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Title: First photometric study of the very short period K-type contact binary 1SWASP J064501.21+342154.9

Abstract

The first high precision CCD photometric light curves of 1SWASP J064501.21+342154.9 were obtained in 2013 February along with several new times of minimum light. The multi-color light curves were analyzed using the Wilson-Devinney code. Photometric solutions reveal that the system is a W-type shallow contact binary with a mass ratio of q = 2.110 ± 0.007 and a degree of contact of f = 15.3% ± 2.1%. A third light contributing about 2% of the total luminosity in the I band was found. It may come from a cool tertiary component. A small spot found on the surface of the binary indicates that the solar-like activities are at a low level at present.

Authors:
; ; ; ; ; ;  [1];  [2]
  1. Yunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, Kunming 650011 (China)
  2. National Astronomical Research Institute of Thailand/Ministry of Science and Technology, Bangkok (Thailand)
Publication Date:
OSTI Identifier:
22340010
Resource Type:
Journal Article
Journal Name:
Astronomical Journal (New York, N.Y. Online)
Additional Journal Information:
Journal Volume: 147; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1538-3881
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ACCURACY; CHARGE-COUPLED DEVICES; COLOR; DIAGRAMS; ECLIPSE; LUMINOSITY; MASS; MATHEMATICAL SOLUTIONS; STAR EVOLUTION; STARS; SURFACES; VISIBLE RADIATION

Citation Formats

Liu, N. -P., Qian, S. -B., Liao, W. -P., Zhu, L. -Y., He, J. -J., Liu, L., Zhao, E. -G., Soonthornthum, B., and Leung, K.-C., E-mail: lnp@ynao.ac.cn. First photometric study of the very short period K-type contact binary 1SWASP J064501.21+342154.9. United States: N. p., 2014. Web. doi:10.1088/0004-6256/147/2/41.
Liu, N. -P., Qian, S. -B., Liao, W. -P., Zhu, L. -Y., He, J. -J., Liu, L., Zhao, E. -G., Soonthornthum, B., & Leung, K.-C., E-mail: lnp@ynao.ac.cn. First photometric study of the very short period K-type contact binary 1SWASP J064501.21+342154.9. United States. https://doi.org/10.1088/0004-6256/147/2/41
Liu, N. -P., Qian, S. -B., Liao, W. -P., Zhu, L. -Y., He, J. -J., Liu, L., Zhao, E. -G., Soonthornthum, B., and Leung, K.-C., E-mail: lnp@ynao.ac.cn. 2014. "First photometric study of the very short period K-type contact binary 1SWASP J064501.21+342154.9". United States. https://doi.org/10.1088/0004-6256/147/2/41.
@article{osti_22340010,
title = {First photometric study of the very short period K-type contact binary 1SWASP J064501.21+342154.9},
author = {Liu, N. -P. and Qian, S. -B. and Liao, W. -P. and Zhu, L. -Y. and He, J. -J. and Liu, L. and Zhao, E. -G. and Soonthornthum, B. and Leung, K.-C., E-mail: lnp@ynao.ac.cn},
abstractNote = {The first high precision CCD photometric light curves of 1SWASP J064501.21+342154.9 were obtained in 2013 February along with several new times of minimum light. The multi-color light curves were analyzed using the Wilson-Devinney code. Photometric solutions reveal that the system is a W-type shallow contact binary with a mass ratio of q = 2.110 ± 0.007 and a degree of contact of f = 15.3% ± 2.1%. A third light contributing about 2% of the total luminosity in the I band was found. It may come from a cool tertiary component. A small spot found on the surface of the binary indicates that the solar-like activities are at a low level at present.},
doi = {10.1088/0004-6256/147/2/41},
url = {https://www.osti.gov/biblio/22340010}, journal = {Astronomical Journal (New York, N.Y. Online)},
issn = {1538-3881},
number = 2,
volume = 147,
place = {United States},
year = {Sat Feb 01 00:00:00 EST 2014},
month = {Sat Feb 01 00:00:00 EST 2014}
}