Show simple item record

dc.contributor.authorWinters, Jennifer G.en_US
dc.contributor.authorMedina, Amber A.en_US
dc.contributor.authorIrwin, Jonathan M.en_US
dc.contributor.authorCharbonneau, Daviden_US
dc.contributor.authorAstudillo-Defru, Nicolaen_US
dc.contributor.authorHorch, Elliott P.en_US
dc.contributor.authorEastman, Jason D.en_US
dc.contributor.authorVrijmoet, Eliot Halleyen_US
dc.contributor.authorHenry, Todd J.en_US
dc.contributor.authorDiamond-Lowe, Hannahen_US
dc.contributor.authorWinston, Elaineen_US
dc.contributor.authorBarclay, Thomasen_US
dc.contributor.authorBonfils, Xavieren_US
dc.contributor.authorRicker, George R.en_US
dc.contributor.authorVanderspek, Rolanden_US
dc.contributor.authorLatham, David W.en_US
dc.contributor.authorSeager, Saraen_US
dc.contributor.authorWinn, Joshua N.en_US
dc.contributor.authorJenkins, Jon M.en_US
dc.contributor.authorUdry, Stéphaneen_US
dc.contributor.authorTwicken, Joseph D.en_US
dc.contributor.authorTeske, Johanna K.en_US
dc.contributor.authorTenenbaum, Peteren_US
dc.contributor.authorPepe, Francescoen_US
dc.contributor.authorMurgas, Felipeen_US
dc.contributor.authorMuirhead, Philip S.en_US
dc.contributor.authorMink, Jessicaen_US
dc.contributor.authorLovis, Christopheen_US
dc.contributor.authorLevine, Alan M.en_US
dc.contributor.authorLépine, Sébastienen_US
dc.contributor.authorJao, Wei-Chunen_US
dc.contributor.authorHenze, Christopher E.en_US
dc.contributor.authorFurész, Gáboren_US
dc.contributor.authorForveille, Thierryen_US
dc.contributor.authorFigueira, Pedroen_US
dc.contributor.authorEsquerdo, Gilbert A.en_US
dc.contributor.authorDressing, Courtney D.en_US
dc.contributor.authorDíaz, Rodrigo F.en_US
dc.contributor.authorDelfosse, Xavieren_US
dc.contributor.authorBurke, Christopher J.en_US
dc.contributor.authorBouchy, Françoisen_US
dc.contributor.authorBerlind, Perryen_US
dc.contributor.authorAlmenara, Jose-Manuelen_US
dc.date.accessioned2020-03-26T14:15:12Z
dc.date.available2020-03-26T14:15:12Z
dc.date.issued2019-10
dc.identifier.citationJennifer G. Winters, Amber A. Medina, Jonathan M. Irwin, David Charbonneau, Nicola Astudillo-Defru, Elliott P. Horch, Jason D. Eastman, Eliot Halley Vrijmoet, Todd J. Henry, Hannah Diamond-Lowe, Elaine Winston, Thomas Barclay, Xavier Bonfils, George R. Ricker, Roland Vanderspek, David W. Latham, Sara Seager, Joshua N. Winn, Jon M. Jenkins, Stéphane Udry, Joseph D. Twicken, Johanna K. Teske, Peter Tenenbaum, Francesco Pepe, Felipe Murgas, Philip S. Muirhead, Jessica Mink, Christophe Lovis, Alan M. Levine, Sébastien Lépine, Wei-Chun Jao, Christopher E. Henze, Gábor Furész, Thierry Forveille, Pedro Figueira, Gilbert A. Esquerdo, Courtney D. Dressing, Rodrigo F. Díaz, Xavier Delfosse, Christopher J. Burke, François Bouchy, Perry Berlind, Jose-Manuel Almenara. 2019. "Three Red Suns in the Sky: A Transiting, Terrestrial Planet in a Triple M-dwarf System at 6.9 pc." The Astronomical Journal, Volume 158, Issue 4, pp. 152 - 152. https://doi.org/10.3847/1538-3881/ab364d
dc.identifier.issn1538-3881
dc.identifier.urihttps://hdl.handle.net/2144/39814
dc.description.abstractWe present the discovery from Transiting Exoplanet Survey Satellite (TESS) data of LTT 1445Ab. At a distance of 6.9 pc, it is the second nearest transiting exoplanet system found to date, and the closest one known for which the primary is an M dwarf. The host stellar system consists of three mid-to-late M dwarfs in a hierarchical configuration, which are blended in one TESS pixel. We use MEarth data and results from the Science Processing Operations Center data validation report to determine that the planet transits the primary star in the system. The planet has a radius of ${1.38}_{-0.12}^{+0.13}$ ${R}_{\oplus }$, an orbital period of ${5.35882}_{-0.00031}^{+0.00030}$ days, and an equilibrium temperature of ${433}_{-27}^{+28}$ K. With radial velocities from the High Accuracy Radial Velocity Planet Searcher, we place a 3σ upper mass limit of 8.4 ${M}_{\oplus }$ on the planet. LTT 1445Ab provides one of the best opportunities to date for the spectroscopic study of the atmosphere of a terrestrial world. We also present a detailed characterization of the host stellar system. We use high-resolution spectroscopy and imaging to rule out the presence of any other close stellar or brown dwarf companions. Nineteen years of photometric monitoring of A and BC indicate a moderate amount of variability, in agreement with that observed in the TESS light-curve data. We derive a preliminary astrometric orbit for the BC pair that reveals an edge-on and eccentric configuration. The presence of a transiting planet in this system hints that the entire system may be co-planar, implying that the system may have formed from the early fragmentation of an individual protostellar core.en_US
dc.format.extentp. 152 - 152en_US
dc.language.isoen_US
dc.publisherAmerican Astronomical Societyen_US
dc.relation.ispartofThe Astronomical Journal
dc.subjectClose binariesen_US
dc.subjectPlanets and satellites detectionen_US
dc.subjectIndividual starsen_US
dc.subjectLow-mass starsen_US
dc.subjectAstronomy & astrophysicsen_US
dc.subjectAstronomical and space sciencesen_US
dc.titleThree red suns in the sky: A transiting, terrestrial planet in a triple M-dwarf system at 6.9 pcen_US
dc.typeArticleen_US
dc.description.versionAccepted manuscripten_US
dc.identifier.doi10.3847/1538-3881/ab364d
pubs.elements-sourcemanual-entryen_US
pubs.notesEmbargo: Not knownen_US
pubs.organisational-groupBoston Universityen_US
pubs.organisational-groupBoston University, College of Arts & Sciencesen_US
pubs.organisational-groupBoston University, College of Arts & Sciences, Department of Astronomyen_US
pubs.publication-statusPublisheden_US
dc.date.online2019-09-23
dc.identifier.orcid0000-0002-0638-8822 (Muirhead, Philip S)
dc.identifier.mycv488591


This item appears in the following Collection(s)

Show simple item record