Short-period noncontact close binary systems. II. GR Tauri.
Abstract
The close binary system GR Tau is discussed on the basis of B, V photoelectric and spectroscopic observations. The spectral type is classified to be A5 V and the previous orbital period is revised to P = 0.4298525 d. The observed light curves reveal that GR Tau is a totally eclipsing system with a photometric asymmetry. From the analysis of the light curves it is found that both components are inside their critical Roche lobes but that the primary component is nearly filling the lobe. From the obtained radial velocity curve, the orbital elements are deduced. Discussions are made of physical properties of the components and attention is called to the significance of the peculiar asymmetric feature of the light curve of this noncontact system.
- Publication:
-
Publications of the Astronomical Society of Japan
- Pub Date:
- 1984
- Bibcode:
- 1984PASJ...36..175Y
- Keywords:
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- Eclipsing Binary Stars;
- Light Curve;
- Stellar Spectrophotometry;
- Stellar Temperature;
- Dwarf Stars;
- H Lines;
- Main Sequence Stars;
- Stellar Mass Ejection;
- Taurus Constellation;
- Variable Stars;
- Astronomy