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Qatar Exoplanet Survey : Qatar-3b, Qatar-4b, and Qatar-5b
- Alsubai, Khalid (author)
- Mislis, Dimitris (author)
- Tsvetanov, Zlatan I. (author)
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- Latham, David W. (author)
- Bieryla, Allyson (author)
- Buchhave, Lars A. (author)
- Esquerdo, Gilbert A. (author)
- Bramich, D. M. (author)
- Pyrzas, Stylianos (author)
- Vilchez, Nicolas P. E. (author)
- Mancini, Luigi (author)
- Southworth, John (author)
- Evans, Daniel F. (author)
- Henning, Thomas (author)
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- (creator_code:org_t)
- 2017-04-04
- 2017
- English.
- In: Astronomical Journal. - : American Astronomical Society. - 0004-6256 .- 1538-3881. ; 153:4
- Journal article (peer-reviewed)
Abstract
Subject headings
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- 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-Q3b = 2.50792 days, P-Q4b = 1.80539 days, and P-Q5b = 2.87923 days. Follow-up spectroscopic observations reveal the masses of the planets to be M-Q3b = 4.31 +/- 0.47 M-J, M-Q4b = 6.10 +/- 0.54 M-J, and M-Q5b = 4.32 +/- 0.18 M-J, while model fits to the transit light curves yield radii of R-Q3b = 1.096 +/- 0.14 RJ, R-Q4b = 1.135 +/- 0.11 R-J, and R-Q5b = 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 circle dot, M-Q4 = 0.896 +/- 0.048 M circle dot, M-Q5 = 1.128 +/- 0.056 M circle dot and R-Q3 = 1.272 +/- 0.14 R circle dot, R-Q4 = 0.849 +/- 0.063 R circle dot, and R-Q5 = 1.076 +/- 0.051 R circle dot 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).
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- planetary systems
- planets and satellites: gaseous planets
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- ref (subject category)
- art (subject category)
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- Mislis, Dimitris
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- Latham, David W.
- Bieryla, Allyson
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- Esquerdo, Gilber ...
- Bramich, D. M.
- Pyrzas, Styliano ...
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- Mancini, Luigi
- Southworth, John
- Evans, Daniel F.
- Henning, Thomas
- Ciceri, Simona
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