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

Sz Csizmadia, I. B. Bíró, T. Borkovits

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

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 (+11.6 s/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 = 1045 K. The high mass ratio of the system and its other unusual properties suggest that GSC 3822-1056 may be a recently formed contact binary.

Original languageEnglish
Pages (from-to)637-643
Number of pages7
JournalAstronomy and Astrophysics
Volume403
Issue number2
Publication statusPublished - May 2003

Fingerprint

binary stars
light curve
temperature gradients
mass ratios
mass transfer
center of mass
orbits
configurations
temperature

Keywords

  • Stars: binaries: close
  • Stars: binaries: eclipsing
  • Stars: individual: GSC 3822-1056
  • Techniques: photometric

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Photometric study of the over-contact binary star GSC 3822-1056. / Csizmadia, Sz; Bíró, I. B.; Borkovits, T.

In: Astronomy and Astrophysics, Vol. 403, No. 2, 05.2003, p. 637-643.

Research output: Contribution to journalArticle

Csizmadia, Sz ; Bíró, I. B. ; Borkovits, T. / Photometric study of the over-contact binary star GSC 3822-1056. In: Astronomy and Astrophysics. 2003 ; Vol. 403, No. 2. pp. 637-643.
@article{2b047125cb7b4bb081a875cba072e609,
title = "Photometric study of the over-contact binary star GSC 3822-1056",
abstract = "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 (+11.6 s/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 = 1045 K. The high mass ratio of the system and its other unusual properties suggest that GSC 3822-1056 may be a recently formed contact binary.",
keywords = "Stars: binaries: close, Stars: binaries: eclipsing, Stars: individual: GSC 3822-1056, Techniques: photometric",
author = "Sz Csizmadia and B{\'i}r{\'o}, {I. B.} and T. Borkovits",
year = "2003",
month = "5",
language = "English",
volume = "403",
pages = "637--643",
journal = "Astronomy and Astrophysics",
issn = "0004-6361",
publisher = "EDP Sciences",
number = "2",

}

TY - JOUR

T1 - Photometric study of the over-contact binary star GSC 3822-1056

AU - Csizmadia, Sz

AU - Bíró, I. B.

AU - Borkovits, T.

PY - 2003/5

Y1 - 2003/5

N2 - 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 (+11.6 s/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 = 1045 K. The high mass ratio of the system and its other unusual properties suggest that GSC 3822-1056 may be a recently formed contact binary.

AB - 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 (+11.6 s/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 = 1045 K. The high mass ratio of the system and its other unusual properties suggest that GSC 3822-1056 may be a recently formed contact binary.

KW - Stars: binaries: close

KW - Stars: binaries: eclipsing

KW - Stars: individual: GSC 3822-1056

KW - Techniques: photometric

UR - http://www.scopus.com/inward/record.url?scp=0037986762&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037986762&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0037986762

VL - 403

SP - 637

EP - 643

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

SN - 0004-6361

IS - 2

ER -