New observations and transit solutions of the exoplanets HAT-P-54b and WASP-153b
We present photometric observations of the newly-discovered transiting exoplanets HAT-P-54b and WASP-153b with the Rozhen 2 m telescope. As a result we improved their periods. The modeling of the new transits led to almost identical values of orbital inclinations and stellar radii to the first publi...
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Astronomical Observatory, Department of Astronomy, Belgrade
2019-01-01
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doaj-dcedbdc3236145c390f415d68b7fa9832020-11-25T00:41:02ZengAstronomical Observatory, Department of Astronomy, BelgradeSerbian Astronomical Journal1450-698X1820-92892019-01-012019198556010.2298/SAJ181022002K1450-698X1900002KNew observations and transit solutions of the exoplanets HAT-P-54b and WASP-153bKjurkchieva Diana0Petrov Nikola1Ibryamov Sunay2Shumen University, Department of Physics, Shumen, BulgariaBulgarian Academy of Sciences, Institute of Astronomy and NAO, Sofia, BulgariaShumen University, Department of Physics, Shumen, BulgariaWe present photometric observations of the newly-discovered transiting exoplanets HAT-P-54b and WASP-153b with the Rozhen 2 m telescope. As a result we improved their periods. The modeling of the new transits led to almost identical values of orbital inclinations and stellar radii to the first published values while the planet radii were slightly different: that of HAT-P-54b was bigger and that of WASP-153b was smaller. The more bloated nature of WASP-153b is a result of its considerable close orbit and high stellar temperature. Our calculation of the WASP-153 distance is very close to that measured by GAIA. The best fits of the newly-observed transits of HAT-P-54b and WASP-153b correspond to the quadratic limb-darkening law of their host stars whose coefficients were determined. Our results confirmed the hot Jupiter nature of the two targets.http://www.doiserbia.nb.rs/img/doi/1450-698X/2019/1450-698X1900002K.pdfStars: planetary systemsTechniques: photometricStars: individual:HAT-P-54b, WASP-153b |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Kjurkchieva Diana Petrov Nikola Ibryamov Sunay |
spellingShingle |
Kjurkchieva Diana Petrov Nikola Ibryamov Sunay New observations and transit solutions of the exoplanets HAT-P-54b and WASP-153b Serbian Astronomical Journal Stars: planetary systems Techniques: photometric Stars: individual:HAT-P-54b, WASP-153b |
author_facet |
Kjurkchieva Diana Petrov Nikola Ibryamov Sunay |
author_sort |
Kjurkchieva Diana |
title |
New observations and transit solutions of the exoplanets HAT-P-54b and WASP-153b |
title_short |
New observations and transit solutions of the exoplanets HAT-P-54b and WASP-153b |
title_full |
New observations and transit solutions of the exoplanets HAT-P-54b and WASP-153b |
title_fullStr |
New observations and transit solutions of the exoplanets HAT-P-54b and WASP-153b |
title_full_unstemmed |
New observations and transit solutions of the exoplanets HAT-P-54b and WASP-153b |
title_sort |
new observations and transit solutions of the exoplanets hat-p-54b and wasp-153b |
publisher |
Astronomical Observatory, Department of Astronomy, Belgrade |
series |
Serbian Astronomical Journal |
issn |
1450-698X 1820-9289 |
publishDate |
2019-01-01 |
description |
We present photometric observations of the newly-discovered transiting exoplanets HAT-P-54b and WASP-153b with the Rozhen 2 m telescope. As a result we improved their periods. The modeling of the new transits led to almost identical values of orbital inclinations and stellar radii to the first published values while the planet radii were slightly different: that of HAT-P-54b was bigger and that of WASP-153b was smaller. The more bloated nature of WASP-153b is a result of its considerable close orbit and high stellar temperature. Our calculation of the WASP-153 distance is very close to that measured by GAIA. The best fits of the newly-observed transits of HAT-P-54b and WASP-153b correspond to the quadratic limb-darkening law of their host stars whose coefficients were determined. Our results confirmed the hot Jupiter nature of the two targets. |
topic |
Stars: planetary systems Techniques: photometric Stars: individual:HAT-P-54b, WASP-153b |
url |
http://www.doiserbia.nb.rs/img/doi/1450-698X/2019/1450-698X1900002K.pdf |
work_keys_str_mv |
AT kjurkchievadiana newobservationsandtransitsolutionsoftheexoplanetshatp54bandwasp153b AT petrovnikola newobservationsandtransitsolutionsoftheexoplanetshatp54bandwasp153b AT ibryamovsunay newobservationsandtransitsolutionsoftheexoplanetshatp54bandwasp153b |
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1725287468956123136 |