Thermal emission from the hot Jupiter WASP-103 b in J and Ks bands

被引：3

作者：

Shi, Yaqing ^{[1
,2
,3
]}

Wang, Wei ^{[1
,3
]}

Zhao, Gang ^{[1
]}

Zhai, Meng ^{[1
,3
]}

Chen, Guo ^{[4
]}

Jiang, Zewen ^{[1
,2
]}

Ouyang, Qinglin ^{[2
,3
]}

Henning, Thomas ^{[5
]}

Zhao, Jingkun ^{[1
]}

Crouzet, Nicolas ^{[6
]}

van Boekel, Roy ^{[5
]}

Esteves, Lisa ^{[6
]}

机构：

[1] Chinese Acad Sci, CAS Key Lab Opt Astron, Natl Astron Observ, Beijing 100101, Peoples R China

[2] Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 101408, Peoples R China

[3] Chinese Acad Sci, Chinese Acad Sci South Amer Ctr Astron, Beijing 100012, Peoples R China

[4] Chinese Acad Sci, Key Lab Planetary Sci, Purple Mt Observ, Nanjing 210023, Peoples R China

[5] Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany

[6] Leiden Univ, Leiden Observ, Postbus 9513, NL-2300 RA Leiden, Netherlands

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2023年 / 522卷 / 01期

基金：

美国国家航空航天局; 中国国家自然科学基金;

关键词：

techniques: photometric; planets and satellites: atmospheres; planets and satellites: gaseous planets; planets and satellites: individual:(WASP-103b); OPTICAL-TRANSMISSION SPECTRUM; COLLISION-INDUCED ABSORPTION; EXOMOL LINE LISTS; WATER-ABSORPTION; GIANT PLANETS; H-2-HE PAIRS; LIGHT CURVES; ATMOSPHERE; TEMPERATURES; EXOPLANETS;

D O I：

10.1093/mnras/stad891

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Hot Jupiters, particularly those with temperature higher than 2000 K, are the best sample of planets that allow in-depth characterization of their atmospheres. We present here a thermal emission study of the ultrahot Jupiter WASP-103 b observed in two secondary eclipses with CFHT/WIRCam in J and K-s bands. By means of high precision differential photometry, we determine eclipse depths in J and K-s to an accuracy of 220 and 270 ppm, which are combined with the published HST/WFC3 and Spitzer data to retrieve a joint constraints on the properties of WASP-103 b dayside atmosphere. We find that the atmosphere is best fit with a thermal inversion layer included. The equilibrium chemistry retrie v al indicates an enhanced C/O (1.35(-0.17)(+0.14) ) and a supermetallicity with [Fe/H]= 2. 19(-0 .63)(+ 0.51) composition. Given the near-solar metallicity of WASP-103 of [Fe/H] = 0.06, this planet seems to be similar to 100 more abundant than its host star. The free chemistry retrie v al analysis yields a large abundance of FeH, H-, CO2, and CH4. Additional data of better accurac y from future observations of JWST should pro vide better constraint of the atmospheric properties of WASP-103b.

引用

页码：1491 / 1503

页数：13

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