2003A&A...403..637C


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.21CEST18:29:57

2003A&A...403..637C - Astronomy and Astrophysics, volume 403, 637-643 (2003/5-4)

Photometric study of the over-contact binary star GSC 3822-1056.

CSIZMADIA S., BIRO I.B. and BORKOVITS T.

Abstract (from CDS):

Here we present the first Johnson-Cousins VRC light curves of the over-contact binary star GSC 3822-1056. A period study and the light curve solution are also given. An extremely high rate of period increase (+11.6s/century) was found. The origin of this period change can be: (i) partly covered light-time effect due to the orbital motion around the mass center of a possible third body; (ii) mass transfer between the components. The light curve was solved using the 1998 Wilson-Devinney Code. We examined the light curve with and without third light. Both solutions yielded a contact configuration with high temperature difference between the components. Despite the high degree of the contact (f=0.57), the temperature difference between the components ΔT=Tprimary-Tsecondary=1045K. The high mass ratio of the system and its other unusual properties suggest that GSC 3822-1056 may be a recently formed contact binary.

Abstract Copyright:

Journal keyword(s): techniques: photometric - stars: binaries: eclipsing - stars: binaries: close - stars: individual: GSC 3822-1056

VizieR on-line data: <Available at CDS (J/A+A/403/637): table2a.dat table2b.dat table2c.dat>

Simbad objects: 10

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Number of rows : 10

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 GSC 03822-00070 * 10 33 48.7920553631 +58 52 30.837363096   13.92 13.29     ~ 8 0
2 V* DW UMa CV* 10 33 52.8751166936 +58 46 54.719916520   14.33   14.33 14.35 ~ 217 0
3 V* LP UMa EB* 10 33 57.7932382682 +58 52 15.553309071           ~ 33 1
4 V* UZ Leo EB* 10 40 33.1851453182 +13 34 00.856206822   10.13 9.75     F2 129 0
5 V* AC Vel EB* 10 46 18.3781838907 -56 49 45.818051053   9.04 9.00     B3III/V 23 0
6 V* XY Boo EB* 13 49 11.5668982802 +20 11 24.591106089   10.71 10.54     F5V 139 0
7 V* V839 Oph EB* 18 09 21.2653297696 +09 09 03.605427060   9.62 9.03   8.286 F8V 134 0
8 LF 2 +28 153 EB* 19 35 53.1935975899 +28 16 44.265765596   9.72 9.57     A0 43 0
9 V* VZ Psc EB* 23 27 48.3882787476 +04 51 23.935673863   11.39 10.274 10.090 8.926 K4/5V 103 0
10 V* DI Peg EB* 23 32 14.6735672777 +14 58 08.750442842   10.00 9.513     F0IVn 139 0

    Equat.    Gal    SGal    Ecl

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