Infrared photometry and mass loss rates for Of-type stars

Abstract

view Abstract Citations (27) References (31) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Infrared photometry and mass loss rates for OF-type stars. Persi, P. ; Ferrari-Toniolo, M. ; Grasdalen, G. L. Abstract The Of-type stars represent an interesting class of luminous O-type stars characterized by emission in N III lambda 4640. Castor et al. (1975) proposed a model in which the wind from Of stars is driven by the force of radiation absorbed in a large number of spectral lines. In this connection, accurate determinations of mass loss rates are very important in understanding the physical processes in the winds of Of-type stars and in studying their evolution. The present investigation reports additional mass loss rates derived from accurate IR photometry from 2.3 microns up to 10 microns of 15 Of-type stars. The considered IR observations suggest that a unique model cannot explain the wind's properties in Of-type stars. While the radiation-driven wind model may be applied for some Of-type stars, the observed high wind momentum in other stars, especially in Of stars, requires an additional or different mechanism to drive the wind as proposed for WR stars. Publication: The Astrophysical Journal Pub Date: June 1983 DOI: 10.1086/161069 Bibcode: 1983ApJ...269..625P Keywords: Infrared Astronomy; Infrared Photometry; Mass Flow Rate; O Stars; Stellar Mass Ejection; Stellar Spectrophotometry; Astronomical Catalogs; Binary Stars; Stellar Luminosity; Stellar Models; Astrophysics full text sources ADS | data products SIMBAD (17)