Survey of soft X-ray emission from hot stars

Journal Article · Tue Jul 15 04:00:00 EDT 1980 · Astrophys. J., Lett. Ed.; (United States)

DOI:https://doi.org/10.1086/183293· OSTI ID:6782843

Long, K S; White, R L

Sixteen O and B stars were observed with the Einstein X-ray observatory; X-ray emission from all seven O stars and four of the B stars was discovered. The 0.15--4.5 keV luminosities range from approx.10/sup 28/ to approx.2 x 10/sup 32/ ergs s/sup -1/ and constitute 10/sup -6/--10/sup -8/ of the total luminosities of the stars detected. Most of the photons emerge at energies less than 1 keV, in contradiction to the prediction made by Cassinelli and Olson based on a hot corona-cool wind model.

• Research Organization: Columbia Astrophysics Laboratory, Columbia University
• OSTI ID: 6782843
• Journal Information: Astrophys. J., Lett. Ed.; (United States), Journal Name: Astrophys. J., Lett. Ed.; (United States) Vol. 239:2; ISSN AJLEA
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
ELECTROMAGNETIC RADIATION
EMISSION
EMISSION SPECTRA
IONIZING RADIATIONS
LUMINOSITY
MAIN SEQUENCE STARS
MATHEMATICAL MODELS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
PLASMA
RADIATIONS
SOFT X RADIATION
SPECTRA
STAR MODELS
STARS
STELLAR WINDS
X RADIATION
X-RAY SPECTRA