J/AJ/161/36 117 exoplanets in habitable zone with Kepler DR25 (Bryson+, 2021)
The occurrence of rocky habitable-zone planets around Solar-like stars from
Kepler data.
Bryson S., Kunimoto M., Kopparapu R.K., Coughlin J.L., Borucki W.J.,
Koch D., Aguirre V.S., Allen C., Barentsen G., Batalha N.M., Berger T.,
Boss A., Buchhave L.A., Burke C.J., Caldwell D.A., Campbell J.R.,
Catanzarite J., Chandrasekaran H., Chaplin W.J., Christiansen J.L.,
Christensen-Dalsgaard J., Ciardi D.R., Clarke B.D., Cochran W.D.,
Dotson J.L., Doyle L.R., Duarte E.S., Dunham E.W., Dupree A.K., Endl M.,
Fanson J.L., Ford E.B., Fujieh M., Gautier III T.N., Geary J.C.,
Gilliland R.L., Girouard F.R., Gould A., Haas M.R., Henze C.E., Holman M.J.,
Howard A.W., Howell S.B., Huber D., Hunter R.C., Jenkins J.M., Kjeldsen H.,
Kolodziejczak J., Larson K., Latham D.W., Li J., Mathur S., Meibom S.,
Middour C., Morris R.L., Morton T.D., Mullally F., Mullally S.E.,
Pletcher D., Prsa A., Quinn S.N., Quintana E.V., Ragozzine D., Ramirez S.V.,
Sanderfer D.T., Sasselov D., Seader S.E., Shabram M., Shporer A.,
Smith J.C., Steffen J.H., Still M., Torres G., Troeltzsch J., Twicken J.D.,
Uddin A.K., Van Cleve J.E., Voss J., Weiss L.M., Welsh W.F., Wohler B.,
Zamudio K.A.
<Astron. J., 161, 36 (2021)>
=2021AJ....161...36B 2021AJ....161...36B
ADC_Keywords: Exoplanets; Effective temperatures; Optical
Keywords: Exoplanets
Abstract:
We present the occurrence rates for rocky planets in the habitable
zones (HZs) of main-sequence dwarf stars based on the Kepler DR25
planet candidate catalog and Gaia-based stellar properties. We provide
the first analysis in terms of star-dependent instellation flux, which
allows us to track HZ planets. We define η⊕ as the HZ
occurrence of planets with radii between 0.5 and 1.5 R⊕ orbiting
stars with effective temperatures between 4800 and 6300K. We find that
η⊕ for the conservative HZ is between 0.37-0.21+0.48
(errors reflect 68% credible intervals) and 0.60-0.36+0.90 planets
per star, while the optimistic HZ occurrence is between
0.58-0.33+0.73 and 0.88-0.51+1.28 planets per star. These
bounds reflect two extreme assumptions about the extrapolation of
completeness beyond orbital periods where DR25 completeness data are
available. The large uncertainties are due to the small number of
detected small HZ planets. We find similar occurrence rates between
using Poisson likelihood Bayesian analysis and using Approximate
Bayesian Computation. Our results are corrected for catalog
completeness and reliability. Both completeness and the planet
occurrence rate are dependent on stellar effective temperature. We
also present occurrence rates for various stellar populations and
planet size ranges. We estimate with 95% confidence that, on average,
the nearest HZ planet around G and K dwarfs is ∼6pc away and there are
∼4 HZ rocky planets around G and K dwarfs within 10pc of the Sun.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table8.dat 75 117 Planet candidate properties
--------------------------------------------------------------------------------
See also:
J/ApJ/687/1264 : Age estimation for solar-type dwarfs (Mamajek+, 2008)
J/ApJ/736/19 : Kepler planetary candidates. II. (Borucki+, 2011)
J/ApJ/753/156 : T/Y brown dwarfs with WISE photometry (Kirkpatrick+, 2012)
J/ApJS/204/24 : Kepler planetary candidates. III. (Batalha+, 2013)
J/ApJ/767/95 : Improved stellar parameters small KIC stars (Dressing+, 2013)
J/ApJ/771/L45 : 3D global climate models exoplanet around M-star (Yang+,2013)
J/ApJ/795/64 : Catalog exoplanet physical parameters (Foreman-Mackey+, 2014)
J/ApJ/809/8 : Terrestrial planet occurrence rates KOI stars (Burke+, 2015)
J/ApJ/807/45 : Potentially habitable planets orbit. M dwarfs (Dressing+,2015)
J/ApJ/799/180 : Radii 430 KOI Earth to Neptune-sized planets (Silburt+, 2015)
J/ApJS/224/12 : Kepler planetary candidates. VII. 48-month (Coughlin+, 2016)
J/AJ/152/158 : Final Kepler transiting planet search (DR25) (Twicken+, 2016)
J/ApJ/825/19 : Mass-radius relationship planets with Rp<4 (Wolfgang+, 2016)
J/ApJ/834/17 : Mass & radius of planets, moons, low mass stars (Chen+, 2017)
J/AJ/154/109 : California-Kepler Survey. III. Planet radii (Fulton+, 2017)
J/AJ/153/71 : Kepler follow-up observation program I. Imaging (Furlan+,2017)
J/AJ/154/108 : California-Kepler Survey (CKS). II. Properties (Johnson+,2017)
J/AJ/154/107 : California-Kepler Survey (CKS). I. 1305 stars (Petigura+,2017)
J/ApJ/866/99 : Revised radii KIC stars &planets using Gaia DR2 (Berger+,2018)
J/AJ/155/205 : Occur. rates for Q1-Q16 KOI catalog planet cand. (Hsu+,2018)
J/AJ/155/89 : California-Kepler Survey (CKS). IV. Planets (Petigura+, 2018)
J/ApJS/235/38 : Kepler planetary cand. VIII. DR25 reliability (Thompson+,2018)
J/AJ/155/48 : California-Kepler Survey. V. Masses and radii (Weiss+, 2018)
J/AJ/158/109 : Occurrence rates of planets orbiting FGK stars (Hsu+, 2019)
J/AJ/160/108 : Gaia-Kepler stellar properties. II. Planets (Berger+, 2020)
J/AJ/159/280 : Gaia-Kepler stellar properties. I. KIC stars (Berger+, 2020)
J/ApJS/247/28 : K2 star parameters from Gaia & LAMOST (Hardegree-Ullman+,2020)
Byte-by-byte Description of file: table8.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 7 A7 --- KOI Kepler Object Identifier
9- 9 A1 --- f_KOI [b] Flag on KOI (1)
11- 14 F4.2 Rgeo Rad [0.79/5.02] Planetary radius
16- 22 F7.2 Rgeo E_Rad [0.03/5964.94] Upper uncertainty in Radius
24- 27 F4.2 Rgeo e_Rad [0.04/2.05] Lower uncertainty in Radius
29- 34 F6.2 d Per [28.46/623.71] Orbital period
36- 39 F4.2 --- Instel [0.24/3.21] Instellation in Earth units
41- 44 F4.2 --- E_Instel [0.02/0.52] Upper uncertainty in Instel
46- 49 F4.2 --- e_Instel [0.02/0.49] Lower uncertainty in Instel
51- 54 I4 K Teff [3926/6753] Host star effective temperature
56- 58 I3 K E_Teff [43/272] Upper uncertainty in Teff
60- 62 I3 K e_Teff [45/320] Lower uncertainty in Teff
64- 67 F4.2 --- Rel [0.01/1] Reliability
69- 75 F7.5 --- IncProb [0.00026/1] Inclusion probability
--------------------------------------------------------------------------------
Note (1): Flags as follows:
b = The KOI has a central value in the computational domain
0.5R⊕≤r≤2.5R⊕ and 0.2I⊕≤I≤2.2I⊕
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 02-Mar-2021