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The stable climate of KELT-9b
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dc.contributor.author | Jones, K. | |
dc.contributor.author | Morris, B. M. | |
dc.contributor.author | Demory, B.-O. | |
dc.contributor.author | Heng, K. | |
dc.contributor.author | Hooton, M. J. | |
dc.contributor.author | Billot, N. | |
dc.contributor.author | Ehrenreich, D. | |
dc.contributor.author | Hoyer, S. | |
dc.contributor.author | Simon, A. E. | |
dc.contributor.author | Lendl, M. | |
dc.contributor.author | Demangeon, O. D. S. | |
dc.contributor.author | Sousa, S. G. | |
dc.contributor.author | Bonfanti, A. | |
dc.contributor.author | Wilson, T. G. | |
dc.contributor.author | Salmon, S. | |
dc.contributor.author | Csizmadia, Sz. | |
dc.contributor.author | Parviainen, H. | |
dc.contributor.author | Bruno, G. | |
dc.contributor.author | Alibert, Y. | |
dc.contributor.author | Alonso, R. | |
dc.contributor.author | Anglada, G. | |
dc.contributor.author | Bárczy, T. | |
dc.contributor.author | Barrado, D. | |
dc.contributor.author | Barros, S. C. C. | |
dc.contributor.author | Baumjohann, W. | |
dc.contributor.author | Beck, M. | |
dc.contributor.author | Beck, T. | |
dc.contributor.author | Benz, W. | |
dc.contributor.author | Bonfils, X. | |
dc.contributor.author | Brandeker, A. | |
dc.contributor.author | Broeg, C. | |
dc.contributor.author | Cabrera, J. | |
dc.contributor.author | Charnoz, S. | |
dc.contributor.author | Collier Cameron, A. | |
dc.contributor.author | Davies, M. B. | |
dc.contributor.author | Deleuil, M. | |
dc.contributor.author | Deline, A. | |
dc.contributor.author | Delrez, L. | |
dc.contributor.author | Erikson, A. | |
dc.contributor.author | Fortier, A. | |
dc.contributor.author | Fossati, L. | |
dc.contributor.author | Fridlund, M. | |
dc.contributor.author | Gandolfi, D. | |
dc.contributor.author | Gillon, M. | |
dc.contributor.author | Güdel, M. | |
dc.contributor.author | Isaak, K. G. | |
dc.contributor.author | Kiss, L. L. | |
dc.contributor.author | Laskar, J. | |
dc.contributor.author | Lecavelier des Etangs, A. | |
dc.contributor.author | Lovis, C. | |
dc.contributor.author | Magrin, D. | |
dc.contributor.author | Maxted, P. F. L. | |
dc.contributor.author | Nascimbeni, V. | |
dc.contributor.author | Olofsson, G. | |
dc.contributor.author | Ottensamer, R. | |
dc.contributor.author | Pagano, I. | |
dc.contributor.author | Pallé, E. | |
dc.contributor.author | Peter, G. | |
dc.contributor.author | Piotto, G. | |
dc.contributor.author | Pollacco, D. | |
dc.contributor.author | Queloz, D. | |
dc.contributor.author | Ragazzoni, R. | |
dc.contributor.author | Rando, N. | |
dc.contributor.author | Ratti, F. | |
dc.contributor.author | Rauer, H. | |
dc.contributor.author | Reimers, C. | |
dc.contributor.author | Ribas, I. | |
dc.contributor.author | Santos, N. C. | |
dc.contributor.author | Scandariato, G. | |
dc.contributor.author | Ségransan, D. | |
dc.contributor.author | Smith, A. M. S. | |
dc.contributor.author | Steller, M. | |
dc.contributor.author | Szabó, Gy. M. | |
dc.contributor.author | Thomas, N. | |
dc.contributor.author | Udry, S. | |
dc.contributor.author | Van Grootel, V. | |
dc.contributor.author | Walter, I. | |
dc.contributor.author | Walton, N. A. | |
dc.contributor.author | Wang Jungo, W. | |
dc.date.accessioned | 2023-01-19T12:30:12Z | |
dc.date.available | 2023-01-19T12:30:12Z | |
dc.date.issued | 2022-10-19 | |
dc.identifier | 282962782 | |
dc.identifier | 5f0fac72-8212-4141-8e84-ae691414797b | |
dc.identifier | 000869898200006 | |
dc.identifier | 85166667721 | |
dc.identifier.citation | Jones , K , Morris , B M , Demory , B-O , Heng , K , Hooton , M J , Billot , N , Ehrenreich , D , Hoyer , S , Simon , A E , Lendl , M , Demangeon , O D S , Sousa , S G , Bonfanti , A , Wilson , T G , Salmon , S , Csizmadia , S , Parviainen , H , Bruno , G , Alibert , Y , Alonso , R , Anglada , G , Bárczy , T , Barrado , D , Barros , S C C , Baumjohann , W , Beck , M , Beck , T , Benz , W , Bonfils , X , Brandeker , A , Broeg , C , Cabrera , J , Charnoz , S , Collier Cameron , A , Davies , M B , Deleuil , M , Deline , A , Delrez , L , Erikson , A , Fortier , A , Fossati , L , Fridlund , M , Gandolfi , D , Gillon , M , Güdel , M , Isaak , K G , Kiss , L L , Laskar , J , Lecavelier des Etangs , A , Lovis , C , Magrin , D , Maxted , P F L , Nascimbeni , V , Olofsson , G , Ottensamer , R , Pagano , I , Pallé , E , Peter , G , Piotto , G , Pollacco , D , Queloz , D , Ragazzoni , R , Rando , N , Ratti , F , Rauer , H , Reimers , C , Ribas , I , Santos , N C , Scandariato , G , Ségransan , D , Smith , A M S , Steller , M , Szabó , G M , Thomas , N , Udry , S , Van Grootel , V , Walter , I , Walton , N A & Wang Jungo , W 2022 , ' The stable climate of KELT-9b ' , Astronomy & Astrophysics , vol. 666 , A118 . https://doi.org/10.1051/0004-6361/202243823 | en |
dc.identifier.issn | 0004-6361 | |
dc.identifier.other | ArXiv: http://arxiv.org/abs/2208.04818v1 | |
dc.identifier.other | RIS: urn:C11248EC55564B3491B1937E695F89B6 | |
dc.identifier.other | RIS: 10.105100046361202243823 | |
dc.identifier.other | ORCID: /0000-0002-8863-7828/work/127066042 | |
dc.identifier.other | ORCID: /0000-0001-8749-1962/work/127066175 | |
dc.identifier.uri | https://hdl.handle.net/10023/26780 | |
dc.description | Funding: A.C.C. and T.W. acknowledge support from STFC consolidated grant numbers ST/R000824/1 and ST/V000861/1, and UKSA grant number ST/R003203/1. | en |
dc.description.abstract | Even among the most irradiated gas giants, so-called ultra-hot Jupiters, KELT-9b stands out as the hottest planet thus far discovered with a dayside temperature of over 4500 K. At these extreme irradiation levels, we expect an increase in heat redistribution efficiency and a low Bond albedo owed to an extended atmosphere with molecular hydrogen dissociation occurring on the planetary dayside. We present new photometric observations of the KELT-9 system throughout 4 full orbits and 9 separate occultations obtained by the 30 cm space telescope CHEOPS. The CHEOPS bandpass, located at optical wavelengths, captures the peak of the thermal emission spectrum of KELT-9b. In this work we simultaneously analyse CHEOPS phase curves along with public phase curves from TESS and Spitzer to infer joint constraints on the phase curve variation, gravity-darkened transits, and occultation depth in three bandpasses, as well as derive 2D temperature maps of the atmosphere at three different depths. We find a day-night heat redistribution efficiency of ~0.3 which confirms expectations of enhanced energy transfer to the planetary nightside due to dissociation and recombination of molecular hydrogen. We also calculate a Bond albedo consistent with zero. We find no evidence of variability of the brightness temperature of the planet, excluding variability greater than 1%. | |
dc.format.extent | 19 | |
dc.format.extent | 2020110 | |
dc.language.iso | eng | |
dc.relation.ispartof | Astronomy & Astrophysics | en |
dc.subject | Techniques: photometric | en |
dc.subject | Instrumentation: photometers | en |
dc.subject | Planets and satellites: atmospheres | en |
dc.subject | Planets and satellites: gaseous planets | en |
dc.subject | Eclipses | en |
dc.subject | Occultations | en |
dc.subject | QB Astronomy | en |
dc.subject | QC Physics | en |
dc.subject | 3rd-DAS | en |
dc.subject | MCC | en |
dc.subject.lcc | QB | en |
dc.subject.lcc | QC | en |
dc.title | The stable climate of KELT-9b | en |
dc.type | Journal article | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.contributor.institution | University of St Andrews. St Andrews Centre for Exoplanet Science | en |
dc.identifier.doi | https://doi.org/10.1051/0004-6361/202243823 | |
dc.description.status | Peer reviewed | en |
dc.identifier.url | http://arxiv.org/abs/2208.04818 | en |
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