The Lick-Carnegie Exoplanet Survey: Gliese 687 B-A Neptune-Mass Planet Orbiting A Nearby Red Dwarf

dc.contributor.utaustinauthorMeschiari, Stefanoen_US
dc.creatorBurt, Jenniferen_US
dc.creatorVogt, Steven S.en_US
dc.creatorButler, R. Paulen_US
dc.creatorHanson, Russellen_US
dc.creatorMeschiari, Stefanoen_US
dc.creatorRivera, Eugenio J.en_US
dc.creatorHenry, Gregory W.en_US
dc.creatorLaughlin, Gregoryen_US
dc.date.accessioned2016-04-28T19:36:13Z
dc.date.available2016-04-28T19:36:13Z
dc.date.issued2014-07en
dc.description.abstractPrecision radial velocities from the Automated Planet Finder (APF) and Keck/HIRES reveal an M sin(i) = 18 +/- 2M(circle plus) planet orbiting the nearby M3V star GJ 687. This planet has an orbital period P = 38.14 days and a low orbital eccentricity. Our Stromgren b and y photometry of the host star suggests a stellar rotation signature with a period of P = 60 days. The star is somewhat chromospherically active, with a spot filling factor estimated to be several percent. The rotationally induced 60 day signal, however, is well separated from the period of the radial velocity variations, instilling confidence in the interpretation of a Keplerian origin for the observed velocity variations. Although GJ 687 b produces relatively little specific interest in connection with its individual properties, a compelling case can be argued that it is worthy of remark as an eminently typical, yet at a distance of 4.52 pc, a very nearby representative of the galactic planetary census. The detection of GJ 687 b indicates that the APF telescope is well suited to the discovery of low-mass planets orbiting low-mass stars in the as yet relatively un-surveyed region of the sky near the north celestial pole.en_US
dc.description.departmentMcDonald Observatoryen_US
dc.description.sponsorshipNSF AST-0307493, AST-0908870en_US
dc.description.sponsorshipNASA OSS NNX07AR40Gen_US
dc.description.sponsorshipNASA Keck PIen_US
dc.description.sponsorshipCarnegie Institution of Washingtonen_US
dc.description.sponsorshipW.J. McDonald Postdoctoral Fellowshipen_US
dc.identifierdoi:10.15781/T2M51R
dc.identifier.Filename2014_07_lickcarnegie.pdfen_US
dc.identifier.citationBurt, Jennifer, Steven S. Vogt, R. Paul Butler, Russell Hanson, Stefano Meschiari, Eugenio J. Rivera, Gregory W. Henry, and Gregory Laughlin. "The Lick-Carnegie Exoplanet Survey: Gliese 687 bラA Neptune-mass Planet Orbiting a Nearby Red Dwarf." The Astrophysical Journal, Vol. 789, No. 2 (Jul., 2014): 114.en_US
dc.identifier.doi10.1088/0004-637x/789/2/114en_US
dc.identifier.issn0004-637Xen_US
dc.identifier.urihttp://hdl.handle.net/2152/34876
dc.language.isoEnglishen_US
dc.relation.ispartofen_US
dc.relation.ispartofserialAstrophysical Journalen_US
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en_US
dc.rights.restrictionOpenen_US
dc.subjectplanets and satellites: detectionen_US
dc.subjectplanets and satellites: gaseousen_US
dc.subjectplanetsen_US
dc.subjectstars: individual (gl687)en_US
dc.subjecttime-series analysisen_US
dc.subjectsun-like starsen_US
dc.subjectextrasolar planetsen_US
dc.subjectmetallicityen_US
dc.subjectsearchen_US
dc.subjectsystemen_US
dc.subjectearthen_US
dc.subjectconnectionen_US
dc.subjectvelocitiesen_US
dc.subjectphotometryen_US
dc.subjectastronomy & astrophysicsen_US
dc.titleThe Lick-Carnegie Exoplanet Survey: Gliese 687 B-A Neptune-Mass Planet Orbiting A Nearby Red Dwarfen_US
dc.typeArticleen_US
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