Cross-correlation radial velocity measurements of chromospherically active binaries.

Details Cross-correlation radial velocity measurements of chromospherically active binaries. Cross-correlation radial velocity measurements of chromospherically active binaries.

Jan 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...305..146g&link_type=abstract

Astronomy and Astrophysics, v.305, p.146

Astronomy and Astrophysics

Astrophysics

20

Stars: Binaries: Close, Stars: Binaries: Spectroscopic, Stars: Activity, Techniques: Radial Velocities

Scientific paper

We present observational radial velocity curves for 12 chromospherically active binary systems and individual measurements for a further 5 systems. These binaries are LX Per, V 471 Tau, EI Eri, OU Gem, GK Hya, TY Pyx, Z Her, MM Her, V772 Her, ER Vul, BD-004234, MY Cyg, AR Lac, KZ And, RT And, SZ Psc and EZ Peg. Six of our target binaries do not agree with published ephemerides or orbital parameters. We also present a rigorous derivation of the resolution limit for binary star cross-correlation radial velocities. Using synthetic spectral data we investigate the errors induced by rotational broadening, signal-to-noise ratio, spectral-type mismatch and luminosity ratio.

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