Bibcode
Cañas, C. I.; Wang, Songhu; Mahadevan, Suvrath; Bender, Chad F.; De Lee, Nathan; Fleming, Scott W.; García-Hernández, D. A.; Hearty, Fred R.; Majewski, Steven R.; Roman-Lopes, Alexandre; Schneider, Donald P.; Stassun, Keivan G.
Bibliographical reference
The Astrophysical Journal Letters, Volume 870, Issue 2, article id. L17, 7 pp. (2019).
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1
2019
Citations
38
Refereed citations
36
Description
Kepler-730 is a planetary system hosting a statistically validated hot
Jupiter in a 6.49 day orbit and an additional transiting candidate in a
2.85 day orbit. We use spectroscopic radial velocities from the
APOGEE-2N instrument, Robo-AO contrast curves, and Gaia distance
estimates to statistically validate the planetary nature of the
additional Earth-sized candidate. We perform astrophysical false
positive probability calculations for the candidate using the available
Kepler data and bolster the statistical validation using radial velocity
data to exclude a family of possible binary star solutions. Using a
radius estimate for the primary star derived from stellar models, we
compute radii of {1.100}-0.050+0.047
{R}Jup} and 0.140+/- 0.012 {R}Jup} (1.57+/- 0.13
{R}\oplus ) for Kepler-730b and Kepler-730c, respectively.
Kepler-730 is only the second compact system hosting a hot Jupiter with
an inner, transiting planet.
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Low- to intermediate-mass (M < 8 solar masses, Ms) stars represent the majority of stars in the Cosmos. They finish their lives on the Asymptotic Giant Branch (AGB) - just before they form planetary nebulae (PNe) - where they experience complex nucleosynthetic and molecular processes. AGB stars are important contributors to the enrichment of the
Domingo Aníbal
García Hernández