Qatar Exoplanet Survey: Qatar-3b, Qatar-4b, and Qatar-5b

Khalid Alsubai, Dimitris Mislis, Zlatan I. Tsvetanov, David W. Latham, Allyson Bieryla, Lars A. Buchhave, Gilbert A. Esquerdo, D. M. Bramich, Stylianos Pyrzas, Nicolas P.E. Vilchez, Luigi Mancini, John Southworth, Daniel F. Evans, Thomas Henning, Simona Ciceri

    Research output: Contribution to journalArticlepeer-review

    19 Citations (Scopus)

    Abstract

    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 PQ3b=2.50792 days, PQ4b=1.80539 days, and PQ5b=2.87923 days. Follow-up spectroscopic observations reveal the masses of the planets to be MQ3b=4.31±0.47 MJ, MQ4b=6.10±0.54 MJ, and MQ5b=4.32±0.18 MJ, while model fits to the transit light curves yield radii of RQ3b=1.096±0.14 RJ, RQ4b=1.135±0.11 RJ, and RQ5b= 1.107±0.064 RJ. The host stars are low-mass main sequence stars with masses and radii MQ3= 1.145±0.064 Ṁ, MQ4=0.896±0.048Ṁ, MQ5=1.128±0.056 Ṁ and RQ3=1.272±0.14 RṀ, RQ4=0.849±0.063 R , and RQ5=1.076±0.051 Ṙ for Qatar-3, 4, and 5 respectively. The V magnitudes of the three host stars are VQ3=12.88, VQ4=13.60, and VQ5=12.82. All three new planets can be classified as heavy hot Jupiters (M > 4 MJ).

    Original languageEnglish
    Article number200
    JournalAstronomical Journal
    Volume153
    Issue number4
    DOIs
    Publication statusPublished - Apr 2017

    Keywords

    • planetary systems
    • planets and satellites: gaseous planets

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