Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...219..142a&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 219, no. 1-2, July 1989, p. 142-150. Research supported by the Danish Board fo
Astronomy and Astrophysics
Astrophysics
42
Binary Stars, Pre-Main Sequence Stars, Star Formation, Variable Stars, Cosmic Dust, Radial Velocity, Stellar Envelopes, Stellar Magnitude, Stellar Orbits
Scientific paper
The present study establishes AK Sco to be a double-lined, comparatively bright, short-period member of the small group of premain sequence spectroscopic binaries with orbit determinations. The observed spectral type, orbital data, and rotational velocities of the components are used to construct a consistent system model according to which AK Sco is located at a distance of about 200 pc and consists of two F5 stars slightly above main sequence. The main photometric variability of this binary is ascribed to dust obscuration rather than star-spot activity; the cool dust component is found to have a distance from AK Sco of about 10 AU, comparable to the orbital radius of Saturn.
Andersen Jeppe J.
Hazen Martha L.
Lindgren Harri
Mayor Marcel
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