The first eclipsing binary catalogue from the MOA-II data base
journal contribution
posted on 2019-09-24, 16:28 authored by MCA Li, NJ Rattenbury, IA Bond, T Sumi, DP Bennett, N Koshimoto, F Abe, Y Asakura, R Barry, A Bhattacharya, M Donachie, P Evans, M Freeman, A Fukui, Y Hirao, Y Itow, CH Ling, K Masuda, Y Matsubara, Y Muraki, M Nagakane, K Ohnishi, T Saito, A Sharan, DJ Sullivan, D Suzuki, PJ Tristram, A YoneharaWe present the first catalogue of eclipsing binaries in twoMOA (Microlensing Observations in Astrophysics) fields towards the Galactic bulge, in which over 8000 candidates,mostly contact and semidetached binaries of periods < 1 d, were identified. In this paper, the light curves of a small number of interesting candidates, including eccentric binaries, binaries with noteworthy phase modulations and eclipsing RS Canum Venaticorum type stars, are shown as examples. In addition, we identified three triple object candidates by detecting the light-travel-time effect in their eclipse time variation curves.
Funding
MCAL acknowledges the contribution of NeSI high-performance computing facilities to the results of this research. NZ's national facilities are provided by the NZ eScience Infrastructure and funded jointly by NeSI's collaborator institutions and through the Ministry of Business, Innovation & Employment's Research Infrastructure programme (https://www.nesi.org.nz). NJR is a Royal Society of New Zealand Rutherford Discovery Fellow. AS is a University of Auckland Doctoral Scholar. TS acknowledges financial support from the Japan Society for the Promotion of Science (JSPS) under grant numbers JSPS23103002, JSPS24253004 and JSPS26247023. NK is supported by Grant-in-Aid for JSPS Fellows. The MOA project is supported by JSPS grants JSPS25103508 and by the Royal Society of New Zealand Marsden Grant MAU1104.
History
Citation
Monthly Notices of the Royal Astronomical Society, 2017, 470 (1), pp. 539-550Author affiliation
/Organisation/COLLEGE OF SCIENCE AND ENGINEERING/Department of Physics and AstronomyVersion
- VoR (Version of Record)
Published in
Monthly Notices of the Royal Astronomical SocietyPublisher
Oxford University Press (OUP), Royal Astronomical Societyissn
0035-8711eissn
1365-2966Acceptance date
2017-05-18Copyright date
2017Available date
2019-09-24Publisher DOI
Publisher version
https://academic.oup.com/mnras/article/doi/10.1093/mnras/stx1280/3850236Language
enAdministrator link
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