ARES I: WASP-76 b, A Tale of Two HST Spectra*

被引：67

作者：

Edwards, Billy ^{[1
]}

Changeat, Quentin ^{[1
]}

Baeyens, Robin ^{[2
]}

Tsiaras, Angelos ^{[1
]}

Al-Refaie, Ahmed ^{[1
]}

Taylor, Jake ^{[3
]}

Yip, Kai Hou ^{[1
]}

Bieger, Michelle Fabienne ^{[4
]}

Blain, Doriann ^{[5
]}

Gressier, Amelie ^{[5
,6
,7
,8
]}

Guilluy, Gloria ^{[9
,10
]}

Jaziri, Adam Yassin ^{[11
]}

Kiefer, Flavien ^{[7
,8
]}

Modirrousta-Galian, Darius ^{[12
,13
]}

Morvan, Mario ^{[1
]}

Mugnai, Lorenzo, V ^{[14
]}

Pluriel, William ^{[11
]}

Poveda, Mathilde ^{[15
,16
]}

Skaf, Nour ^{[1
,5
]}

Whiteford, Niall ^{[17
,18
]}

Wright, Sam ^{[1
]}

Zingales, Tiziano ^{[11
]}

Charnay, Benjamin ^{[5
]}

Drossart, Pierre ^{[5
]}

Leconte, Jeremy ^{[11
]}

Venot, Olivia ^{[15
]}

Waldmann, Ingo ^{[1
]}

Beaulieu, Jean-Philippe ^{[7
,8
,19
]}

机构：

[1] UCL, Dept Phys & Astron, London, England

[2] Katholieke Univ Leuven, Inst Sterrenkunde, Celestijnenlaan 200D Bus 2401, B-3001 Leuven, Belgium

[3] Univ Oxford, Dept Phys Atmospher Ocean & Planetary Phys, Parks Rd, Oxford, England

[4] Univ Exeter, Coll Engn Math & Phys Sci, North Pk Rd, Exeter, Devon, England

[5] Observ Paris, LESIA, Sect Meudon, 5 Pl Jules Janssen, F-92195 Meudon, France

[6] Sorbonne Univ UVSQ, CNRS, LATMOS, 11 Blvd Alembert, F-78280 Guyancourt, France

[7] UPMC Univ Paris 6, Sorbonne Univ, Paris, France

[8] CNRS, UMR 7095, Inst Astrophys Paris, Paris, France

[9] Univ Torino, Dipartimento Fis, Via Pietro Giuria 1, I-10125 Turin, Italy

[10] INAF Osservatorio Astrofis Torino, Via Osservatorio 20, I-10025 Pino Torinese, Italy

[11] Univ Bordeaux, CNRS, Lab Astrophys Bordeaux, B18N,Allee Geoffroy St Hilaire, F-33615 Pessac, France

[12] INAF Osservatorio Astron Palermo, Piazza Parlamento 1, I-90134 Palermo, Italy

[13] Univ Palermo, Dept Phys & Chem, Via Archirafi 36, Palermo, Italy

[14] Univ Roma La Sapienza, Dept Phys, Piazzale Aldo Moro 2, I-00185 Rome, Italy

[15] Univ Paris, Univ Paris Est Creteil, CNRS, Inst Pierre Simon Lapl,LISA,UMR 7583, Creteil, France

[16] Univ Paris Saclay, Univ Paris Sud, UVSQ, CNRS,CEA,Maison Simulat, F-91191 Gif Sur Yvette, France

[17] Univ Edinburgh, Inst Astron, Blackford Hill, Edinburgh EH9 3HJ, Midlothian, Scotland

[18] Univ Edinburgh, Ctr Exoplanet Sci, Edinburgh EH9 3FD, Midlothian, Scotland

[19] Univ Tasmania, Sch Phys Sci, Private Bag 37, Hobart, Tas 7001, Australia

来源：

ASTRONOMICAL JOURNAL | 2020年 / 160卷 / 01期

基金：

欧洲研究理事会;

关键词：

Exoplanet atmospheres; Exoplanet atmospheric composition; Hubble Space Telescope; MOLECULAR LINE LISTS; GIANT EXOPLANET; ATMOSPHERE; HOT; RESOLUTION; INFERENCE; HAT-P-7B; STARS;

D O I：

10.3847/1538-3881/ab9225

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We analyze the transmission and emission spectra of the ultra-hot Jupiter WASP-76 b, observed with the G141 grism of the Hubble Space Telescope's (HST) Wide Field Camera 3 (WFC3). We reduce and fit the raw data for each observation using the open-source software Iraclis before performing a fully Bayesian retrieval using the publicly available analysis suite TauREx 3. Previous studies of the WFC3 transmission spectra of WASP-76 b found hints of titanium oxide (TiO) and vanadium oxide (VO) or non-gray clouds. Accounting for a fainter stellar companion to WASP-76, we reanalyze this data and show that removing the effects of this background star changes the slope of the spectrum, resulting in these visible absorbers no longer being detected, eliminating the need for a non-gray cloud model to adequately fit the data but maintaining the strong water feature previously seen. However, our analysis of the emission spectrum suggests the presence of TiO and an atmospheric thermal inversion, along with a significant amount of water. Given the brightness of the host star and the size of the atmospheric features, WASP-76 b is an excellent target for further characterization with HST, or with future facilities, to better understand the nature of its atmosphere, to confirm the presence of TiO and to search for other optical absorbers.

引用

页数：14

共 21 条

[1] Asymmetry in the atmosphere of the ultra-hot Jupiter WASP-76 b
Demangeon, O. D. S.
Cubillos, P. E.
Singh, V.
Wilson, T. G.
Carone, L.
Bekkelien, A.
Deline, A.
Ehrenreich, D.
Maxted, P. F. L.
Demory, B. -O.
Zingales, T.
Lendl, M.
Bonfanti, A.
Sousa, S. G.
Brandeker, A.
Alibert, Y.
Alonso, R.
Asquier, J.
Barczy, T.
Navascues, D. Barrado
Barros, S. C. C.
Baumjohann, W.
Beck, M.
Beck, T.
Benz, W.
Billot, N.
Biondi, F.
Borsato, L.
Broeg, Ch.
Buder, M.
Cameron, A. Collier
Csizmadia, Sz.
Davies, M. B.
Deleuil, M.
Delrez, L.
Erikson, A.
Fortier, A.
Fossati, L.
Fridlund, M.
Gandolfi, D.
Gillon, M.
Guedel, M.
Guenther, M. N.
Heitzmann, A.
Helling, Ch.
Hoyer, S.
Isaak, K. G.
Kiss, L. L.
Lam, K. W. F.
Laskar, J.
ASTRONOMY & ASTROPHYSICS, 2024, 684
[2] HST/STIS transmission spectrum of the ultra-hot Jupiter WASP-76 b confirms the presence of sodium in its atmosphere
von Essen, C.
Mallonn, M.
Hermansen, S.
Nixon, M. C.
Madhusudhan, N.
Kjeldsen, H.
Tautvaisiene, G.
ASTRONOMY & ASTROPHYSICS, 2020, 637
[3] ESPRESSO high-resolution transmission spectroscopy of WASP-76 b
Tabernero, H.M.
Zapatero Osorio, M.R.
Allart, R.
Borsa, F.
Casasayas-Barris, N.
Demangeon, O.
Ehrenreich, D.
Lillo-Box, J.
Lovis, C.
Pallé, E.
Sousa, S.G.
Rebolo, R.
Santos, N.C.
Pepe, F.
Cristiani, S.
Adibekyan, V.
Allende Prieto, C.
Alibert, Y.
Barros, S.C.C.
Bouchy, F.
Bourrier, V.
D'Odorico, V.
Dumusque, X.
Faria, J.P.
Figueira, P.
Génova Santos, R.
González Hernández, J.I.
Hojjatpanah, S.
Lo Curto, G.
Lavie, B.
Martins, C.J.A.P.
Martins, J.H.C.
Mehner, A.
Micela, G.
Molaro, P.
Nunes, N.J.
Poretti, E.
Seidel, J.V.
Sozzetti, A.
Suárez Mascareño, A.
Udry, S.
Aliverti, M.
Affolter, M.
Alves, D.
Amate, M.
Avila, G.
Bandy, T.
Benz, W.
Bianco, A.
Broeg, C.
Astronomy and Astrophysics, 2021, 646
[4] ESPRESSO high-resolution transmission spectroscopy of WASP-76 b
Tabernero, H. M.
Zapatero Osorio, M. R.
Allart, R.
Borsa, F.
Casasayas-Barris, N.
Demangeon, O.
Ehrenreich, D.
Lillo-Box, J.
Lovis, C.
Palle, E.
Sousa, S. G.
Rebolo, R.
Santos, N. C.
Pepe, F.
Cristiani, S.
Adibekyan, V
Allende Prieto, C.
Alibert, Yann
Barros, S. C. C.
Bouchy, F.
Bourrier, V
D'Odorico, V
Dumusque, X.
Faria, J. P.
Figueira, P.
Genova Santos, R.
Gonzalez Hernandez, J., I
Hojjatpanah, S.
Lo Curto, G.
Lavie, B.
Martins, C. J. A. P.
Martins, J. H. C.
Mehner, A.
Micela, G.
Molaro, P.
Nunes, N. J.
Poretti, E.
Seidel, J., V
Sozzetti, A.
Suarez Mascareno, A.
Udry, S.
Aliverti, M.
Affolter, M.
Alves, D.
Amate, M.
Avila, G.
Bandy, T.
Benz, W.
Bianco, A.
Broeg, C.
ASTRONOMY & ASTROPHYSICS, 2021, 646
[5] ESPRESSO reveals blueshifted neutral iron emission lines on the dayside of WASP-76 b
Silva, A. R. Costa
Demangeon, O. D. S.
Santos, N. C.
Ehrenreich, D.
Lovis, C.
Chakraborty, H.
Lendl, M.
Pepe, F.
Cristiani, S.
Rebolo, R.
Zapatero-Osorio, M. R.
Adibekyan, V.
Alibert, Y.
Allart, R.
Prieto, C. Allende
Silva, T. Azevedo
Borsa, F.
Bourrier, V.
Cristo, E.
Di Marcantonio, P.
Esparza-Borges, E.
Figueira, P.
Hernandez, J. I. Gonzalez
Herrero-Cisneros, E.
Curto, G. Lo
Martins, C. J. A. P.
Mehner, A.
Nunes, N. J.
Palle, E.
Pelletier, S.
Seidel, J. V.
Silva, A. M.
Sousa, S. G.
Sozzetti, A.
Steiner, M.
Mascareno, A. Suarez
Udry, S.
ASTRONOMY & ASTROPHYSICS, 2024, 689
[6] Characterisation of the upper atmospheres of HAT-P-32 b, WASP-69 b, GJ 1214 b, and WASP-76 b through their He I triplet absorption
Lampon, M.
Lopez-Puertas, M.
Sanz-Forcada, J.
Czesla, S.
Nortmann, L.
Casasayas-Barris, N.
Orell-Miquel, J.
Sanchez-Lopez, A.
Danielski, C.
Palle, E.
Molaverdikhani, K.
Henning, Th.
Caballero, J. A.
Amado, P. J.
Quirrenbach, A.
Reiners, A.
Ribas, I.
ASTRONOMY & ASTROPHYSICS, 2023, 673
[7] Into the storm: diving into the winds of the ultra-hot Jupiter WASP-76 b with HARPS and ESPRESSO
Seidel, J., V
Ehrenreich, D.
Allart, R.
Hoeijmakers, H. J.
Lovis, C.
Bourrier, V
Pino, L.
Wyttenbach, A.
Adibekyan, V
Alibert, Y.
Borsa, F.
Casasayas-Barris, N.
Cristiani, S.
Demangeon, O. D. S.
Di Marcantonio, P.
Figueira, P.
Gonzalez Hernandez, J., I
Lillo-Box, J.
Martins, C. J. A. P.
Mehner, A.
Molaro, P.
Nunes, N. J.
Palle, E.
Pepe, F.
Santos, N. C.
Sousa, S. G.
Sozzetti, A.
Tabernero, H. M.
Zapatero Osorio, M. R.
ASTRONOMY & ASTROPHYSICS, 2021, 653 (653)
[8] Investigation of the upper atmosphere in ultra-hot Jupiter WASP-76 b with high-resolution spectroscopy
Kawauchi, Kiyoe
Narita, Norio
Sato, Bun'ei
Kawashima, Yui
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 2022, 74 (02) : 225 - 238
[9] Atmospherix III. Estimating the C/O ratio and molecular dynamics at the limbs of WASP-76 b with SPIRou
Hood, Thea
Debras, Florian
Moutou, Claire
Klein, Baptiste
Tremblin, Pascal
Parmentier, Vivien
Carmona, Andres
Meech, Annabella
Venot, Olivia
Masson, Adrien
Petit, Pascal
Vinatier, Sandrine
Martioli, Eder
Kiefer, Flavien
Turbet, Martin
ASTRONOMY & ASTROPHYSICS, 2024, 687
[10] Spatially resolving the terminator: variation of Fe, temperature, and winds in WASP-76 b across planetary limbs and orbital phase
Gandhi, Siddharth
Kesseli, Aurora
Snellen, Ignas
Brogi, Matteo
Wardenier, Joost P.
Parmentier, Vivien
Welbanks, Luis
Savel, Arjun B.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2022, 515 (01) : 749 - 766

← 1 2 3 →