GJ 832c: a super-earth in the habitable zone
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Archivos
Fecha
2014-08
Profesor/a Guía
Facultad/escuela
Idioma
en
Título de la revista
ISSN de la revista
Título del volumen
Editor
Institute of Physics Publishing
Nombre de Curso
Licencia CC
Atribution 4.0 International (CC BY 4.0)
Licencia CC
https://creativecommons.org/licenses/by/4.0/deed.es
Resumen
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.
Notas
Indexación: Scopus.
Palabras clave
Astrobiology, Planets and Satellites: individual (GJ 832), Techniques: Radial Velocities Online-only material: color figures
Citación
Astrophysical Journal. Volume 791, Issue 2. 20 August 2014. Article number 114
DOI
DOI: 10.1088/0004-637X/791/2/114