Spectroscopy of V471 Tau. I. Review of basic properties

Journal Article · Fri Jul 01 04:00:00 EDT 1988 · Astron. J.; (United States)

DOI:https://doi.org/10.1086/114799· OSTI ID:6921233

Bois, B; Mochnacki, S W; Lanning, H H

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), Journal Name: Astron. J.; (United States) Vol. 96; ISSN ANJOA
• 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
BALMER LINES
BINARY STARS
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
DWARF STARS
ECLIPSE
RADIAL VELOCITY
SPECTROSCOPY
STARS
STELLAR ACTIVITY
STELLAR FLARES
VARIABLE STARS
VARIATIONS
VELOCITY
WHITE DWARF STARS