V1154 Tau: a New Eclipsing Star within a Triple System

Details V1154 Tau: a New Eclipsing Star within a Triple System V1154 Tau: a New Eclipsing Star within a Triple System

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003ibvs.5413....1d&link_type=abstract

Information Bulletin on Variable Stars, 5413, 1.

Computer Science

1

Photometry

Scientific paper

V1154 Tau has been discovered by Hipparcos as a a low amplitude variable of unsolved nature. We have carried out extensive B,V photometry from Dec 2002 to February 2003 and discovered that V1154 Tau is an eclipsing system with an orbital period of 1.7678805 days. The system is triple with the third component on an extremely wide orbit, 0.355 arcsec away, or 90 AU at the system distance, contributing 21 of the total system light. The orbit of the eclipsing binary is eccentric and the total color difference between primary and secondary eclipse is 0.02 mag in B-V, both being total with flat bottom.

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