The radial velocities and physical parameters of HD 553

Details The radial velocities and physical parameters of HD 553 The radial velocities and physical parameters of HD 553

2002-10-15

arxiv.org/abs/astro-ph/0210335v1

Astron.Astrophys. 395 (2002) 885-890

Astronomy and Astrophysics

Astrophysics

6 pages, 3 Postscript figures, accepted in Astronomy and Astrophysics

Scientific paper

10.1051/0004-6361:20021316

HD 553 was discovered as an eclipsing binary by Hipparcos. Here, we present the first radial velocity curve for this system. It is found that HD 553 is a double-lined spectroscopic binary. Despite the large luminosity difference, the two components of the system are of very simmilar mass. The primary, a K0-giant, fills a large fraction of its Roche-lobe. The secondary is, despite its very similar mass, still a late-type dwarf. The radial velocity curve allows to constrain several stellar and system parameters.

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