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TESS delivers its first Earth-sized planet and a warm sub-Neptune

dc.contributor.authorDragomir, Diana
dc.contributor.authorGünther, Maximilian N.
dc.contributor.authorBurt, Jennifer A.
dc.contributor.authorHuang, Chelsea
dc.contributor.authorMatthews, Elisabeth
dc.contributor.authorRicker, George R.
dc.contributor.authorVanderspek, Roland K.
dc.contributor.authorSeager, Sara
dc.contributor.authorFrancis, James
dc.contributor.authorGoeke, Robert F.
dc.contributor.authorSha, Lizhou
dc.contributor.authorShporer, Avi
dc.contributor.authorGarcia Soto, Aylin
dc.contributor.authorVillanueva, Steven
dc.contributor.authorZhan, Zhuchang
dc.date.accessioned2020-04-17T15:02:46Z
dc.date.available2020-04-17T15:02:46Z
dc.date.issued2019-04
dc.identifier.issn2041-8213
dc.identifier.issn2041-8205
dc.identifier.urihttps://hdl.handle.net/1721.1/124719
dc.description.abstract© 2019. The American Astronomical Society. All rights reserved.. The future of exoplanet science is bright, as Transiting Exoplanet Survey Satellite (TESS) once again demonstrates with the discovery of its longest-period confirmed planet to date. We hereby present HD 21749b (TOI 186.01), a sub-Neptune in a 36 day orbit around a bright (V = 8.1) nearby (16 pc) K4.5 dwarf. TESS measures HD 21749b to be R ⊕, and combined archival and follow-up precision radial velocity data put the mass of the planet at M ⊕. HD 21749b contributes to the TESS Level 1 Science Requirement of providing 50 transiting planets smaller than 4 R ⊕ with measured masses. Furthermore, we report the discovery of HD 21749c (TOI 186.02), the first Earth-sized () planet from TESS. The HD 21749 system is a prime target for comparative studies of planetary composition and architecture in multi-planet systems.en_US
dc.description.sponsorshipNASA Hubble Fellowship (grant no. HST-HF2-51372.001-A)en_US
dc.description.sponsorshipNASA Hubble Fellowship (grant no. HST-HF2-51399.001-A)en_US
dc.language.isoen
dc.publisherAmerican Astronomical Societyen_US
dc.relation.isversionof10.3847/2041-8213/AB12EDen_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceThe American Astronomical Societyen_US
dc.titleTESS delivers its first Earth-sized planet and a warm sub-Neptuneen_US
dc.typeArticleen_US
dc.identifier.citationDragomir, Diana, et al., "TESS delivers its first Earth-sized planet and a warm sub-Neptune." Astrophysical journal. Letters 875, 2 (April 2019): letter 7 doi 10.3847/2041-8213/AB12ED ©2019 Author(s)en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Physicsen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciencesen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Aeronautics and Astronauticsen_US
dc.contributor.departmentMIT Kavli Institute for Astrophysics and Space Researchen_US
dc.relation.journalAstrophysical journal. Lettersen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dc.date.updated2020-04-09T16:37:00Z
dspace.orderedauthorsDiana Dragomir ; Johanna Teske ; Maximilian N. Günther ; Damien Ségransan ; Jennifer A. Burt ; Chelsea X. Huang ; Andrew Vanderburg ; Elisabeth Matthews ; Xavier Dumusque ; Keivan G. Stassun ; Joshua Pepper ; George R. Ricker ; Roland Vanderspek ; David W. Latham ; Sara Seager ; Joshua N. Winn ; Jon M. Jenkins ; Thomas Beatty ; François Bouchy ; Timothy M. Brown ; R. Paul Butler ; David R. Ciardi ; Jeffrey D. Crane ; Jason D. Eastman ; Luca Fossati ; Jim Francis ; Benjamin J. Fulton ; B. Scott Gaudi ; Robert F. Goeke ; David James ; Todd C. Klaus ; Rudolf B. Kuhn ; Christophe Lovis ; Michael B. Lund ; Scott McDermott ; Martin Paegert ; Francesco Pepe ; Joseph E. Rodriguez ; Lizhou Sha ; Stephen A. Shectman ; Avi Shporer ; Robert J. Siverd ; Aylin Garcia Soto ; Daniel J. Stevens ; Joseph D. Twicken ; Stéphane Udry ; Steven Villanueva Jr. ; Sharon X. Wang ; Bill Wohler ; Xinyu Yao ; Zhuchang Zhanen_US
dspace.date.submission2020-04-09T16:37:03Z
mit.journal.volume875en_US
mit.journal.issue2en_US
mit.licensePUBLISHER_POLICY
mit.metadata.statusComplete


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