A possibly solar metallicity atmosphere escaping from HAT-P-32b revealed by Hα and He absorption

doi:10.1051/0004-6361/202348210

YNAO OpenIR > 恒星物理研究组

	A possibly solar metallicity atmosphere escaping from HAT-P-32b revealed by Hα and He absorption
	Yan DD(闫冬冬)1,2,3 ; Guo JH(郭建恒)1,2,3,4 ; Seon, Kwang-il 5,6; López, Manuel 7; Czesla, Stefan 8; Lampón, Manuel 7
发表期刊	ASTRONOMY & ASTROPHYSICS
	2024-06-13
卷号	686
DOI	10.1051/0004-6361/202348210
产权排序	第1完成单位
收录类别	SCI ; EI
关键词	hydrodynamics radiative transfer methods: numerical planets and satellites: atmospheres planets and satellites: composition planets and satellites: individual: HAT-P-32b
摘要	This paper presents a hydrodynamic simulation that couples detailed non-local thermodynamic equilibrium (NLTE) calculations of the helium and hydrogen level populations to model the H alpha and He 10830 transmission spectra of the hot Jupiter HAT-P-32b. A Monte Carlo simulation was applied to calculate the number of Ly alpha resonance scatterings, which is the main process for populating H(2). In the examined parameter space, only models with H/He >= 99.5/0.5, (0.5 similar to 3.0) times the fiducial value of F-XUV, and spectral index beta(m) = (0.16 similar to 0.3), can explain the H alpha and He 10830 lines simultaneously. We found a mass-loss rate of similar to(1.0 similar to 3.1) x 10(13) g s(-1), consistent with previous studies. Moreover, we found that the stellar Ly alpha flux should be as high as 4 x 10(5) erg cm(-2) s(-1), indicating high stellar activity during the observation epoch of the two absorption lines. Despite the fact that the metallicity in the lower atmosphere of HAT-P-32b may be super-solar, our simulations tentatively suggest it is close to solar in the upper atmosphere. Understanding the difference in metallicity between the lower and upper atmospheres is essential for future atmospheric characterisations.
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDB 41000000]; National Key R&D Program of China[2021YFA1600400/2021YFA1600402]; National Natural Science Foundation of China[11973082]; National Natural Science Foundation of China[12288102]; National Natural Science Foundation of China[42305136]; Natural Science Foundation of Yunnan Province[202201AT070158]; Natural Science Foundation of Yunnan Province[202401CF070041]; International Centre of Supernovae, Yunnan Key Laboratory[202302AN360001]; National Research Foundation of Korea (NRF) - Korean government (MSIT)[2020R1A2C1005788]; Korea Astronomy and Space Science Institute - Korea government (MSIT)[2023183000]; DFG[CZ 222/5-1]; Agencia Estatal de Investigacion, MCIN/AEI[PID2022-141216NB-I00]; Agencia Estatal de Investigacion, MCIN/AEI[CEX2021-001131-S]
项目资助者	Strategic Priority Research Program of the Chinese Academy of Sciences[XDB 41000000] ; National Key R&D Program of China[2021YFA1600400/2021YFA1600402] ; National Natural Science Foundation of China[11973082, 12288102, 42305136] ; Natural Science Foundation of Yunnan Province[202201AT070158, 202401CF070041] ; International Centre of Supernovae, Yunnan Key Laboratory[202302AN360001] ; National Research Foundation of Korea (NRF) - Korean government (MSIT)[2020R1A2C1005788] ; Korea Astronomy and Space Science Institute - Korea government (MSIT)[2023183000] ; DFG[CZ 222/5-1] ; Agencia Estatal de Investigacion, MCIN/AEI[PID2022-141216NB-I00, CEX2021-001131-S]
语种	英语
学科领域	天文学 ; 恒星与银河系
文章类型	Article
出版者	EDP SCIENCES S A
出版地	17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE
ISSN	0004-6361
URL	查看原文
WOS记录号	WOS:001246762400011
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	EXTENDED UPPER-ATMOSPHERE ; INTRINSIC LY-ALPHA ; MASS-LOSS RATES ; TRANSMISSION SPECTRUM ; EXOPLANET ATMOSPHERES ; RADIATIVE-TRANSFER ; HELIUM ABSORPTION ; FRAUNHOFER LINES ; NEUTRAL HYDROGEN ; PARTICLE FLUXES
EI入藏号	20242516290845
EI主题词	Hydrodynamics
EI分类号	443.1 Atmospheric Properties - 655.2 Satellites - 657.2 Extraterrestrial Physics and Stellar Phenomena - 723.4 Artificial Intelligence - 921.6 Numerical Methods - 922.2 Mathematical Statistics
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
版本	出版稿
条目标识符	http://ir.ynao.ac.cn/handle/114a53/27405
专题	恒星物理研究组中国科学院天体结构与演化重点实验室
作者单位	1.Yunnan Observatories, Chinese Academy of Sciences, PO Box 110, Kunming 650216, PR China; 2.Key Laboratory for the Structure and Evolution of Celestial Objects, CAS, Kunming 650216, PR China; 3.International Centre of Supernovae, Yunnan Key Laboratory, Kunming 650216, PR China; 4.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing, PR China; 5.Korea Astronomy & Space Science Institute,776 Daedeokdae-ro, Yuseong-gu, Daejeon 34055, Republic of Korea; 6.Astronomy and Space Science Major, University of Science and Technology,217, Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea; 7.Instituto de Astrofísica de Andalucía (IAA-CSIC), Glorieta de la Astronomía s/n, 18008 Granada, Spain; 8.Thüringer Landessternwarte Tautenburg, Sternwarte 5, 07778 Tautenburg, Germany
第一作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	Yan DD,Guo JH,Seon, Kwang-il,et al. A possibly solar metallicity atmosphere escaping from HAT-P-32b revealed by Hα and He absorption[J]. ASTRONOMY & ASTROPHYSICS,2024,686.
APA	闫冬冬,郭建恒,Seon, Kwang-il,López, Manuel,Czesla, Stefan,&Lampón, Manuel.(2024).A possibly solar metallicity atmosphere escaping from HAT-P-32b revealed by Hα and He absorption.ASTRONOMY & ASTROPHYSICS,686.
MLA	闫冬冬,et al."A possibly solar metallicity atmosphere escaping from HAT-P-32b revealed by Hα and He absorption".ASTRONOMY & ASTROPHYSICS 686(2024).

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