Optical phase curve of the ultra-hot Jupiter WASP-121b

被引：50

作者：

Bourrier, V ^{[1
]}

Kitzmann, D. ^{[2
]}

Kuntzer, T. ^{[1
]}

Nascimbeni, V ^{[3
]}

Lendl, M. ^{[1
]}

Lavie, B. ^{[1
]}

Hoeijmakers, H. J. ^{[1
,2
]}

Pino, L. ^{[4
]}

Ehrenreich, D. ^{[1
]}

Heng, K. ^{[2
]}

Allart, R. ^{[1
]}

Cegla, H. M. ^{[1
]}

Dumusque, X. ^{[1
]}

Melo, C. ^{[5
]}

Astudillo-Defru, N. ^{[6
]}

Caldwell, D. A. ^{[7
,8
]}

Cretignier, M. ^{[1
]}

Giles, H. ^{[1
]}

Henze, C. E. ^{[8
]}

Jenkins, J. ^{[8
]}

Lovis, C. ^{[1
]}

Murgas, F. ^{[9
,10
]}

Pepe, F. ^{[1
]}

Ricker, G. R. ^{[11
,12
]}

Rose, M. E. ^{[8
]}

Seager, S. ^{[11
,12
,13
,14
]}

Segransan, D. ^{[1
]}

Suarez-Mascareno, A. ^{[9
]}

Udry, S. ^{[1
]}

Vanderspek, R. ^{[11
,12
]}

Wyttenbach, A. ^{[15
]}

机构：

[1] Observ Univ Geneve, 51 Chemin Maillettes, CH-1290 Versoix, Switzerland

[2] Univ Bern, Ctr Space & Habitabil, Gesellschaftsstr 6, CH-3012 Bern, Switzerland

[3] INAF Osservatorio Astron Padova, Vicolo Osservatorio 5, I-35122 Padua, Italy

[4] Univ Amsterdam, Anton Pannekoek Inst Astron, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands

[5] European Southern Observ, Alonso de Cordova 3107, Vitacura, Region Metropol, Chile

[6] Univ Catolica Santisima Concepcion, Dept Matemat & Fis Aplicadas, Alonso de Rivera 2850, Concepcion, Chile

[7] SETI Inst, Mountain View, CA 94043 USA

[8] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA

[9] IAC, Tenerife 38205, Spain

[10] ULL, Dept Astrofis, Tenerife 38206, Spain

[11] MIT, Dept Phys, Cambridge, MA 02139 USA

[12] MIT, Kavli Inst Astrophys & Space Res, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[13] MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA

[14] MIT, Dept Aeronaut & Astronaut, 77 Massachusetts Ave, Cambridge, MA 02139 USA

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

来源：

ASTRONOMY & ASTROPHYSICS | 2020年 / 637卷

基金：

欧洲研究理事会; 瑞士国家科学基金会;

关键词：

planetary systems; planets and satellites: individual: WASP-121b; planets and satellites: atmospheres; techniques: photometric; ATMOSPHERES; EFFICIENT; LIGHT; EXOPLANET; CLOUDS;

D O I：

10.1051/0004-6361/201936647

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the analysis of TESS optical photometry of WASP-121b, which reveals the phase curve of this transiting ultra-hot Jupiter. Its hotspot is located at the sub-stellar point, showing inefficient heat transport from the dayside (2870 +/- 50 K) to the nightside (<2500 K at 3<sigma>) at the altitudes probed by TESS. The TESS eclipse depth, measured at the shortest wavelength to date for WASP-121b, confirms the strong deviation from blackbody planetary emission. Our atmospheric retrieval on the complete emission spectrum supports the presence of a temperature inversion, which can be explained by the presence of VO and possibly TiO and FeH. The strong planetary emission at short wavelengths could arise from an H- continuum.

引用

页数：11

共 53 条

[1] Detectability of shape deformation in short-period exoplanets [J].

Akinsanmi, B. ;

Barros, S. C. C. ;

Santos, N. C. ;

Correia, A. C. M. ;

Maxted, P. F. L. ;

Boue, G. ;

Laskar, J. .

ASTRONOMY & ASTROPHYSICS, 2019, 621

[2] H- Opacity and Water Dissociation in the Dayside Atmosphere of the Very Hot Gas Giant WASP-18b [J].

Arcangeli, Jacob ;

Desert, Jean-Michel ;

Line, Michael R. ;

Bean, Jacob L. ;

Parmentier, Vivien ;

Stevenson, Kevin B. ;

Kreidberg, Laura ;

Fortney, Jonathan J. ;

Mansfield, Megan ;

Showman, Adam P. .

ASTROPHYSICAL JOURNAL LETTERS, 2018, 855 (02)

[3] The Chemical Composition of the Sun [J].

Asplund, Martin ;

Grevesse, Nicolas ;

Sauval, A. Jacques ;

Scott, Pat .

ANNUAL REVIEW OF ASTRONOMY AND ASTROPHYSICS, VOL 47, 2009, 47 :481-522

[4]

Barentsen G., 2018, KEPLERGO LIGHTKURVE

[5] Increased Heat Transport in Ultra-hot Jupiter Atmospheres through H2 Dissociation and Recombination [J].

Bell, Taylor J. ;

Cowan, Nicolas B. .

ASTROPHYSICAL JOURNAL LETTERS, 2018, 857 (02)

[6] Hot Exoplanet Atmospheres Resolved with Transit Spectroscopy (HEARTS) III. Atmospheric structure of the misaligned ultra-hot Jupiter WASP-121b [J].

Bourrier, V. ;

Ehrenreich, D. ;

Lendl, M. ;

Cretignier, M. ;

Allart, R. ;

Dumusque, X. ;

Cegla, H. M. ;

Suarez-Mascareno, A. ;

Wyttenbach, A. ;

Hoeijmakers, H. J. ;

Melo, C. ;

Kuntzer, T. ;

Astudillo-Defru, N. ;

Giles, H. ;

Heng, K. ;

Kitzmann, D. ;

Lavie, B. ;

Lovis, C. ;

Murgas, F. ;

Nascimbeni, V. ;

Pepe, F. ;

Pino, L. ;

Segransan, D. ;

Udry, S. .

ASTRONOMY & ASTROPHYSICS, 2020, 635

[7] Limb and gravity-darkening coefficients for the TESS satellite at several metallicities, surface gravities, and microturbulent velocities [J].

Claret, A. .

ASTRONOMY & ASTROPHYSICS, 2017, 600

[8] WASP-121 b: a hot Jupiter close to tidal disruption transiting an active F star [J].

Delrez, L. ;

Santerne, A. ;

Almenara, J. -M. ;

Anderson, D. R. ;

Collier-Cameron, A. ;

Diaz, R. F. ;

Gillon, M. ;

Hellier, C. ;

Jehin, E. ;

Lendl, M. ;

Maxted, P. F. L. ;

Neveu-VanMalle, M. ;

Pepe, F. ;

Pollacco, D. ;

Queloz, D. ;

Segransan, D. ;

Smalley, B. ;

Smith, A. M. S. ;

Triaud, A. H. M. J. ;

Udry, S. ;

Van Grootel, V. ;

West, R. G. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2016, 458 (04) :4025-4043

[9] High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP) I. Lucky imaging observations of 101 systems in the southern hemisphere [J].

Evans, D. F. ;

Southworth, J. ;

Maxted, P. F. L. ;

Skottfelt, J. ;

Hundertmark, M. ;

Jorgensen, U. G. ;

Dominik, M. ;

Alsubai, K. A. ;

Andersen, M. I. ;

Bozza, V. ;

Bramich, D. M. ;

Burgdorf, M. J. ;

Ciceri, S. ;

D'Ago, G. ;

Jaimes, R. Figuera ;

Gu, S. -H. ;

Haugbolle, T. ;

Hinse, T. C. ;

Juncher, D. ;

Kains, N. ;

Kerins, E. ;

Korhonen, H. ;

Kuffmeier, M. ;

Mancini, L. ;

Peixinho, N. ;

Popovas, A. ;

Rabus, M. ;

Rahvar, S. ;

Schmidt, R. W. ;

Snodgrass, C. ;

Starkey, D. ;

Surdej, J. ;

Tronsgaard, R. ;

von Essen, C. ;

Wang, Yi-Bo ;

Wertz, O. .

ASTRONOMY & ASTROPHYSICS, 2016, 589

[10] An Optical Transmission Spectrum for the Ultra-hot Jupiter WASP-121b Measured with the Hubble Space Telescope [J].

Evans, Thomas M. ;

Sing, David K. ;

Goyal, Jayesh M. ;

Nikolov, Nikolay ;

Marley, Mark S. ;

Zahnle, Kevin ;

Henry, Gregory W. ;

Barstow, Joanna K. ;

Alam, Munazza K. ;

Sanz-Forcada, Jorge ;

Kataria, Tiffany ;

Lewis, Nikole K. ;

Lavvas, Panayotis ;

Ballester, Gilda E. ;

Ben-Jaffel, Lotfi ;

Blumenthal, Sarah D. ;

Bourrier, Vincent ;

Drummond, Benjamin ;

Munoz, Antonio Garcia ;

Lopez-Morales, Mercedes ;

Tremblin, Pascal ;

Ehrenreich, David ;

Wakeford, Hannah R. ;

Buchhave, Lars A. ;

des Etangs, Alain Lecavelier ;

Hebrard, Eric ;

Williamson, Michael H. .

ASTRONOMICAL JOURNAL, 2018, 156 (06)

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