Physical properties and transmission spectrum of the WASP-74 planetary system from multiband photometry

doi:10.1093/mnras/stz661

	Physical properties and transmission spectrum of the WASP-74 planetary system from multiband photometry
	Mancini, L.1,2,3,4; Southworth, J.5; Molliere, P.6; Tregloan-Reed, J.7; Juvan, I. G.8,9,10; Chen, G.11,12; Sarkis, P.2; Bruni, I.13; Ciceri, S.14; Andersen, M. I.15,16,17
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2019-06-01
卷号	485 期号:4 页码:5168-5179
关键词	techniques: photometric stars: fundamental parameters stars: individual: WASP-74 planetary systems
ISSN号	0035-8711
DOI	10.1093/mnras/stz661
通讯作者	Mancini, L.(lmancini@roma2.infn.it)
英文摘要	We present broad-band photometry of 11 planetary transits of the hot Jupiter WASP-74 b, using three medium-class telescopes and employing the telescope-defocusing technique. Most of the transits were monitored through I filters and one was simultaneously observed in five optical (U, g', r', i', z') and three near-infrared (J, H, K) passbands, for a total of 18 light curves. We also obtained new high-resolution spectra of the host star. We used these new data to review the orbital and physical properties of the WASP-74 planetary system. We were able to better constrain the main system characteristics, measuring smaller radius and mass for both the hot Jupiter and its host star than previously reported in the literature. Joining our optical data with those taken with the HST in the near infrared, we built up an observational transmission spectrum of the planet, which suggests the presence of strong optical absorbers, as TiO and VO gases, in its atmosphere.
WOS关键词	TRANSITING EXTRASOLAR PLANETS ; LIGHT CURVES ; HOT-JUPITER
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000474880400052
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/27380]
专题	中国科学院紫金山天文台
通讯作者	Mancini, L.
作者单位	1.Univ Roma Tor Vergata, Dept Phys, Via Ric Sci 1, I-00133 Rome, Italy 2.Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany 3.INAF Osservatorio Astrofis Torino, Via Osservatorio 20, I-10025 Pino Torinese, Italy 4.IIASS, Via G Pellegrino 19, I-84019 Vietri Sur Mare, SA, Italy 5.Keele Univ, Astrophys Grp, Keele ST5 5BG, Staffs, England 6.Leiden Univ, Leiden Observ, POB 9513, NL-2300 RA Leiden, Netherlands 7.Univ Antofagasta, Ctr Astron CITEVA, Ave U Antofagasta, Antofagasta 02800, Chile 8.Austrian Acad Sci, Space Res Inst, Schmiedlstr 6, A-8042 Graz, Austria 9.Karl Franzens Univ Graz, Inst Geophys Astrophys & Meteorol, Univ Pl 5, A-8010 Graz, Austria 10.Univ Innsbruck, Inst Astro & Teilchenphys, Tech Str 25, A-6020 Innsbruck, Austria
推荐引用方式 GB/T 7714	Mancini, L.,Southworth, J.,Molliere, P.,et al. Physical properties and transmission spectrum of the WASP-74 planetary system from multiband photometry[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,485(4):5168-5179.
APA	Mancini, L..,Southworth, J..,Molliere, P..,Tregloan-Reed, J..,Juvan, I. G..,...&Wertz, O..(2019).Physical properties and transmission spectrum of the WASP-74 planetary system from multiband photometry.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,485(4),5168-5179.
MLA	Mancini, L.,et al."Physical properties and transmission spectrum of the WASP-74 planetary system from multiband photometry".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 485.4(2019):5168-5179.