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).I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
