Observations of b-type supergiants

Technical Report · Fri Jan 01 04:00:00 EST 1982

OSTI ID:6512664

Methods are presented for determining the effective temperatures, radii and bolometric corrections for B-type supergiants. Absorption lines from hydrogen and from other elements, the H alpha, Balmer progression, and evidence for outflow from the invisible spectrum of these supergiants are considered. Luminosity effects, outflow velocities, and variability in the UV spectrum at high resolution are examined as well as the infrared and radio spectra. Spectroscopic characteristics of the peculiar supergiant P Cyg and superluminous supergiants, X-ray binaries, the properties of the photosphere and mantle and mass loss are elaborated. A general model for the mantle of B stars is included and the properties of B type stars in the main sequence are compared with those of the B-type supergiants.

• Research Organization: National Aeronautics and Space Administration, Washington, DC (USA)
• OSTI ID: 6512664
• Report Number(s): N-82-25031
• 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
ABSORPTION SPECTRA
GIANT STARS
INFRARED SPECTRA
LUMINOSITY
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
SPECTRA
STARS
SUPERGIANT STARS
TEMPERATURE MEASUREMENT
ULTRAVIOLET SPECTRA
VISIBLE SPECTRA
X-RAY SPECTRA