Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aj....121.1623h&link_type=abstract
The Astronomical Journal, Volume 121, Issue 3, pp. 1623-1635.
Astronomy and Astrophysics
Astronomy
34
Stars: Binaries: Spectroscopic, Stars: Binaries: Visual, Stars: Fundamental Parameters, Stars: Individual: Constellation Name: Ο Leonis, Techniques: Interferometric
Scientific paper
We present a three-dimensional solution for the orbit of the double star Omicron Leonis, based on new photoelectric radial velocity data mainly from the Observatoire de Haute-Provence and on interferometric data obtained with the Navy Prototype Optical Interferometer, the Mark III Stellar Interferometer, and the Palomar Testbed Interferometer. Omicron Leo's primary is a giant of type F9 and the secondary is an A5m dwarf, for which we derive masses of 2.12+/-0.01 Msolar and 1.87+/-0.01 Msolar, respectively. The distance to the binary is determined to be 41.4+/-0.1 pc. Combining the distance with the measured apparent magnitudes and color differences between the components yields luminosities of 39.4+/-2.4 Lsolar and 15.4+/-1.0 Lsolar for primary and secondary, respectively. Data from the Palomar Testbed Interferometer taken at 2.2 μm are used to constrain the photometry in the infrared.
Boden Andrew F.
Carquillat Jean-Michel
Ginestet Nicole
Griffin Roger F.
Hajian Arsen R.
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