EVIDENCE FOR THE DIRECT DETECTION OF THE THERMAL SPECTRUM OF THE NON-TRANSITING HOT GAS GIANT HD 88133 b

Handle URI:
http://hdl.handle.net/10754/622061
Title:
EVIDENCE FOR THE DIRECT DETECTION OF THE THERMAL SPECTRUM OF THE NON-TRANSITING HOT GAS GIANT HD 88133 b
Authors:
Piskorz, Danielle; Benneke, Björn; Crockett, Nathan R.; Lockwood, Alexandra C.; Blake, Geoffrey A.; Barman, Travis S.; Bender, Chad F.; Bryan, Marta L.; Carr, John S.; Fischer, Debra A.; Howard, Andrew W.; Isaacson, Howard; Johnson, John A.
Abstract:
We target the thermal emission spectrum of the non-transiting gas giant HD 88133 b with high-resolution near-infrared spectroscopy, by treating the planet and its host star as a spectroscopic binary. For sufficiently deep summed flux observations of the star and planet across multiple epochs, it is possible to resolve the signal of the hot gas giant's atmosphere compared to the brighter stellar spectrum, at a level consistent with the aggregate shot noise of the full data set. To do this, we first perform a principal component analysis to remove the contribution of the Earth's atmosphere to the observed spectra. Then, we use a cross-correlation analysis to tease out the spectra of the host star and HD 88133 b to determine its orbit and identify key sources of atmospheric opacity. In total, six epochs of Keck NIRSPEC L-band observations and three epochs of Keck NIRSPEC K-band observations of the HD 88133 system were obtained. Based on an analysis of the maximum likelihood curves calculated from the multi-epoch cross-correlation of the full data set with two atmospheric models, we report the direct detection of the emission spectrum of the non-transiting exoplanet HD 88133 b and measure a radial projection of the Keplerian orbital velocity of 40 +/- 15 km s(-1), a true mass of 1.02(-0.28)(+0.61) M-J, a nearly face-on orbital inclination of 15(-5)(+60), and an atmosphere opacity structure at high dispersion dominated by water vapor. This, combined with 11 years of radial velocity measurements of the system, provides the most up-to-date ephemeris for HD 88133.
KAUST Department:
King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
Citation:
Piskorz D, Benneke B, Crockett NR, Lockwood AC, Blake GA, et al. (2016) EVIDENCE FOR THE DIRECT DETECTION OF THE THERMAL SPECTRUM OF THE NON-TRANSITING HOT GAS GIANT HD 88133 b. The Astrophysical Journal 832: 131. Available: http://dx.doi.org/10.3847/0004-637X/832/2/131.
Publisher:
American Astronomical Society
Journal:
The Astrophysical Journal
Issue Date:
23-Nov-2016
DOI:
10.3847/0004-637X/832/2/131
Type:
Article
ISSN:
1538-4357
Sponsors:
The authors would like to thank Heather Knutson for helpful discussions throughout the preparation of this manuscript. The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Maunakea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain. The data presented herein were obtained at the W.M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W.M. Keck Foundation. This work was partially supported by funding from the NSF Astronomy & Astrophysics and NASA Exoplanets Research Programs (grants AST-1109857 and NNX16AI14G, G.A. Blake P.I.), and the Center for Exoplanets and Habitable Worlds, which is supported by the Pennsylvania State Unviersity, the Eberly College of Science, and the Pennsylvania Space Grant Consortium. Basic research in infrared astrophysics at the Naval Research Laboratory is supported by 6.1 base funding. Finally, we thank an anonymous reviewer for helpful insights which improved the content of this paper.
Additional Links:
http://iopscience.iop.org/article/10.3847/0004-637X/832/2/131/meta;jsessionid=CCF06BA0F313D35E46279B97DD428F09.ip-10-40-1-105
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Full metadata record

DC FieldValue Language
dc.contributor.authorPiskorz, Danielleen
dc.contributor.authorBenneke, Björnen
dc.contributor.authorCrockett, Nathan R.en
dc.contributor.authorLockwood, Alexandra C.en
dc.contributor.authorBlake, Geoffrey A.en
dc.contributor.authorBarman, Travis S.en
dc.contributor.authorBender, Chad F.en
dc.contributor.authorBryan, Marta L.en
dc.contributor.authorCarr, John S.en
dc.contributor.authorFischer, Debra A.en
dc.contributor.authorHoward, Andrew W.en
dc.contributor.authorIsaacson, Howarden
dc.contributor.authorJohnson, John A.en
dc.date.accessioned2016-12-22T13:34:56Z-
dc.date.available2016-12-22T13:34:56Z-
dc.date.issued2016-11-23en
dc.identifier.citationPiskorz D, Benneke B, Crockett NR, Lockwood AC, Blake GA, et al. (2016) EVIDENCE FOR THE DIRECT DETECTION OF THE THERMAL SPECTRUM OF THE NON-TRANSITING HOT GAS GIANT HD 88133 b. The Astrophysical Journal 832: 131. Available: http://dx.doi.org/10.3847/0004-637X/832/2/131.en
dc.identifier.issn1538-4357en
dc.identifier.doi10.3847/0004-637X/832/2/131en
dc.identifier.urihttp://hdl.handle.net/10754/622061-
dc.description.abstractWe target the thermal emission spectrum of the non-transiting gas giant HD 88133 b with high-resolution near-infrared spectroscopy, by treating the planet and its host star as a spectroscopic binary. For sufficiently deep summed flux observations of the star and planet across multiple epochs, it is possible to resolve the signal of the hot gas giant's atmosphere compared to the brighter stellar spectrum, at a level consistent with the aggregate shot noise of the full data set. To do this, we first perform a principal component analysis to remove the contribution of the Earth's atmosphere to the observed spectra. Then, we use a cross-correlation analysis to tease out the spectra of the host star and HD 88133 b to determine its orbit and identify key sources of atmospheric opacity. In total, six epochs of Keck NIRSPEC L-band observations and three epochs of Keck NIRSPEC K-band observations of the HD 88133 system were obtained. Based on an analysis of the maximum likelihood curves calculated from the multi-epoch cross-correlation of the full data set with two atmospheric models, we report the direct detection of the emission spectrum of the non-transiting exoplanet HD 88133 b and measure a radial projection of the Keplerian orbital velocity of 40 +/- 15 km s(-1), a true mass of 1.02(-0.28)(+0.61) M-J, a nearly face-on orbital inclination of 15(-5)(+60), and an atmosphere opacity structure at high dispersion dominated by water vapor. This, combined with 11 years of radial velocity measurements of the system, provides the most up-to-date ephemeris for HD 88133.en
dc.description.sponsorshipThe authors would like to thank Heather Knutson for helpful discussions throughout the preparation of this manuscript. The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Maunakea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain. The data presented herein were obtained at the W.M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W.M. Keck Foundation. This work was partially supported by funding from the NSF Astronomy & Astrophysics and NASA Exoplanets Research Programs (grants AST-1109857 and NNX16AI14G, G.A. Blake P.I.), and the Center for Exoplanets and Habitable Worlds, which is supported by the Pennsylvania State Unviersity, the Eberly College of Science, and the Pennsylvania Space Grant Consortium. Basic research in infrared astrophysics at the Naval Research Laboratory is supported by 6.1 base funding. Finally, we thank an anonymous reviewer for helpful insights which improved the content of this paper.en
dc.publisherAmerican Astronomical Societyen
dc.relation.urlhttp://iopscience.iop.org/article/10.3847/0004-637X/832/2/131/meta;jsessionid=CCF06BA0F313D35E46279B97DD428F09.ip-10-40-1-105en
dc.rightsArchived with thanks to Astrophysical Journalen
dc.subjectplanets and satellites: atmospheresen
dc.subjecttechniques: spectroscopicen
dc.titleEVIDENCE FOR THE DIRECT DETECTION OF THE THERMAL SPECTRUM OF THE NON-TRANSITING HOT GAS GIANT HD 88133 ben
dc.typeArticleen
dc.contributor.departmentKing Abdullah University of Science and Technology, Thuwal, Saudi Arabiaen
dc.identifier.journalThe Astrophysical Journalen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionDivision of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, United Statesen
dc.contributor.institutionLunar and Planetary Laboratory, University of Arizona, Tuscon, AZ, United Statesen
dc.contributor.institutionDepartment of Astronomy and Steward Observatory, University of Arizona, Tuscon, AZ, United Statesen
dc.contributor.institutionCahill Center for Astronomy and Astrophysics, California Institute of Technology, Pasadena, CA, United Statesen
dc.contributor.institutionNaval Research Laboratory, Washington, DC, United Statesen
dc.contributor.institutionDepartment of Astronomy, Yale University, 260 Whitney Avenue, New Haven, CT, United Statesen
dc.contributor.institutionDepartment of Astronomy, University of California Berkeley, Berkeley, CA, United Statesen
dc.contributor.institutionHarvard-Smithsonian Center for Astrophysics, Institute for Theory and Computation, Cambridge, MA, United Statesen
kaust.authorLockwood, Alexandra C.en
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