Ground-based near-UV observations of 15 transiting exoplanets: constraints on their atmospheres and no evidence for asymmetrical transits

Persistent Link:
http://hdl.handle.net/10150/614988
Title:
Ground-based near-UV observations of 15 transiting exoplanets: constraints on their atmospheres and no evidence for asymmetrical transits
Author:
Turner, Jake D.; Pearson, Kyle A.; Biddle, Lauren I.; Smart, Brianna M.; Zellem, Robert T.; Teske, Johanna K.; Hardegree-Ullman, Kevin K.; Griffith, Caitlin C.; Leiter, Robin M.; Cates, Ian T.; Nieberding, Megan N.; Smith, Carter-Thaxton W.; Thompson, Robert M.; Hofmann, Ryan; Berube, Michael P.; Nguyen, Chi H.; Small, Lindsay C.; Guvenen, Blythe C.; Richardson, Logan; McGraw, Allison; Raphael, Brandon; Crawford, Benjamin E.; Robertson, Amy N.; Tombleson, Ryan; Carleton, Timothy M.; Towner, Allison P.M.; Walker-LaFollette, Amanda M.; Hume, Jeffrey R.; Watson, Zachary T.; Jones, Christen K.; Lichtenberger, Matthew J.; Hoglund, Shelby R.; Cook, Kendall L.; Crossen, Cory A.; Jorgensen, Curtis R.; Romine, James M.; Thompson, Alejandro R.; Villegas, Christian F.; Wilson, Ashley A.; Sanford, Brent; Taylor, Joanna M.; Henz, Triana N.
Affiliation:
Univ Arizona, Lunar & Planetary Lab; Univ Arizona, Steward Observ
Issue Date:
2016-06-11
Publisher:
OXFORD UNIV PRESS
Citation:
Ground-based near-UV observations of 15 transiting exoplanets: constraints on their atmospheres and no evidence for asymmetrical transits 2016, 459 (1):789 Monthly Notices of the Royal Astronomical Society
Journal:
Monthly Notices of the Royal Astronomical Society
Rights:
© 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society
Collection Information:
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
Abstract:
Transits of exoplanets observed in the near-UV have been used to study the scattering properties of their atmospheres and possible star-planet interactions. We observed the primary transits of 15 exoplanets (CoRoT-1b, GJ436b, HAT-P-1b, HAT-P-13b, HAT-P-16b, HAT-P-22b, TrES-2b, TrES-4b, WASP-1b, WASP-12b, WASP-33b, WASP-36b, WASP-44b, WASP-48b, and WASP-77Ab) in the near-UV and several optical photometric bands to update their planetary parameters, ephemerides, search for a wavelength dependence in their transit depths to constrain their atmospheres, and determine if asymmetries are visible in their light curves. Here, we present the first ground-based near-UV light curves for 12 of the targets (CoRoT-1b, GJ436b, HAT-P-1b, HAT-P-13b, HAT-P-22b, TrES-2b, TrES-4b, WASP-1b, WASP-33b, WASP-36b, WASP-48b, and WASP-77Ab). We find that none of the near-UV transits exhibit any non-spherical asymmetries, this result is consistent with recent theoretical predictions by Ben-Jaffel et al. and Turner et al. The multiwavelength photometry indicates a constant transit depth from near-UV to optical wavelengths in 10 targets (suggestive of clouds), and a varying transit depth with wavelength in 5 targets (hinting at Rayleigh or aerosol scattering in their atmospheres). We also present the first detection of a smaller near-UV transit depth than that measured in the optical in WASP-1b and a possible opacity source that can cause such radius variations is currently unknown. WASP-36b also exhibits a smaller near-UV transit depth at 2.6 sigma. Further observations are encouraged to confirm the transit depth variations seen in this study.
ISSN:
0035-8711; 1365-2966
DOI:
10.1093/mnras/stw574
Version:
Final published version
Sponsors:
NASA's Planetary Atmospheres programme; Virginia Space Grant Consortium Graduate Research Fellowship Program; National Science Foundation [DGE-1315231]; University of Arizona Astronomy Club; Steward Observatory TAC; Lunar and Planetary Laboratory
Additional Links:
http://mnras.oxfordjournals.org/lookup/doi/10.1093/mnras/stw574

Full metadata record

DC FieldValue Language
dc.contributor.authorTurner, Jake D.en
dc.contributor.authorPearson, Kyle A.en
dc.contributor.authorBiddle, Lauren I.en
dc.contributor.authorSmart, Brianna M.en
dc.contributor.authorZellem, Robert T.en
dc.contributor.authorTeske, Johanna K.en
dc.contributor.authorHardegree-Ullman, Kevin K.en
dc.contributor.authorGriffith, Caitlin C.en
dc.contributor.authorLeiter, Robin M.en
dc.contributor.authorCates, Ian T.en
dc.contributor.authorNieberding, Megan N.en
dc.contributor.authorSmith, Carter-Thaxton W.en
dc.contributor.authorThompson, Robert M.en
dc.contributor.authorHofmann, Ryanen
dc.contributor.authorBerube, Michael P.en
dc.contributor.authorNguyen, Chi H.en
dc.contributor.authorSmall, Lindsay C.en
dc.contributor.authorGuvenen, Blythe C.en
dc.contributor.authorRichardson, Loganen
dc.contributor.authorMcGraw, Allisonen
dc.contributor.authorRaphael, Brandonen
dc.contributor.authorCrawford, Benjamin E.en
dc.contributor.authorRobertson, Amy N.en
dc.contributor.authorTombleson, Ryanen
dc.contributor.authorCarleton, Timothy M.en
dc.contributor.authorTowner, Allison P.M.en
dc.contributor.authorWalker-LaFollette, Amanda M.en
dc.contributor.authorHume, Jeffrey R.en
dc.contributor.authorWatson, Zachary T.en
dc.contributor.authorJones, Christen K.en
dc.contributor.authorLichtenberger, Matthew J.en
dc.contributor.authorHoglund, Shelby R.en
dc.contributor.authorCook, Kendall L.en
dc.contributor.authorCrossen, Cory A.en
dc.contributor.authorJorgensen, Curtis R.en
dc.contributor.authorRomine, James M.en
dc.contributor.authorThompson, Alejandro R.en
dc.contributor.authorVillegas, Christian F.en
dc.contributor.authorWilson, Ashley A.en
dc.contributor.authorSanford, Brenten
dc.contributor.authorTaylor, Joanna M.en
dc.contributor.authorHenz, Triana N.en
dc.date.accessioned2016-06-29T01:30:43Z-
dc.date.available2016-06-29T01:30:43Z-
dc.date.issued2016-06-11-
dc.identifier.citationGround-based near-UV observations of 15 transiting exoplanets: constraints on their atmospheres and no evidence for asymmetrical transits 2016, 459 (1):789 Monthly Notices of the Royal Astronomical Societyen
dc.identifier.issn0035-8711-
dc.identifier.issn1365-2966-
dc.identifier.doi10.1093/mnras/stw574-
dc.identifier.urihttp://hdl.handle.net/10150/614988-
dc.description.abstractTransits of exoplanets observed in the near-UV have been used to study the scattering properties of their atmospheres and possible star-planet interactions. We observed the primary transits of 15 exoplanets (CoRoT-1b, GJ436b, HAT-P-1b, HAT-P-13b, HAT-P-16b, HAT-P-22b, TrES-2b, TrES-4b, WASP-1b, WASP-12b, WASP-33b, WASP-36b, WASP-44b, WASP-48b, and WASP-77Ab) in the near-UV and several optical photometric bands to update their planetary parameters, ephemerides, search for a wavelength dependence in their transit depths to constrain their atmospheres, and determine if asymmetries are visible in their light curves. Here, we present the first ground-based near-UV light curves for 12 of the targets (CoRoT-1b, GJ436b, HAT-P-1b, HAT-P-13b, HAT-P-22b, TrES-2b, TrES-4b, WASP-1b, WASP-33b, WASP-36b, WASP-48b, and WASP-77Ab). We find that none of the near-UV transits exhibit any non-spherical asymmetries, this result is consistent with recent theoretical predictions by Ben-Jaffel et al. and Turner et al. The multiwavelength photometry indicates a constant transit depth from near-UV to optical wavelengths in 10 targets (suggestive of clouds), and a varying transit depth with wavelength in 5 targets (hinting at Rayleigh or aerosol scattering in their atmospheres). We also present the first detection of a smaller near-UV transit depth than that measured in the optical in WASP-1b and a possible opacity source that can cause such radius variations is currently unknown. WASP-36b also exhibits a smaller near-UV transit depth at 2.6 sigma. Further observations are encouraged to confirm the transit depth variations seen in this study.en
dc.description.sponsorshipNASA's Planetary Atmospheres programme; Virginia Space Grant Consortium Graduate Research Fellowship Program; National Science Foundation [DGE-1315231]; University of Arizona Astronomy Club; Steward Observatory TAC; Lunar and Planetary Laboratoryen
dc.language.isoenen
dc.publisherOXFORD UNIV PRESSen
dc.relation.urlhttp://mnras.oxfordjournals.org/lookup/doi/10.1093/mnras/stw574en
dc.rights© 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Societyen
dc.titleGround-based near-UV observations of 15 transiting exoplanets: constraints on their atmospheres and no evidence for asymmetrical transitsen
dc.typeArticleen
dc.contributor.departmentUniv Arizona, Lunar & Planetary Laben
dc.contributor.departmentUniv Arizona, Steward Observen
dc.identifier.journalMonthly Notices of the Royal Astronomical Societyen
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en
dc.eprint.versionFinal published versionen
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