New Photometric Investigation of the Solar-Type Shallow-Contact Binary HH Bootis
Joint Authors
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-18, 18 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-02-06
Country of Publication
Egypt
No. of Pages
18
Main Subjects
Abstract EN
The short-period solar-type contact binary HH Boo was monitored photometrically for about 8 years.
It is found that the CCD light curves in the B, V, R, and I bands obtained in 2010 are symmetric, while the multicolor light curves observed in 2011 and 2012 by several investigators showed a positive O’Connell effect where the maxima following the primary minima are higher than the other ones.
This indicates that the light curve of the solar-type contact binary is variable.
By analyzing our multicolor light curves with the Wilson-Devinney code (W-D code), it is confirmed that HH Boo is a W-type shallow-contact binary system with a mass ratio of q = 1.703(31) and a degree of contact factor of f = 12.86%(0.73%).
By including 109 new determined times of light minimum together with those compiled from the literature, it is detected that the O-C diagram shows a cyclic oscillation with a period of T3 = 6.58(11) yr and an amplitude of A3 = 0.0018(1) d.
The cyclic change may reveal the presence of an extremely cool third body orbiting the central binary.
American Psychological Association (APA)
He, Jia-jia& Wang, Jing-jing. 2019. New Photometric Investigation of the Solar-Type Shallow-Contact Binary HH Bootis. Advances in Astronomy،Vol. 2019, no. 2019, pp.1-18.
https://search.emarefa.net/detail/BIM-1114417
Modern Language Association (MLA)
He, Jia-jia& Wang, Jing-jing. New Photometric Investigation of the Solar-Type Shallow-Contact Binary HH Bootis. Advances in Astronomy No. 2019 (2019), pp.1-18.
https://search.emarefa.net/detail/BIM-1114417
American Medical Association (AMA)
He, Jia-jia& Wang, Jing-jing. New Photometric Investigation of the Solar-Type Shallow-Contact Binary HH Bootis. Advances in Astronomy. 2019. Vol. 2019, no. 2019, pp.1-18.
https://search.emarefa.net/detail/BIM-1114417
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1114417