Spectroscopy of V471 Tau. I. Review of basic properties
Spectroscopic observations of the eclipsing binary V471 Tau are reported and analyzed. Data obtained mainly in the red band at Mt. Wilson Observatory and KPNO during the period 1975-1983 are compiled in extensive tables and graphs, and the radial velocity of the K dwarf component is determined using a Griffin-mask technique. Results discussed include: (1) distance 44 + or - 6 pc, (consistent with membership in the Hyades), (2) apparent period variation consistent with a third component, (3) emissionlike features affecting the radial-velocity determination, (4) transient features consistent with the presence of flares, and (5) phase-coherent variation in H-alpha (attributed to the action of the white-dwarf Lyman continuum emission on the K dwarf). 70 references.
- Research Organization:
- David Dunlap Laboratory, Richmond Hill (Canada); Mount Wilson and Las Campanas Observatories, Pasadena, CA (USA)
- OSTI ID:
- 6921233
- Journal Information:
- Astron. J.; (United States), Vol. 96
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GENERAL PHYSICS
BINARY STARS
SPECTROSCOPY
BALMER LINES
COSMIC X-RAY SOURCES
ECLIPSE
RADIAL VELOCITY
STELLAR FLARES
VARIABLE STARS
VARIATIONS
WHITE DWARF STARS
COSMIC RAY SOURCES
DWARF STARS
STARS
STELLAR ACTIVITY
VELOCITY
640102* - Astrophysics & Cosmology- Stars & Quasi-Stellar
Radio & X-Ray Sources