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- W2045953296 abstract "view Abstract Citations (396) References (53) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Infrared photometry and mass loss rates for OBA supergiants and Of stars. Barlow, M. J. ; Cohen, M. Abstract We present infrared observations of 34 OBA supergiants and 10 Of and Oe stars. Excess free- free emission is detectable at 10 m but not at shorter wavelengths for the supergiants. From our 2.2 and 3.6 t m photometry of the supergiants, in conjunction with existing UBV data, we derive an invariant ratio of total to selective extinction, R = 3.10 + 0.03. Using published radio and infrared data, we derive the velocity law for the mass loss outflow from P Cygni, and we apply this velocity law to the measured 10 m excess fluxes from our sample of supergiants in order to derive mass loss rates. Our preliminary survey of Of and Oe stars shows excess free-free emission to be common at 3.6 m and sometimes detectable at 2.2 t m. Using our 2.2-10 m data, we derive mass loss rates for several 0 stars. Our results are consistent with radiation pressure being the driving mechanism for mass loss from OBA supergiants and Of stars. Subject headings: interstellar: matter - stars: circumstellar shells - stars: early-type - stars: mass loss - stars: Of-type - stars: supergiants Publication: The Astrophysical Journal Pub Date: May 1977 DOI: 10.1086/155204 Bibcode: 1977ApJ...213..737B Keywords: Infrared Astronomy; Infrared Photometry; O Stars; Stellar Mass Ejection; Stellar Spectrophotometry; Supergiant Stars; A Stars; B Stars; Black Body Radiation; Early Stars; Interstellar Extinction; Mass Flow; Ubv Spectra; Astrophysics full text sources ADS | data products SIMBAD (45) GCPD (1)" @default.
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- W2045953296 title "Infrared photometry and mass loss rates for OBA supergiants and Of stars" @default.
- W2045953296 doi "https://doi.org/10.1086/155204" @default.
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