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<SUB>Q</SUB>3b = 2.50792 days, P<SUB>Q</SUB>4b = 1.80539 days, and P<SUB>Q</SUB>5b = 2.87923 days. Follow-up spectroscopic observations reveal the masses of the planets to be M<SUB>Q</SUB>3b = 4.31 ± 0.47 M<SUB>J</SUB>, M<SUB>Q</SUB>4b = 6.10 ± 0.54 M<SUB>J</SUB>, and M<SUB>Q</SUB>5b = 4.32 ± 0.18 M<SUB>J</SUB>, while model fits to the transit light curves yield radii of R<SUB>Q</SUB>3b = 1.096 ± 0.14 R<SUB>J</SUB>, R<SUB>Q</SUB>4b = 1.135 ± 0.11 R<SUB>J</SUB>, and R<SUB>Q</SUB>5b = 1.107 ± 0.064 R<SUB>J</SUB>. The host stars are low-mass main sequence stars with masses and radii M <SUB>Q3</SUB> = 1.145 ± 0.064 M <SUB>☉</SUB>, M <SUB>Q4</SUB> = 0.896 ± 0.048 M <SUB>☉</SUB>, M <SUB>Q5</SUB> = 1.128 ± 0.056 M <SUB>☉</SUB> and R <SUB>Q3</SUB> = 1.272 ± 0.14 R <SUB>☉</SUB>, R <SUB>Q4</SUB> = 0.849 ± 0.063 R <SUB>☉</SUB>, and R <SUB>Q5</SUB> = 1.076 ± 0.051 R <SUB>☉</SUB> for Qatar-3, 4, and 5 respectively. The V magnitudes of the three host stars are V <SUB>Q3</SUB> = 12.88, V <SUB>Q4</SUB> = 13.60, and V <SUB>Q5</SUB> = 12.82. All three new planets can be classified as heavy hot Jupiters (M > 4 M <SUB>J</SUB>).

Alsubai, K., Mislis, D., Tsvetanov, Z.i., Latham, D.w., Bieryla, A., Buchhave, L.a., et al. (2017). Qatar Exoplanet Survey : Qatar-3b, Qatar-4b, and Qatar-5b. THE ASTRONOMICAL JOURNAL, 153(4), 200 [10.3847/1538-3881/aa6340].

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

Mancini L.;
2017-01-01

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 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).
2017
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/05 - ASTRONOMIA E ASTROFISICA
English
Alsubai, K., Mislis, D., Tsvetanov, Z.i., Latham, D.w., Bieryla, A., Buchhave, L.a., et al. (2017). Qatar Exoplanet Survey : Qatar-3b, Qatar-4b, and Qatar-5b. THE ASTRONOMICAL JOURNAL, 153(4), 200 [10.3847/1538-3881/aa6340].
Alsubai, K; Mislis, D; Tsvetanov, Zi; Latham, Dw; Bieryla, A; Buchhave, La; Esquerdo, Ga; Bramich, Dm; Pyrzas, S; Vilchez, Npe; Mancini, L; Southworth...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/204689
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