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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 742897.0, MPI für Astronomie / Publikationen_mpia
Qatar Exoplanet Survey : Qatar-3b, Qatar-4b, and Qatar-5b
Authors:Alsubai, K.; Mislis, D.; Tsvetanov, Z. I.; Latham, D. W.; Bieryla, A.; Buchhave, L. A.; Esquerdo, G. A.; Bramich, D. M.; Pyrzas, S.; Vilchez, N. P. E.; Mancini, L.; Southworth, J.; Evans, D. F.; Henning, T.; Ciceri, S.
Date of Publication (YYYY-MM-DD):2017
Title of Journal:The Astronomical Journal
Issue / Number:4
Start Page:id. 200 (8 pp)
Audience:Not Specified
Abstract / Description:We report the discovery of Qatar-3b, Qatar-4b, and Qatar-5b, three new transiting planets identified by the Qatar Exoplanet Survey. The three planets belong to the hot Jupiter family, with orbital periods of {P}{{Q}3{{b}}} = 2.50792 days, {P}{{Q}4{{b}}} = 1.80539 days, and {P}{{Q}5{{b}}} = 2.87923 days. Follow-up spectroscopic observations reveal the masses of the planets to be {M}{{Q}3{{b}}} = 4.31 ± 0.47 {M}{{J}}, {M}{{Q}4{{b}}} = 6.10 ± 0.54 {M}{{J}}, and {M}{{Q}5{{b}}} = 4.32 ± 0.18 {M}{{J}}, while model fits to the transit light curves yield radii of {R}{{Q}3{{b}}} = 1.096 ± 0.14 {R}{{J}}, {R}{{Q}4{{b}}} = 1.135 ± 0.11 {R}{{J}}, and {R}{{Q}5{{b}}} = 1.107 ± 0.064 {R}{{J}}. The host stars are low-mass main sequence stars with masses and radii M Q3 = 1.145 ± 0.064 M , M Q4 = 0.896 ± 0.048 M , M Q5 = 1.128 ± 0.056 M and R Q3 = 1.272 ± 0.14 R , R Q4 = 0.849 ± 0.063 R , and R Q5 = 1.076 ± 0.051 R for Qatar-3, 4, and 5 respectively. The V magnitudes of the three host stars are V Q3 = 12.88, V Q4 = 13.60, and V Q5 = 12.82. All three new planets can be classified as heavy hot Jupiters (M > 4 M J).
Free Keywords:planetary systems; planets and satellites: gaseous planets
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:ISSN:0004-6256 %R 10.3847/1538-3881/aa6340
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