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

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

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


Authors

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

Daniel F. Evans

Thomas Henning

Simona Ciceri



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 ${P}_{{\rm{Q}}3{\rm{b}}}$ = 2.50792 days, ${P}_{{\rm{Q}}4{\rm{b}}}$ = 1.80539 days, and ${P}_{{\rm{Q}}5{\rm{b}}}$ = 2.87923 days. Follow-up spectroscopic observations reveal the masses of the planets to be ${M}_{{\rm{Q}}3{\rm{b}}}$ = 4.31 ± 0.47 ${M}_{{\rm{J}}}$, ${M}_{{\rm{Q}}4{\rm{b}}}$ = 6.10 ± 0.54 ${M}_{{\rm{J}}}$, and ${M}_{{\rm{Q}}5{\rm{b}}}$ = 4.32 ± 0.18 ${M}_{{\rm{J}}}$, while model fits to the transit light curves yield radii of ${R}_{{\rm{Q}}3{\rm{b}}}$ = 1.096 ± 0.14 ${R}_{{\rm{J}}}$, ${R}_{{\rm{Q}}4{\rm{b}}}$ = 1.135 ± 0.11 ${R}_{{\rm{J}}}$, and ${R}_{{\rm{Q}}5{\rm{b}}}$ = 1.107 ± 0.064 ${R}_{{\rm{J}}}$. 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).

Journal Article Type Article
Acceptance Date Feb 23, 2017
Online Publication Date Apr 4, 2017
Publication Date Apr 4, 2017
Publicly Available Date Mar 28, 2024
Journal Astronomical Journal
Print ISSN 0004-6256
Publisher American Astronomical Society
Peer Reviewed Peer Reviewed
Volume 153
Issue 4
Article Number 200
DOI https://doi.org/10.3847/1538-3881/aa6340
Keywords planetary systems, planets and satellites, gaseous planets
Publisher URL http://iopscience.iop.org/article/10.3847/1538-3881/aa6340/meta

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