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dc.contributor.authorPai Asnodkar, A.
dc.contributor.authorWang, J.
dc.contributor.authorGaudi, B.S.
dc.contributor.authorCauley, P.W.
dc.contributor.authorEastman, J.D.
dc.contributor.authorIlyin, I.
dc.contributor.authorStrassmeier, K.
dc.contributor.authorBeatty, T.
dc.date.accessioned2022-03-17T01:56:44Z
dc.date.available2022-03-17T01:56:44Z
dc.date.issued2022
dc.identifier.citationPai Asnodkar, A., Wang, J., Gaudi, B. S., Cauley, P. W., Eastman, J. D., Ilyin, I., Strassmeier, K., & Beatty, T. (2022). KELT-9 as an Eclipsing Double-lined Spectroscopic Binary: A Unique and Self-consistent Solution to the System. Astronomical Journal.
dc.identifier.issn0004-6256
dc.identifier.doi10.3847/1538-3881/ac32c7
dc.identifier.urihttp://hdl.handle.net/10150/663555
dc.description.abstractTransiting hot Jupiters present a unique opportunity to measure absolute planetary masses due to the magnitude of their radial velocity signals and known orbital inclination. Measuring planet mass is critical to understanding atmospheric dynamics and escape under extreme stellar irradiation. Here we present the ultrahot Jupiter system KELT-9 as a double-lined spectroscopic binary. This allows us to directly and empirically constrain the mass of the star and its planetary companion without reference to any theoretical stellar evolutionary models or empirical stellar scaling relations. Using data from the PEPSI, HARPS-N, and TRES spectrographs across multiple epochs, we apply least-squares deconvolution to measure out-of-transit stellar radial velocities. With the PEPSI and HARPS-N data sets, we measure in-transit planet radial velocities using transmission spectroscopy. By fitting the circular orbital solution that captures these Keplerian motions, we recover a planetary dynamical mass of 2.17 ± 0.56 M J and stellar dynamical mass of 2.11 ± 0.78 M o˙, both of which agree with the discovery paper. Furthermore, we argue that this system, as well as systems like it, are highly overconstrained, providing multiple independent avenues for empirically cross-validating model-independent solutions to the system parameters. We also discuss the implications of this revised mass for studies of atmospheric escape. © 2022. The Author(s). Published by the American Astronomical Society..
dc.language.isoen
dc.publisherAmerican Astronomical Society
dc.rightsCopyright © 2022. The Author(s). Published by the American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence.
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleKELT-9 as an Eclipsing Double-lined Spectroscopic Binary: A Unique and Self-consistent Solution to the System
dc.typeArticle
dc.typetext
dc.contributor.departmentDepartment of Astronomy and Steward Observatory, University of Arizona
dc.identifier.journalAstronomical Journal
dc.description.noteOpen access article
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.
dc.eprint.versionFinal published version
dc.source.journaltitleAstronomical Journal
refterms.dateFOA2022-03-17T01:56:44Z


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Copyright © 2022. The Author(s). Published by the American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence.
Except where otherwise noted, this item's license is described as Copyright © 2022. The Author(s). Published by the American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence.