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Spectroscopy of V471 Tau. I - Review of basic properties
Spectroscopic observations of the eclipsing binary V471 Tau are reportedand analyzed. Data obtained mainly in the red band at Mt. WilsonObservatory and KPNO during the period 1975-1983 are compiled inextensive tables and graphs, and the radial velocity of the K dwarfcomponent is determined using a Griffin-mask technique. Resultsdiscussed include: (1) distance 44 + or - 6 pc, (consistent withmembership in the Hyades), (2) apparent period variation consistent witha third component, (3) emissionlike features affecting theradial-velocity determination, (4) transient features consistent withthe presence of flares, and (5) phase-coherent variation in H-alpha(attributed to the action of the white-dwarf Lyman continuum emission onthe K dwarf).
| Discovery of two FK COM stars in the southern hemisphere.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1982MNRAS.200..489C&db_key=AST
| Variability of HR 904 and HR 8421
Not Available
| Photoelectric radial velocities. V. 69 southern HR stars.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1972MNRAS.155..449G&db_key=AST
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Osservazione e dati astrometrici
| Costellazione: | Balena |
| Ascensione retta: | 01h43m54.80s |
| Declinazione: | -04°45'56.0" |
| Magnitudine apparente: | 6.19 |
| Distanza: | 219.78 parsec |
| Moto proprio RA: | -24.5 |
| Moto proprio Dec: | -31.7 |
| B-T magnitude: | 8.216 |
| V-T magnitude: | 6.374 |
Cataloghi e designazioni:
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