SIMBAD references

2015AJ....150..154T - Astron. J., 150, 154 (2015/November-0)

Absolute dimensions of the metallic-line eclipsing binary V501 Monocerotis.

TORRES G., LACY C.H.S., PAVLOVSKI K., FEKEL F.C. and MUTERSPAUGH M.W.

Abstract (from CDS):

We report extensive high-resolution spectroscopic observations and V-band differential photometry of the slightly eccentric 7.02 day detached eclipsing binary V501 Mon (A6m+F0), which we use to determine its absolute dimensions to high precision (0.3% for the masses and 1.8% for the radii, or better). The absolute masses, radii, and temperatures are MA= 1.6455±0.0043 M, RA= 1.888±0.029 R, and TeffA = 7510±100 K for the primary and MB= 1.4588±0.0025 M, RB= 1.592±0.028 R, and TeffB = 7000±90 K for the secondary. Apsidal motion has been detected, to which General Relativity contributes approximately 70%. The primary star is found to be a metallic-line A star. A detailed chemical analysis of the disentangled spectra yields abundances for more than a dozen elements in each star. Based on the secondary, the system metallicity is near solar: [Fe/H] = +0.01±0.06. Lithium is detected in the secondary but not in the primary. A comparison with current stellar evolution models shows a good match to the measured properties at an age of about 1.1 Gyr.

Abstract Copyright:

Journal keyword(s): binaries: eclipsing - stars: evolution - stars: fundamental parameters - stars: individual: V501 Mon - techniques: photometric - techniques: spectroscopic

VizieR on-line data: <Available at CDS (J/AJ/150/154): table1.dat table2.dat table3.dat table5.dat table7.dat>

Simbad objects: 9

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