2004AJ....128.1340L -
Astron. J., 128, 1340-1347 (2004/September-0)
Absolute properties of the eclipsing binary star V459 Cassiopeiae.
LACY C.H.S., CLARET A. and SABBY J.A.
Abstract (from CDS):
We present 5064 differential observations in the V filter measured by a robotic telescope, as well as 30 pairs of radial velocities from high-resolution spectroscopic observations, of the detached, EA-type, 8.46 day period double-lined eclipsing binary star V459 Cas. Absolute dimensions of the components are determined with good precision (better than 1.6% in the masses and radii) for the purpose of testing various aspects of theoretical modeling. We obtain 2.02±0.03 M☉and 2.009±0.013 R☉for the hotter, larger, more massive and more luminous photometric primary (star A), and 1.96±0.03 M☉and 1.965±0.013 R☉for the cooler, smaller, less massive and less luminous photometric secondary (star B). The effective temperatures and interstellar reddening of the stars are accurately determined from uvbyβ photometry: 9140±300 K for the primary, 9100±300 K for the secondary–corresponding to spectral types of A1–and 0.186 mag for E_b-y_. The orbits are eccentric, and spectral line widths give observed rotational velocities that are much faster than synchronous for both components. The components of V459 Cas are main-sequence stars with an age of about 525 Myr according to models.
Abstract Copyright:
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Journal keyword(s):
Stars: Binaries: Eclipsing - Stars: Binaries: Spectroscopic - Stars: Evolution - Stars: Fundamental Parameters - stars: individual (V459 Cassiopeiae)
VizieR on-line data:
<Available at CDS (J/AJ/128/1340): table5.dat>
Simbad objects:
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