiative energy and momentum effects to explain the spectroscopic appearance of O-type stars of very different spectral type; rather, the observed spectra can be well modeled and fully interpreted by normal interaction of gas and radiation in stellar atmospheres of differing effective temperature and gravity. |
| doi_str_mv | 10.1086/166328 |
| format | Article |
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G.</creatorcontrib><creatorcontrib>Abbott, David C.</creatorcontrib><creatorcontrib>Voels, Stephen A.</creatorcontrib><creatorcontrib>Bohannan, Bruce</creatorcontrib><title>Failure of continuum methods for determining the effective temperature of hot stars</title><title>The Astrophysical journal</title><description>It is demonstrated here that, for hot stars, methods based on the integrated continuum flux are completely unreliable discriminators of the effective temperature. Absorption line profiles provide much more accurate values of these parameters. 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G.</au><au>Abbott, David C.</au><au>Voels, Stephen A.</au><au>Bohannan, Bruce</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Failure of continuum methods for determining the effective temperature of hot stars</atitle><jtitle>The Astrophysical journal</jtitle><date>1988-05-15</date><risdate>1988</risdate><volume>328</volume><issue>2</issue><spage>704</spage><epage>708</epage><pages>704-708</pages><issn>0004-637X</issn><eissn>1538-4357</eissn><coden>ASJOAB</coden><abstract>It is demonstrated here that, for hot stars, methods based on the integrated continuum flux are completely unreliable discriminators of the effective temperature. Absorption line profiles provide much more accurate values of these parameters. 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| fulltext | fulltext |
| identifier | ISSN: 0004-637X |
| ispartof | The Astrophysical journal, 1988-05, Vol.328 (2), p.704-708 |
| issn | 0004-637X 1538-4357 |
| language | eng |
| recordid | cdi_crossref_primary_10_1086_166328 |
| source | NASA Technical Reports Server; Alma/SFX Local Collection |
| subjects | Astronomy Astrophysics Earth, ocean, space Exact sciences and technology Luminosities, magnitudes, effective temperatures, color, and spectral classification Stars Stellar characteristics and properties |
| title | Failure of continuum methods for determining the effective temperature of hot stars |
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