Radial velocity measurements of the chromospherically-active stars. I - BD + 25 deg 2511

Details Radial velocity measurements of the chromospherically-active stars. I - BD + 25 deg 2511 Radial velocity measurements of the chromospherically-active stars. I - BD + 25 deg 2511

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ap%26ss.200..195d&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 200, no. 2, p. 195-199.

Astronomy and Astrophysics

Astrophysics

1

Binary Stars, Chromosphere, Radial Velocity, Stellar Activity, Stellar Rotation, Eccentricity, Stellar Orbits, Stellar Spectrophotometry

Scientific paper

This paper is the first of a series on radial velocities measures of the chromospherically-active and suspected stars. The chromospherically-active star BD + 25 deg 2511 = HZ Com is found to be double-lined spectroscopic binary with an orbital period of 3.558317 days and an eccentricity of 0.013 +/- 0.006. The orbital period does not differ substantially from the previously determined photometric period. If the photometric period is correct, this system is rotating synchronously and imposes important constraints on theories of synchronization and circularization of binary systems.

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