2005A&A...429..625D


C.D.S. - SIMBAD4 rel 1.7 - 2021.02.26CET02:30:54

2005A&A...429..625D - Astronomy and Astrophysics, volume 429, 625-629 (2005/1-2)

First spectra of the W UMa system V524 Monocerotis.

DALL T.H. and SCHMIDTOBREICK L.

Abstract (from CDS):

We present the first high-resolution spectra of the WUMa contact binary V524 Mon. The spectra of the two components are very similar, resembling a G5 and a K0. We find the radial velocities and rotational velocities consistent with corotation. We estimate the radii and the masses and derive a mass ratio M2/M1=2.1. We confirm that V524Mon is a W-type contact system, likely enclosed in a common convective envelope, as found by Samec & Loflin (2003IBVS.5404....1S). We do not find evidence for the expected level of emission in the chromospheric CaII H and K lines, neither Hα, indicating that the magnetic activity is much weaker than expected or that other processes are hampering chromospheric emission.

Abstract Copyright:

Journal keyword(s): stars: binaries: symbiotic - stars: binaries: spectroscopic - stars: chromospheres - stars: activity

Simbad objects: 2

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Number of rows : 2

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 V* V524 Mon WU* 06 59 01.1912380994 +02 12 51.490158702           ~ 29 1
2 V* LQ Hya BY* 09 32 25.5684079124 -11 11 04.687410738 9.316 8.761 7.891 7.288 6.815 K1Vp 408 0

    Equat.    Gal    SGal    Ecl

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