Discovery of a Pre-Main Sequence Spectroscopic Binary in NGC 2264

Details Discovery of a Pre-Main Sequence Spectroscopic Binary in NGC 2264 Discovery of a Pre-Main Sequence Spectroscopic Binary in NGC 2264

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aas...181.6605p&link_type=abstract

American Astronomical Society, 181st AAS Meeting, #66.05; Bulletin of the American Astronomical Society, Vol. 24, p.1224

Astronomy and Astrophysics

Astronomy

Scientific paper

We report the discovery that the G star W134 in the pre-main sequence cluster NGC 2264 is a double-lined spectroscopic binary. The youth of this system is verified by the presence of Li I 6707 Angstroms in both components, and weak Hα emission in at least one of the stars. Using radial velocity measurements from numerous echelle observations, we have determined the period to be 6.36 days. The components have a large maximum radial velocity separation of 169 km s(-1) , indicating that this system is a possible eclipsing binary. However, no decreases in brightness were detected during our single attempt at photometry during a predicted zero radial velocity separation.

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