The first photometric investigation and orbital period variation analysis of the W UMa type binary IK Bootis

© The Author 2017. Published by Oxford University Press on behalf of the Astronomical Society of Japan. All rights reserved. With new CCD observations of the W UMa type binary IK Boo, we present the first investigation of photometric parameters and orbital period change. The BVRclight curve fit show...

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Main Authors: Wichean Kriwattanawong, Nuanwan Sanguansak, Sakdawoot Maungkorn
Format: Journal
Published: 2018
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/57228
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-572282018-09-05T03:54:01Z The first photometric investigation and orbital period variation analysis of the W UMa type binary IK Bootis Wichean Kriwattanawong Nuanwan Sanguansak Sakdawoot Maungkorn Earth and Planetary Sciences Physics and Astronomy © The Author 2017. Published by Oxford University Press on behalf of the Astronomical Society of Japan. All rights reserved. With new CCD observations of the W UMa type binary IK Boo, we present the first investigation of photometric parameters and orbital period change. The BVRclight curve fit shows that IK Boo is a W-type contact system with a mass ratio of q = 1.146 and a shallow contact with a fill-out factor of f = 2.22%. The orbital period decrease was found to be a rate of −3.28 × 10−7d yr−1, corresponding to a mass transfer from the more massive to the less massive component with a rate of −2.83 × 10−6M yr−1. The inner and outer critical Roche lobes will contract and cause the contact degree to increase. Therefore, IK Boo may evolve into a deeper contact system. Furthermore, a possible cyclic variation was found with a period of 9.74 yr, which could be explained by the light-travel time effect due to the existence of a third companion in the system. 2018-09-05T03:36:46Z 2018-09-05T03:36:46Z 2017-01-01 Journal 2053051X 00046264 2-s2.0-85031908607 10.1093/pasj/psx038 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85031908607&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/57228
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Earth and Planetary Sciences
Physics and Astronomy
spellingShingle Earth and Planetary Sciences
Physics and Astronomy
Wichean Kriwattanawong
Nuanwan Sanguansak
Sakdawoot Maungkorn
The first photometric investigation and orbital period variation analysis of the W UMa type binary IK Bootis
description © The Author 2017. Published by Oxford University Press on behalf of the Astronomical Society of Japan. All rights reserved. With new CCD observations of the W UMa type binary IK Boo, we present the first investigation of photometric parameters and orbital period change. The BVRclight curve fit shows that IK Boo is a W-type contact system with a mass ratio of q = 1.146 and a shallow contact with a fill-out factor of f = 2.22%. The orbital period decrease was found to be a rate of −3.28 × 10−7d yr−1, corresponding to a mass transfer from the more massive to the less massive component with a rate of −2.83 × 10−6M yr−1. The inner and outer critical Roche lobes will contract and cause the contact degree to increase. Therefore, IK Boo may evolve into a deeper contact system. Furthermore, a possible cyclic variation was found with a period of 9.74 yr, which could be explained by the light-travel time effect due to the existence of a third companion in the system.
format Journal
author Wichean Kriwattanawong
Nuanwan Sanguansak
Sakdawoot Maungkorn
author_facet Wichean Kriwattanawong
Nuanwan Sanguansak
Sakdawoot Maungkorn
author_sort Wichean Kriwattanawong
title The first photometric investigation and orbital period variation analysis of the W UMa type binary IK Bootis
title_short The first photometric investigation and orbital period variation analysis of the W UMa type binary IK Bootis
title_full The first photometric investigation and orbital period variation analysis of the W UMa type binary IK Bootis
title_fullStr The first photometric investigation and orbital period variation analysis of the W UMa type binary IK Bootis
title_full_unstemmed The first photometric investigation and orbital period variation analysis of the W UMa type binary IK Bootis
title_sort first photometric investigation and orbital period variation analysis of the w uma type binary ik bootis
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85031908607&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/57228
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