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A broadband thermal emission spectrum of the ultra-hot Jupiter WASP-18b
dc.contributor.author | Coulombe, Louis-Philippe | |
dc.contributor.author | Benneke, Björn | |
dc.contributor.author | Challener, Ryan | |
dc.contributor.author | Piette, Anjali A. A. | |
dc.contributor.author | Wiser, Lindsey S. | |
dc.contributor.author | Mansfield, Megan | |
dc.contributor.author | MacDonald, Ryan J. | |
dc.contributor.author | Beltz, Hayley | |
dc.contributor.author | Feinstein, Adina D. | |
dc.contributor.author | Radica, Michael | |
dc.contributor.author | Savel, Arjun B. | |
dc.contributor.author | Dos Santos, Leonardo A. | |
dc.contributor.author | Bean, Jacob L. | |
dc.contributor.author | Parmentier, Vivien | |
dc.contributor.author | Wong, Ian | |
dc.contributor.author | Rauscher, Emily | |
dc.contributor.author | Komacek, Thaddeus D. | |
dc.contributor.author | Kempton, Eliza M.-R. | |
dc.contributor.author | Tan, Xianyu | |
dc.contributor.author | Hammond, Mark | |
dc.contributor.author | Lewis, Neil T. | |
dc.contributor.author | Line, Michael R. | |
dc.contributor.author | Lee, Elspeth K. H. | |
dc.contributor.author | Shivkumar, Hinna | |
dc.contributor.author | Crossfield, Ian J. M. | |
dc.contributor.author | Nixon, Matthew C. | |
dc.contributor.author | Rackham, Benjamin V. | |
dc.contributor.author | Wakeford, Hannah R. | |
dc.contributor.author | Welbanks, Luis | |
dc.contributor.author | Zhang, Xi | |
dc.contributor.author | Batalha, Natalie M. | |
dc.contributor.author | Berta-Thompson, Zachory K. | |
dc.contributor.author | Changeat, Quentin | |
dc.contributor.author | Désert, Jean-Michel | |
dc.contributor.author | Espinoza, Néstor | |
dc.contributor.author | Goyal, Jayesh M. | |
dc.contributor.author | Harrington, Joseph | |
dc.contributor.author | Knutson, Heather A. | |
dc.contributor.author | Kreidberg, Laura | |
dc.contributor.author | López-Morales, Mercedes | |
dc.contributor.author | Shporer, Avi | |
dc.contributor.author | Sing, David K. | |
dc.contributor.author | Stevenson, Kevin B. | |
dc.contributor.author | Aggarwal, Keshav | |
dc.contributor.author | Ahrer, Eva-Maria | |
dc.contributor.author | Alam, Munazza K. | |
dc.contributor.author | Bell, Taylor J. | |
dc.contributor.author | Blecic, Jasmina | |
dc.contributor.author | Caceres, Claudio | |
dc.contributor.author | Carter, Aarynn L. | |
dc.contributor.author | Casewell, Sarah L. | |
dc.contributor.author | Crouzet, Nicolas | |
dc.contributor.author | Cubillos, Patricio E. | |
dc.contributor.author | Decin, Leen | |
dc.contributor.author | Fortney, Jonathan J. | |
dc.contributor.author | Gibson, Neale P. | |
dc.contributor.author | Heng, Kevin | |
dc.contributor.author | Henning, Thomas | |
dc.contributor.author | Iro, Nicolas | |
dc.contributor.author | Kendrew, Sarah | |
dc.contributor.author | Lagage, Pierre-Olivier | |
dc.contributor.author | Leconte, Jérémy | |
dc.contributor.author | Lendl, Monika | |
dc.contributor.author | Lothringer, Joshua D. | |
dc.contributor.author | Mancini, Luigi | |
dc.contributor.author | Mikal-Evans, Thomas | |
dc.contributor.author | Molaverdikhani, Karan | |
dc.contributor.author | Nikolov, Nikolay K. | |
dc.contributor.author | Ohno, Kazumasa | |
dc.contributor.author | Palle, Enric | |
dc.contributor.author | Piaulet, Caroline | |
dc.contributor.author | Redfield, Seth | |
dc.contributor.author | Roy, Pierre-Alexis | |
dc.contributor.author | Tsai, Shang-Min | |
dc.contributor.author | Venot, Olivia | |
dc.contributor.author | Wheatley, Peter J. | |
dc.date.accessioned | 2024-05-28T18:40:59Z | |
dc.date.available | 2024-05-28T18:40:59Z | |
dc.date.issued | 2023-05-31 | |
dc.identifier.citation | Coulombe LP, Benneke B, Challener R, Piette AAA, Wiser LS, Mansfield M, MacDonald RJ, Beltz H, Feinstein AD, Radica M, Savel AB, Dos Santos LA, Bean JL, Parmentier V, Wong I, Rauscher E, Komacek TD, Kempton EM, Tan X, Hammond M, Lewis NT, Line MR, Lee EKH, Shivkumar H, Crossfield IJM, Nixon MC, Rackham BV, Wakeford HR, Welbanks L, Zhang X, Batalha NM, Berta-Thompson ZK, Changeat Q, Désert JM, Espinoza N, Goyal JM, Harrington J, Knutson HA, Kreidberg L, López-Morales M, Shporer A, Sing DK, Stevenson KB, Aggarwal K, Ahrer EM, Alam MK, Bell TJ, Blecic J, Caceres C, Carter AL, Casewell SL, Crouzet N, Cubillos PE, Decin L, Fortney JJ, Gibson NP, Heng K, Henning T, Iro N, Kendrew S, Lagage PO, Leconte J, Lendl M, Lothringer JD, Mancini L, Mikal-Evans T, Molaverdikhani K, Nikolov NK, Ohno K, Palle E, Piaulet C, Redfield S, Roy PA, Tsai SM, Venot O, Wheatley PJ. A broadband thermal emission spectrum of the ultra-hot Jupiter WASP-18b. Nature. 2023 Aug;620(7973):292-298. doi: 10.1038/s41586-023-06230-1. Epub 2023 May 31. PMID: 37257843; PMCID: PMC10412449 | en_US |
dc.identifier.uri | https://hdl.handle.net/1808/35071 | |
dc.description.abstract | Close-in giant exoplanets with temperatures greater than 2,000 K (‘ultra-hot Jupiters’) have been the subject of extensive efforts to determine their atmospheric properties using thermal emission measurements from the Hubble Space Telescope (HST) and Spitzer Space Telescope1–3. However, previous studies have yielded inconsistent results because the small sizes of the spectral features and the limited information content of the data resulted in high sensitivity to the varying assumptions made in the treatment of instrument systematics and the atmospheric retrieval analysis3–12. Here we present a dayside thermal emission spectrum of the ultra-hot Jupiter WASP-18b obtained with the NIRISS13 instrument on the JWST. The data span 0.85 to 2.85 μm in wavelength at an average resolving power of 400 and exhibit minimal systematics. The spectrum shows three water emission features (at >6σ confidence) and evidence for optical opacity, possibly attributable to H−, TiO and VO (combined significance of 3.8σ). Models that fit the data require a thermal inversion, molecular dissociation as predicted by chemical equilibrium, a solar heavy-element abundance (‘metallicity’, M/H=1.03+1.11−0.51 times solar) and a carbon-to-oxygen (C/O) ratio less than unity. The data also yield a dayside brightness temperature map, which shows a peak in temperature near the substellar point that decreases steeply and symmetrically with longitude towards the terminators. | en_US |
dc.publisher | Nature Research | en_US |
dc.rights | Copyright © The Author(s) 2023 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. | en_US |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | en_US |
dc.subject | Exoplanets | en_US |
dc.subject | Atmospheric chemistry | en_US |
dc.subject | Atmospheric dynamics | en_US |
dc.title | A broadband thermal emission spectrum of the ultra-hot Jupiter WASP-18b | en_US |
dc.type | Article | en_US |
kusw.kudepartment | Physics & Astronomy | en_US |
dc.identifier.doi | 10.1038/s41586-023-06230-1 | en_US |
kusw.oaversion | Scholarly/refereed, publisher version | en_US |
kusw.oapolicy | This item meets KU Open Access policy criteria. | en_US |
dc.identifier.pmid | PMC10412449 | en_US |
dc.rights.accessrights | openAccess | en_US |
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Except where otherwise noted, this item's license is described as: Copyright © The Author(s) 2023
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.