J/other/NatAs/6.367 70 cool giant exoplanets (Kipping+, 2022)
An exomoon survey of 70 cool giant exoplanets and the new candidate
Kepler-1708 b-i.
Kipping D., Bryson S., Burke C., Christiansen J., Hardegree-ullman K.,
Quarles B., Hansen B., Szulagyi J., Teachey A.
<Nature Astronomy, 6, 367-380 (2022)>
=2022NatAs...6..367K 2022NatAs...6..367K (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Exoplanets ; Stars, giant ;
Photometry ; Optical
Abstract:
Exomoons represent a crucial missing puzzle piece in our efforts to
understand extrasolar planetary systems. To address this deficiency,
we here describe an exomoon survey of 70 cool, giant transiting
exoplanet candidates found by Kepler. We identify only one exhibiting
a moon-like signal that passes a battery of vetting tests:
Kepler-1708b. We show that Kepler-1708b is a statistically validated
Jupiter-sized planet orbiting a Sun-like quiescent star at 1.6au. The
signal of the exomoon candidate, Kepler-1708 b-i, is a 4.8σ
effect and is persistent across different instrumental detrending
methods, with a 1% false-positive probability via
injection-recovery. Kepler-1708b-i is ∼2.6 Earth radii and is
located in an approximately coplanar orbit at ∼12 planetary radii from
its ∼1.6au Jupiter-sized host. Future observations will be necessary
to validate or reject the candidate.
Description:
Fundamental stellar parameters inferred for the cool-giant host stars
in our sample using an isochrone analysis.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 82 69 Fundamental stellar parameters inferred for the
cool-giant host stars in our sample using an
isochrone analysis
5351250.dat 70 12378 KIC 5351250 detrended photometry
7906827.dat 70 1177 KIC 7906827 detrended photometry
8681125.dat 70 554 KIC 8681125 detrended photometry
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See also:
V/133 : Kepler Input Catalog (Kepler Mission Team, 2009)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 8 I8 --- KIC KIC identification number
10- 14 F5.3 Msun Mass Stellar mass
16- 20 F5.3 Rsun Rad Stellar radius
22- 26 F5.2 [yr] logAge Age
28- 33 F6.3 [Lsun] logL Stellar luminosity
35- 40 F6.1 pc Dist Distance
42- 47 F6.3 [g/cm3] logrho Density
49- 53 F5.3 Msun e_Mass Stellar mass error
55- 59 F5.3 Rsun e_Rad Stellar radius error
61- 64 F4.2 [yr] e_logAge Age error
66- 70 F5.3 [Lsun] e_logL Stellar luminosity error
72- 76 F5.1 pc e_Dist Distance error
78- 82 F5.3 [g/cm3] e_logrho Density error
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Byte-by-byte Description of file: 5351250.dat 7906827.dat 8681125.dat
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Bytes Format Units Label Explanations
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1- 18 F18.12 d BJD Bsricentric Julian date, UTC (BJD-2400000)
25- 42 F18.16 --- Int Normalized intensity
49- 70 F22.20 --- e_Int Normalized intensity uncertainty
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 10-Aug-2023