{"corpus_id":258034961,"paper_sha":"d8f6ac5141b43a67c2e1427788c2f6cff99ff6cd","doi":"10.1093/mnras/stad1010","arxiv_id":null,"pmid":null,"pmcid":null,"mag_id":null,"dblp_id":null,"acl_id":null,"title":"HST PanCET Program: A flat optical transmission spectrum for the Hot Jupiter WASP-101b","year":2023,"publication_date":"2023-04-06","venue":"Monthly notices of the Royal Astronomical Society","journal":{"name":"Monthly Notices of the Royal Astronomical Society","pages":null,"volume":null},"journal_issn":null,"journal_title":null,"publication_types":["JournalArticle"],"pubmed_pub_types":null,"s2_fields_of_study":[],"reference_count":0,"citation_count":5,"influential_citation_count":0,"is_open_access":true,"arxiv_categories":null,"arxiv_license":null,"arxiv_journal_ref":null,"mesh_headings":null,"chemicals":null,"comments_corrections":null,"source_flags":1,"s2_open_access_pdf_url":"https://backend.orbit.dtu.dk/ws/files/325046652/stad1411.pdf","s2_open_access_landing_url":"https://www.semanticscholar.org/paper/d8f6ac5141b43a67c2e1427788c2f6cff99ff6cd","s2_open_access_license":"other-oa","s2_open_access_status":"GREEN","pmc_open_access_pdf_url":null,"pmc_open_access_landing_url":null,"pmc_open_access_license":null,"pmc_open_access_status":null,"unpaywall_open_access_pdf_url":null,"unpaywall_open_access_landing_url":null,"unpaywall_open_access_license":null,"unpaywall_open_access_status":null,"abstract":"\n We present an optical transmission spectrum of the hot Jupiter WASP-101b. We observed three primary transits with HST/STIS, covering a wavelength range from 0.3 to 1 μm. The observations suffer from significant systematics that we model using Gaussian Processes. Kernel selection for the Gaussian Processes is performed in a data-driven approach through Bayesian model comparison. We find a flat and featureless transmission spectrum, corroborating a previous measurement obtained with HST/WFC3 in the 1 - 1.7 μm range. The spectrum is consistent with high-altitude clouds located at less than 100 μbar. This cloud layer completely blocks our view into deeper parts of the atmosphere and makes WASP-101b the cloudiest gas giant observed so far. We compute a series of temperature-pressure profiles for WASP-101b and compare these to condensation curves for cloud particles, which match clouds composed of silicates. We also include 13 transits observed with TESS and use these to refine system parameters.","claims":[{"public_id":"cl_0a371c1bd2ea2d654c94304a603bc422","status":"active","text":"An optical transmission spectrum of WASP-101b spanning 0.3 to 1 μm was obtained from three HST/STIS primary transits.","confidence":0.98,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_0a371c1bd2ea2d654c94304a603bc422"},{"public_id":"cl_5978b7bf0b5a100bc0df3a6ed2883b42","status":"active","text":"Gaussian Processes with data-driven kernel selection via Bayesian model comparison were used to model significant observational systematics.","confidence":0.96,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous 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