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GJ 832c: a super-Earth in the habitable zone




TekijätRobert A. Wittenmyer, Mikko Tuomi, R. P. Butler, H. R. A. Jones, Guillem Anglada-Escudé, Jonathan Horner, C. G. Tinney, J. P. Marshall, B. D. Carter, J. Bailey, G. S. Salter, S. J. O'Toole, D. Wright, J. D. Crane, S. A. Schectman, P. Arriagada, I. Thompson, D. Minniti, J. S. Jenkins, M. Diaz

KustantajaIOP PUBLISHING LTD

KustannuspaikkaBRISTOL; TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND

Julkaisuvuosi2014

JournalAstrophysical Journal

Tietokannassa oleva lehden nimiAstrophysical Journal

Lehden akronyymiAstrophys.J.

Artikkelin numero114

Vuosikerta791

Numero2

Sivujen määrä11

ISSN0004-637X

DOIhttps://doi.org/10.1088/0004-637X/791/2/114


Tiivistelmä

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.



Last updated on 2024-26-11 at 13:28