2011A&A...525A..66D


Query : 2011A&A...525A..66D

2011A&A...525A..66D - Astronomy and Astrophysics, volume 525A, 66-66 (2011/1-1)

Physical parameters of close binaries QX Andromedae, RW Comae Berenices, MR Delphini, and BD +07o 3142.

DJURASEVIC G., YILMAZ M., BASTURK O., KILICOGLU T., LATKOVIC O. and CALISKAN S.

Abstract (from CDS):

We analyze new multicolor light curves and recently published radial velocity curves for close binaries QX And, RW Com, MR Del, and BD +07° 3142 to determine the physical parameters of the components. The light curves are analyzed using a binary star model based on Roche geometry to fit the photometric observations. Spectroscopic parameters, such as the mass ratios and spectral types, were taken from recent spectroscopic studies of the systems in question. Our findings provide consistent and reliable sets of stellar parameters for the four studied binary systems. Of particular interest is the BD +07° 3142 system, since this is the first analysis of its light curves. We find that it is an overcontact binary of W UMa type and W subtype, and that each component has a large cool spot in the polar region. QX And is an A subtype, and RW Com a W subtype W UMa binary, and in both systems we find a bright spot in the neck region between the components. MR Del is a detached binary with a complex light curve that we could model with two cool spots on the hotter component.

Abstract Copyright:

Journal keyword(s): binaries: eclipsing - stars: fundamental parameters - stars: individual: QX Andromedae - stars: individual: RW Comae Berenices - stars: individual: MR Delphini - stars: individual: BD +07 3142

VizieR on-line data: <Available at CDS (J/A+A/525/A66): bd.dat mrdel.dat qxand.dat rwcom.dat>

Simbad objects: 12

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Number of rows : 12
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 NGC 752 197 * 01 57 31.8434840098 +37 53 40.687385096   12.03 11.58 11.53   F3 27 0
2 NGC 752 OpC 01 57 41 +37 47.1           ~ 567 0
3 NGC 752 222 * 01 57 47.1334391467 +37 47 30.303970437   11.2 10.9     F3.4 26 0
4 V* QX And EB* 01 57 57.7817802186 +37 48 22.450045733   11.91 11.43 11.23   F5 101 0
5 V* RW Com EB* 12 33 00.2841958714 +26 42 58.362399221   12.33 11.682 10.929   G8e 150 0
6 Cl* Melotte 111 AV 2136 PM* 12 33 03.9474256942 +26 37 25.941575947           ~ 2 0
7 BD+07 3142 EB* 16 20 03.2131031646 +07 07 28.690543693   10.85 9.870 9.711 8.820 G9V 20 0
8 HD 147188 * 16 20 09.2232831256 +07 03 54.586261237   9.61 9.18     F8 4 0
9 TYC 380-429-1 * 16 20 12.8247412792 +07 11 16.925907259   12.01 10.63     ~ 2 0
10 HD 195434 EB* 20 31 13.46402 +05 13 08.5147   9.61 9.20 8.85 7.736 K0V 65 0
11 BD+04 4471 * 20 31 23.5300506046 +05 18 03.090796450   10.31 9.65     F2 2 0
12 TYC 518-13-1 * 20 31 24.1846847773 +05 12 50.080534286   10.45 9.87     ~ 1 0

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2021.09.26-00:49:21

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