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Physical properties, transmission and emission spectra of the WASP-19 planetary system from multi-colour photometry
Mancini, L1,2; Ciceri, S1; Chen, G1,3; Tregloan-Reed, J4; Fortney, JJ5; Southworth, J4; Tan, TG6; Burgdorf, M7; Novati, SC2,8; Dominik, M9; Fang XS(房祥松)10; Finet, F11; Gerner, T12; Hardis, S13,14; Hinse, TC15; Jorgensen, UG13,14; Liebig, C9; Nikolov, N1,16; Ricci, D11,17; Schaefer, S18; Schoenebeck, F12; Skottfelt, J13,14; Wertz, O11; Alsubai, KA19; Bozza, V2,20; Browne, P10; Dodds, P9; Gu SH(顾盛宏)10,21; Harpsoe, K13,14; Henning, T1; Hundertmark, M9; Jessen-Hansen, J22; Kains, N23; Kerins, E24; Kjeldsen, H22; Lund, MN22; Lundkvist, M22; Madhusudhan, N25; Mathiasen, M13,14; Penny, MT26; Prof, S12; Rahvar, S27; Sahu, K28; Scarpetta, G2,8,20; Snodgrass, C29; Surdej, J11
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2013-11
Volume436Issue:1Pages:2-18
DOI10.1093/mnras/stt1394
Contribution Rank第10完成单位
Indexed BySCI
KeywordTechniques: Photometric Stars: Fundamental Parameters Stars: Individual: Wasp-19 Planetary Systems Starspots
Abstract

We present new ground-based, multi-colour, broad-band photometric measurements of the physical parameters, transmission and emission spectra of the transiting extrasolar planet WASP-19b. The measurements are based on observations of eight transits and four occultations through a Gunn i filter using the 1.54-m Danish Telescope, 14 transits through an R-c filter at the Perth Exoplanet Survey Telescope (PEST) observatory and one transit observed simultaneously through four optical (Sloan g', r', i', z') and three near-infrared (J, H, K) filters, using the Gamma Ray Burst Optical and Near-Infrared Detector (GROND) instrument on the MPG/ESO 2.2-m telescope. The GROND optical light curves have a point-to-point scatter around the best-fitting model between 0.52 and 0.65 mmag rms. We use these new data to measure refined physical parameters for the system. We find the planet to be more bloated (R-b = 1.410 +/- 0.017R(Jup); M-b = 1.139 +/- 0.030M(Jup)) and the system to be twice as old as initially thought. We also used published and archived data sets to study the transit timings, which do not depart from a linear ephemeris. We detected an anomaly in the GROND transit light curve which is compatible with a spot on the photosphere of the parent star. The starspot position, size, spot contrast and temperature were established. Using our new and published measurements, we assembled the planet's transmission spectrum over the 370-2350 nm wavelength range and its emission spectrum over the 750-8000 nm range. By comparing these data to theoretical models we investigated the theoretically predicted variation of the apparent radius of WASP-19b as a function of wavelength and studied the composition and thermal structure of its atmosphere. We conclude that: (i) there is no evidence for strong optical absorbers at low pressure, supporting the common idea that the planet's atmosphere lacks a dayside inversion; (ii) the temperature of the planet is not homogenized, because the high warming of its dayside causes the planet to be more efficient in re-radiating than redistributing energy to the night side; (iii) the planet seems to be outside of any current classification scheme.

Funding ProjectSTFC ; European Community[229517] ; European Community[268421] ; Danish National Research Foundation ; Qatar Foundation from QNRF[NPRP-09-476-1-078] ; NSFC[10873031] ; Chinese Academy of Sciences[KJCX2-YW-T24] ; ASTERISK project (ASTERoseismic Investigations with SONG and Kepler) ; European Research Council[267864] ; Communaute francaise de Belgique - Actions de recherche concertees-Academie Wallonie-Europe ; Korea Research Council for Fundamental Science and Technology (KRCF) through the Young Research Scientist Fellowship Program ; KASI (Korea Astronomy and Space Science Institute)[2012-1-410-02/2013-9-400-00]
Funding OrganizationSTFC ; European Community[229517, 268421] ; Danish National Research Foundation ; Qatar Foundation from QNRF[NPRP-09-476-1-078] ; NSFC[10873031] ; Chinese Academy of Sciences[KJCX2-YW-T24] ; ASTERISK project (ASTERoseismic Investigations with SONG and Kepler) ; European Research Council[267864] ; Communaute francaise de Belgique - Actions de recherche concertees-Academie Wallonie-Europe ; Korea Research Council for Fundamental Science and Technology (KRCF) through the Young Research Scientist Fellowship Program ; KASI (Korea Astronomy and Space Science Institute)[2012-1-410-02/2013-9-400-00]
Language英语
Subject Area天文学 ; 天体物理学 ; 实测天体物理学 ; 恒星与银河系 ; 恒星天文学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherOXFORD UNIV PRESS
Publication PlaceGREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0035-8711
URL查看原文
WOS IDWOS:000326435100025
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordTRANSITING EXTRASOLAR PLANETS ; HIGH-PRECISION PHOTOMETRY ; GROUND-BASED DETECTION ; EXOPLANET WASP-19B ; THERMAL EMISSION ; HOT-JUPITER ; LIGHT CURVES ; TELESCOPE ; ATMOSPHERES ; RADIUS
Citation statistics
Cited Times:38[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6790
Collection系外行星研究组
中国科学院天体结构与演化重点实验室
Corresponding AuthorMancini, L
Affiliation1.Max Planck Institute for Astronomy, Konigstuhl 17, D-69117 Heidelberg, Germany
2.Department of Physics, University of Salerno, I-84084-Fisciano (SA), Italy
3.Purple Mountain Observatory & Key Laboratory for Radio Astronomy, 2 West Beijing Road, Nanjing 210008, China
4.Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK
5.Department of Astronomy & Astrophysics, University of California, Santa Cruz, CA 95064, USA
6.Perth Exoplanet Survey Telescope, Perth, Australia
7.HE Space Operations GmbH, Flughafenallee 24, D-28199 Bremen, Germany
8.Istituto Internazionale per gli Alti Studi Scientifici (IIASS), I-84019 Vietri Sul Mare (SA), Italy
9.SUPA, University of St Andrews, School of Physics & Astronomy, North Haugh, St Andrews KY16 9SS, UK
10.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China
11.Institut d’Astrophysique et de Geophysique, Universit ´ e de Li ´ ege, B-4000 Li ` ege, Belgium
12.Zentrum fur Astronomie, Universit ¨ at Heidelberg, M ¨ onchhofstraße 12-14, D-69120 Heidelberg, Germany
13.Niels Bohr Institute, University of Copenhagen, Juliane Maries vej 30, DK-2100 Copenhagen Ø, Denmark
14.Centre for Star and Planet Formation, Geological Museum, Øster Voldgade 5-7, DK-1350 Copenhagen, Denmark
15.Korea Astronomy and Space Science Institute, Daejeon 305-348, Republic of Korea
16.Astrophysics Group, University of Exeter, Stocker Road, Exeter EX4 4QL, UK
17.Instituto de Astronom´ıa – UNAM, Km 103 Carretera Tijuana Ensenada, 422860, Ensenada (Baja Cfa), Mexico
18.Institut fur Astrophysik, Georg-August-Universit ¨ at G ¨ ottingen, Friedrich-Hund-Platz 1, D-37077 G ¨ ottingen, Germany
19.Qatar Foundation, PO Box 5825, Doha, Qatar
20.Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Napoli, Italy
21.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
22.Stellar Astrophysics Centre, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark
23.European Southern Observatory, Karl-Schwarzschild-Straße 2, D-85748 Garching bei Munchen, Germany
24.Jodrell Bank Centre for Astrophysics, University of Manchester, Oxford Road, Manchester M13 9PL, UK
25.Department of Physics and Department of Astronomy, Yale University, New Haven, CT 06511, USA
26.Department of Astronomy, Ohio State University, 140 W. 18th Ave., Columbus, OH 43210, USA
27.Department of Physics, Sharif University of Technology, P. O. Box 11155-9161 Tehran, Iran
28.Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
29.Max-Planck-Institute for Solar system Research, Max-Planck Str. 2, D-37191 Katlenburg-Lindau, Germany
Recommended Citation
GB/T 7714
Mancini, L,Ciceri, S,Chen, G,et al. Physical properties, transmission and emission spectra of the WASP-19 planetary system from multi-colour photometry[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2013,436(1):2-18.
APA Mancini, L.,Ciceri, S.,Chen, G.,Tregloan-Reed, J.,Fortney, JJ.,...&Surdej, J.(2013).Physical properties, transmission and emission spectra of the WASP-19 planetary system from multi-colour photometry.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,436(1),2-18.
MLA Mancini, L,et al."Physical properties, transmission and emission spectra of the WASP-19 planetary system from multi-colour photometry".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 436.1(2013):2-18.
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