Examinando por Autor "Tuomi, Mikko"

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    GJ 832c: a super-earth in the habitable zone
    (Institute of Physics Publishing, 2014-08) Wittenmyer, Robert A.; Tuomi, Mikko; Butler, R.P.; Jones, H.R.A.; Anglada-Escudé, Guillem; Horner, Jonathan; Tinney, C.G; Marshall, J.P.; Carter, B.D.; Bailey, J.; Salter, G.S.; O'Toole, S.J.; Wright, D.; Crane, J.D.; Schectman, S.A.; Arriagada, P.; Thompson, I.; Minniti, D.; Jenkins, J.S.; Diaz, M.
    We report the detection of GJ 832c, a super-Earth orbiting near the inner edge of the habitable zone of GJ 832, an M dwarf previously known to host a Jupiter analog in a nearly circular 9.4 yr orbit. The combination of precise radial velocity measurements from three telescopes reveals the presence of a planet with a period of 35.68 ± 0.03 days and minimum mass (m sin i) of 5.4 ± 1.0 Earth masses. GJ 832c moves on a low-eccentricity orbit (e = 0.18±0.13) toward the inner edge of the habitable zone. However, given the large mass of the planet, it seems likely that it would possess a massive atmosphere, which may well render the planet inhospitable. Indeed, it is perhaps more likely that GJ 832c is a “super-Venus,” featuring significant greenhouse forcing. With an outer giant planet and an interior, potentially rocky planet, the GJ 832 planetary system can be thought of as a miniature version of our own solar system.