J/AJ/162/259 Scaling K2. IV. Campaigns 1-8 & 10-18 planets sample (Zink+, 2021)
Scaling K2.
IV. A uniform planet sample for Campaigns 1-8 and 10-18.
Zink J.K., Hardegree-ullman K.K., Christiansen J.L., Bhure S., Adkins B.D.,
Petigura E.A., Dressing C.D., Crossfield I.J.M., Schlieder J.E.
<Astron. J., 162, 259-259 (2021)>
=2021AJ....162..259Z 2021AJ....162..259Z (SIMBAD/NED BibCode)
ADC_Keywords: Exoplanets; Photometry, infrared; Optical; Stars, masses;
Stars, diameters
Keywords: Exoplanet catalogs; Transit photometry
Abstract:
We provide the first full K2 transiting exoplanet sample, using
photometry from Campaigns 1-8 and 10-18, derived through an entirely
automated procedure. This homogeneous planet candidate catalog is
crucial to perform a robust demographic analysis of transiting
exoplanets with K2. We identify 747 unique planet candidates and 57
multiplanet systems. Of these candidates, 366 have not been previously
identified, including one resonant multiplanet system and one system
with two short-period gas giants. By automating the construction of
this list, measurements of sample biases (completeness and
reliability) can be quantified. We carried out a light-curve-level
injection/recovery test of artificial transit signals and found a
maximum completeness of 61%, a consequence of the significant
detrending required for K2 data analysis. Through this operation we
attained measurements of the detection efficiency as a function of
signal strength, enabling future population analysis using this
sample. We assessed the reliability of our planet sample by testing
our vetting software EDI-Vetter against inverted transit-free light
curves. We estimate that 91% of our planet candidates are real
astrophysical signals, increasing up to 94% when limited to the FGKM
dwarf stellar population. We also constrain the contamination rate
from background eclipsing binaries to less than 5%. The presented
catalog, along with the completeness and reliability measurements,
enable robust exoplanet demographic studies to be carried out across
the fields observed by the K2 mission for the first time.
Description:
We provide a catalog of transiting exoplanet candidates using K2
photometry from Campaign 1-8 and 10-18, derived using a fully
automated detection pipeline.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 267 806 The homogeneous catalog of K2 planet candidates
and their associated planet and stellar
parameters
table2.dat 171 372182 The CDPP measurements of each stellar target
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See also:
VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)
IV/34 : K2 Ecliptic Plane Input Catalog (EPIC) (Huber+, 2017)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
J/A+A/529/A75 : Limb-darkening coefficients (Claret+, 2011)
J/PASP/124/1279 : Q3 Kepler's combined photometry (Christiansen+, 2012)
J/ApJ/763/41 : Kepler multiple-candidate systems radii (Ciardi+, 2013)
J/ApJ/767/95 : Improved stellar parameters smallest KIC stars (Dressing+, 2013)
J/ApJS/204/24 : Kepler planetary candidates. III. (Batalha+, 2013)
J/ApJS/207/35 : Kepler pipeline signal-to-noise studies (Christiansen+, 2013)
J/AJ/147/119 : Catalog of sources in the Kepler field of view (Coughlin+, 2014)
J/ApJ/787/80 : 139 Kepler planets transit time variations (Hadden+, 2014)
J/AJ/150/133 : Stellar noise 4529 Kepler solar-type dwarfs (Gilliland+, 2015)
J/ApJ/799/180 : Radii 430 KOI Earth- to Neptune-sized planets (Silburt+, 2015)
J/ApJ/807/45 : Potentially habitable planet orbiting M dwarfs (Dressing+, 2015)
J/ApJ/809/8 : Terrestrial planet occurrence rates for KOI stars (Burke+, 2015)
J/ApJ/810/95 : Kepler pipeline S/N studies. II. 2011 data (Christiansen+, 2015)
J/ApJS/217/16 : Kepler planetary candidates. V. 3yr Q1-Q12 (Rowe+, 2015)
J/ApJS/217/31 : Kepler planetary candidates. VI. 4yr Q1-Q16 (Mullally+, 2015)
J/A+A/587/A64 : Physical properties of giant exoplanets (Santerne+, 2016)
J/A+A/594/A100 : K2 new planetary and EB candidates (Barros+, 2016)
J/ApJ/822/86 : False positive probabilities Q1-Q17 DR24 KOIs (Morton+, 2016)
J/ApJS/222/14 : Planetary candidates from 1st yr K2 mission (Vanderburg+, 2016)
J/ApJS/224/2 : K2 EPIC stellar properties for 138600 targets (Huber+, 2016)
J/ApJS/224/12 : Kepler planetary candidates. VII. 48-month (Coughlin+, 2016)
J/ApJS/225/9 : Kepler TTVs. IX. The full long-cadence data set (Holczer+, 2016)
J/ApJS/226/7 : Planet candidates discovered using K2 1st yr (Crossfield+, 2016)
J/PASP/128/G4502 : False alarms Kepler planet candidate cat. (Mullally+, 2016)
J/AJ/154/5 : Transit timing variations of 145 Kepler planets (Hadden+, 2017)
J/AJ/154/109 : California-Kepler Survey. III. Planet radii (Fulton+, 2017)
J/AJ/154/207 : K2 planetary systems orbiting low-mass stars (Dressing+, 2017)
J/ApJ/856/23 : BANYAN. XI. The BANYAN Σ algorithm (Gagne+, 2018)
J/AJ/155/21 : Planet candidates from K2 campaigns 5-8 (Petigura+, 2018)
J/AJ/155/48 : California-Kepler Survey. V. Masses and radii (Weiss+, 2018)
J/AJ/155/136 : Planets orbiting bright stars in K2 campaigns 0-10 (Mayo+, 2018)
J/AJ/156/22 : Planetary candidates from K2 Campaign 16 (Yu+, 2018)
J/AJ/156/78 : 44 validated planets from K2 Campaign 10 (Livingston+, 2018)
J/AJ/156/259 : Robo-AO detected close binaries in Gaia DR2 (Ziegler+, 2018)
J/ApJS/235/38 : Kepler planetary cand. VIII. DR25 reliability (Thompson+, 2018)
J/AJ/157/124 : DAVE. I. Benchmarking K2 vetting tools (Kostov+, 2019)
J/AJ/157/169 : Identifying exoplanets with deep learning in K2 (Dattilo+, 2019)
J/AJ/158/58 : Autoregressive planet search for Kepler stars (Caceres+, 2019)
J/AJ/158/75 : Mid-type M dwarfs planet occurrence (Hardegree-Ullman+, 2019)
J/AJ/158/109 : Occurrence rates of planets orbiting FGK stars (Hsu+, 2019)
J/AJ/158/239 : Metal-rich stars abundances & equivalent widths (Teske+, 2019)
J/ApJS/244/11 : Planet candidates and EBs in K2 campaigns 0-8 (Kruse+, 2019)
J/AJ/159/154 : Exoplanet candidates Campaign 5 of the K2 mission (Zink+, 2020)
J/AJ/159/211 : Exoplanet parameters from Kepler and K2 (Cloutier+, 2020)
J/AJ/159/280 : Gaia-Kepler stellar prop. catalog.I. KIC stars (Berger+, 2020)
J/ApJS/247/28 : K2 star parameters from Gaia & LAMOST (Hardegree-Ullman+, 2020)
J/AJ/161/36 : 117 exoplanets in habitable zone with Kepler DR25 (Bryson+, 2021)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 9 I9 --- EPIC EPIC Identifier
11- 12 I2 --- CAMP Campaign Identifier
14- 25 F12.2 --- CAND Candidate Identifier
27 I1 --- MUTI [0/1] Found in Multiple Campaigns Flag
29- 32 F4.2 --- Score [0.51/0.98] Consistency Score
34- 42 F9.6 d Per [0.53/39.6] Orbital period
44- 51 F8.6 d e_Per [0.000005/0.008] Lower Uncertainty in Period
53- 60 F8.6 d E_Per [0.000004/0.03] Upper Uncertainty in Period
62- 67 F6.4 --- Ratio [0.009/0.28] Planetary to stellar radii ratio
69- 73 F5.3 --- e_Ratio [0/0.06] Lower Uncertainty in Ratio
75- 79 F5.3 --- E_Ratio [0/0.05] Upper Uncertainty in Ratio
81- 87 F7.3 Rgeo Rad [0.45/198] Planet radius
89- 94 F6.3 Rgeo e_Rad [0.03/45.7] Lower Uncertainty in Rad
96-101 F6.3 Rgeo E_Rad [0.02/57.3] Upper Uncertainty in Rad
103-113 F11.6 d t0 [1977/3430] Transit ephemeris
115-122 F8.6 d e_t0 [6.2e-05/0.08] Lower Uncertainty in t0
124-131 F8.6 d E_t0 [6.9e-05/0.05] Upper Uncertainty in t0
133-137 F5.3 --- b [0.02/1] Impact parameter
139-143 F5.3 --- e_b [0.001/0.8] Lower Uncertainty in b
145-149 F5.3 --- E_b [0.001/0.5] Upper Uncertainty in b
151-156 F6.2 --- MajAxis [1.4/108] Semi-major axis to stellar radii
ratio
158-162 F5.2 --- e_MajAxis [0.01/93.7] Lower Uncertainty in MajAxis
164-168 F5.2 --- E_MajAxis [0.01/19.9] Upper Uncertainty in MajAxis
170-174 F5.3 d tDur [0.004/1.3] Transit duration
176-182 F7.4 solRad R* [0.12/22.5] Stellar Radius
184-189 F6.4 solRad e_R* [0.005/4.7] Lower Uncertainty in R*
191-196 F6.4 solRad E_R* [0.005/6.5] Upper Uncertainty in R*
198-203 F6.3 solMass M* [0.09/19.6] Stellar Mass
205-209 F5.3 solMass e_M* [0.003/8.7] Lower Uncertainty in M*
211-216 F6.3 solMass E_M* [0.003/19] Upper Uncertainty in M*
218-223 F6.1 K Teff [3099/8104] Stellar Effective Temperature
225-230 F6.1 K e_Teff [11/1901] Uncertainty Teff
232-237 F6.4 [cm/s2] logg [1.77/5.64] Stellar Surface gravity
239-244 F6.4 [cm/s2] e_logg [0.01/0.6] Uncertainty logg
246-251 F6.3 [Sun] FeH [-1.44/0.4] Stellar Metallicity
253-257 F5.3 [Sun] e_FeH [0.009/0.86] Uncertainty FeH
259-262 A4 --- SpT Stellar Spectral Classification
264-267 A4 --- VFlag Visual Inspection Classification
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 9 I9 --- EPIC EPIC identifier
11- 12 I2 --- CAMP Campaign identifier
14- 25 F12.3 ppm CDPP10 ? CDPP RMS Value for Transit of 1.0hr
27- 38 F12.3 ppm CDPP15 ? CDPP RMS Value for Transit of 1.5hr
40- 51 F12.3 ppm CDPP20 ? CDPP RMS Value for Transit of 2.0hr
53- 64 F12.3 ppm CDPP25 ? CDPP RMS Value for Transit of 2.5hr
66- 78 F13.3 ppm CDPP30 ? CDPP RMS Value for Transit of 3.0hr
80- 91 F12.3 ppm CDPP40 ? CDPP RMS Value for Transit of 4.0hr
93-104 F12.3 ppm CDPP50 ? CDPP RMS Value for Transit of 5.0hr
106-117 F12.3 ppm CDPP60 ? CDPP RMS Value for Transit of 6.0hr
119-131 F13.3 ppm CDPP70 ? CDPP RMS Value for Transit of 7.0hr
133-145 F13.3 ppm CDPP80 ? CDPP RMS Value for Transit of 8.0hr
147-158 F12.3 ppm CDPP90 ? CDPP RMS Value for Transit of 9.0hr
160-171 F12.3 ppm CDPP100 ? CDPP RMS Value for Transit of 10.0hr
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History:
From electronic version of the journal
References:
Hardegree-Ullman et al. Paper I : 2020ApJS..247...28H 2020ApJS..247...28H Cat. J/ApJS/247/28
Zink et al. Paper II : 2020AJ....159..154Z 2020AJ....159..154Z Cat. J/AJ/159/154
Zink etl al. Paper III : 2020AJ....160...94Z 2020AJ....160...94Z
(End) Prepared by [AAS], Coralie Fix [CDS], 21-Feb-2022