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Searching for Terrestrial Planets Orbiting in the Habitable Zone of Ultra-Cool Stars and Brown Dwarfs

dc.contributor.authorDEMORY, Brice-Olivier
dc.contributor.authorSEAGER, Sara
dc.contributor.authorLISSAUER, Jack
dc.contributor.authorLAUGHLIN, Gregory
hal.structure.identifierSydney Institute for Astronomy [SIfA]
dc.contributor.authorHUBER, Daniel
dc.contributor.authorPAYNE, Matthew
dc.contributor.authorTRIAUD, Amaury
dc.contributor.authorGILLON, Michael
dc.contributor.authorDE WIT, Julien
dc.contributor.authorZSOM, Andras
dc.contributor.authorSTAMENKOVIC, Vlada
hal.structure.identifierSSE 2013
dc.contributor.authorSELSIS, Franck
hal.structure.identifierCentre de Recherche Astrophysique de Lyon [CRAL]
dc.contributor.authorLECONTE, J.
hal.structure.identifierObservatoire Astronomique de l'Université de Genève [ObsGE]
dc.contributor.authorQUELOZ, Didier
dc.date.created2013-09-04
dc.description.abstractEnWe propose to use Kepler in 2-wheel mode to conduct a detailed search for Earth-sized planets orbiting ultra-cool stars and brown dwarfs (spectral types from M7 to L3). This population of objects presents several advantages for exoplanet surveys. First, ultra-cool stars and brown dwarfs are small and thus result in favorable planet-to-star area ratios. Second, because of their low effective temperature, the inner edge of their habitable zone is extremely close (2 to 3 days only). Third, our targets are bright at infrared wavelengths, which will enable detailed follow-up studies. Our program therefore represents a unique opportunity to find a transiting Earth-size exoplanet for which atmospheric features (including biosignatures) could be detected with near-to-come facilities such as JWST. Such exoplanet has not been discovered yet. Kepler in 2-wheel mode provides the required stability and photometric precision to make this survey successful. Our initial target sample includes 60 ultra-cool stars and brown dwarfs from which we expect to detect at least one transiting planet. We propose to monitor each source for 4 days, resulting in a total program duration of ~240 days.
dc.language.isoen
dc.subject.enAstrophysics
dc.subject.enEarth and Planetary Astrophysics
dc.title.enSearching for Terrestrial Planets Orbiting in the Habitable Zone of Ultra-Cool Stars and Brown Dwarfs
dc.typeDocument de travail - Pré-publication
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP]
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP]
dc.identifier.arxiv1309.1078
hal.identifierhal-00858375
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00858375v1
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