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@article{1855745,
author = {Blažek, Martin and Kabáth, Petr and Piette, Anjali A. A. and Madhusudhan, Nikku and Skarka, Marek and Šubjak, Ján and Anderson, David R. and Boffin, Henri M. J. and Cáceres, Claudio C. and Gibson, Neale P. and Hoyer, Sergio and Ivanov, Valentin D. and Rojo, Patricio M.},
article_number = {3},
doi = {http://dx.doi.org/10.1093/mnras/stac992},
keywords = {techniques: photometric; planets and satellites: atmospheres; stars: individual: WASP targets; infrared: planetary systems; methods: data analysis},
language = {eng},
issn = {0035-8711},
journal = {Monthly Notices of the Royal Astronomical Society},
title = {Constraints on TESS albedos for five hot Jupiters},
url = {https://academic.oup.com/mnras/article-abstract/513/3/3444/6565805?redirectedFrom=fulltext},
volume = {513},
year = {2022}
}
TY - JOUR
ID - 1855745
AU - Blažek, Martin - Kabáth, Petr - Piette, Anjali A. A. - Madhusudhan, Nikku - Skarka, Marek - Šubjak, Ján - Anderson, David R. - Boffin, Henri M. J. - Cáceres, Claudio C. - Gibson, Neale P. - Hoyer, Sergio - Ivanov, Valentin D. - Rojo, Patricio M.
PY - 2022
TI - Constraints on TESS albedos for five hot Jupiters
JF - Monthly Notices of the Royal Astronomical Society
VL - 513
IS - 3
SP - 3444-3457
EP - 3444-3457
PB - Oxford University Press
SN - 00358711
KW - techniques: photometric
KW - planets and satellites: atmospheres
KW - stars: individual: WASP targets
KW - infrared: planetary systems
KW - methods: data analysis
UR - https://academic.oup.com/mnras/article-abstract/513/3/3444/6565805?redirectedFrom=fulltext
N2 - Photometric observations of occultations of transiting exoplanets can place important constraints on the thermal emission and albedos of their atmospheres. We analyse photometric measurements and derive geometric albedo (Ag) constraints for five hot Jupiters observed with TESS in the optical: WASP-18 b, WASP-36 b, WASP-43 b, WASP-50 b, and WASP-51 b. For WASP-43 b, our results are complemented by a VLT/HAWK-I observation in the near-infrared at 2.09μm. We derive the first geometric albedo constraints for WASP-50 b and WASP-51 b: Ag < 0.445 and Ag < 0.368, respectively. We find that WASP-43 b and WASP-18 b are both consistent with low geometric albedos (Ag < 0.16) even though they lie at opposite ends of the hot Jupiter temperature range with equilibrium temperatures of ∼1400 K and ∼2500 K, respectively. We report self-consistent atmospheric models that explain broad-band observations for both planets from TESS, HST, Spitzer, and VLT/HAWK-I. We find that the data of both hot Jupiters can be explained by thermal emission alone and inefficient day–night energy redistribution. The data do not require optical scattering from clouds/hazes, consistent with the low geometric albedos observed.
ER -
BLAŽEK, Martin, Petr KABÁTH, Anjali A. A. PIETTE, Nikku MADHUSUDHAN, Marek SKARKA, Ján ŠUBJAK, David R. ANDERSON, Henri M. J. BOFFIN, Claudio C. CÁCERES, Neale P. GIBSON, Sergio HOYER, Valentin D. IVANOV a Patricio M. ROJO. Constraints on TESS albedos for five hot Jupiters. \textit{Monthly Notices of the Royal Astronomical Society}. Oxford University Press, 2022, roč.~513, č.~3, s.~3444-3457. ISSN~0035-8711. Dostupné z: https://dx.doi.org/10.1093/mnras/stac992.
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