Photometric elements of the eclipsing binary HU Tau

Details Photometric elements of the eclipsing binary HU Tau Photometric elements of the eclipsing binary HU Tau

Apr 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a....97..410g&link_type=abstract

Astronomy and Astrophysics, vol. 97, no. 2, Apr. 1981, p. 410, 411.

Astronomy and Astrophysics

Astrophysics

4

Eclipsing Binary Stars, Light Curve, Stellar Spectrophotometry, Dwarf Stars, Mass Ratios, Stellar Luminosity

Scientific paper

By the use of the model of Wood (1972), the V and B photoelectric lightcurves - as yet unsolved - of the single-lined spectrum eclipsing binary HU Tau have been analyzed. The B8V primary star turns out to be considerably larger and brighter than its cooler (K-type) companion. For plausible values of the mass ratio (approximately 0.3), both components are geometrically detached from their Roche lobes. Estimates of the absolute elements of HU Tau, based on an assumed primary mass of around 4 solar masses, reveal that the primary is a dwarf, whereas the secondary is distinctly oversized and overluminous for its spectral type. Then HU Tau cannot be a simple main sequence detached system; it may be an sd-d system.

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