J/AJ/159/124 Searching Kepler data. I. 17 new planets (Kunimoto+, 2020)
Searching the entirety of Kepler data.
I. 17 new planet candidates including one habitable zone world.
Kunimoto M., Matthews J.M., Ngo H.
<Astron. J., 159, 124 (2020)>
=2020AJ....159..124K 2020AJ....159..124K
ADC_Keywords: Exoplanets; Photometry, infrared; Stars, diameters; Stars, masses;
Abundances, [Fe/H]; Stars, distances
Keywords: Exoplanets ; Exoplanet detection methods ; Transit photometry ;
Exoplanet systems ; Habitable planets
Abstract:
We present the results of an independent search of all ∼200000 stars
observed over the four year Kepler mission (Q1-Q17) for multiplanet
systems, using a three-transit minimum detection criterion to search
orbital periods up to hundreds of days. We incorporate both automated
and manual triage, and provide estimates of the completeness and
reliability of our vetting pipeline. Our search returned 17 planet
candidates (PCs) in addition to thousands of known Kepler Objects of
Interest (KOIs), with a 98.8% recovery rate of already confirmed
planets. We highlight the discovery of one candidate, KIC-7340288b,
that is both rocky (radius=<1.6R⊕) and in the Habitable Zone
(insolation between 0.25 and 2.2 times the Earth's insolation).
Another candidate is an addition to the already known KOI-4509 system.
We also present adaptive optics imaging follow-up for six of our new
PCs, two of which reveal a line-of-sight stellar companion within 4".
Description:
We collected observations of three stars on the Gemini North 8.1m
telescope in the Ks band with the Natural Guide Star Adaptative Optic
(NGS-AO) assisted Near InfraRed Imager and spectrograph (NIRI). Data
were taken between 2018-July and 2019-June (ProgramID GN-2018B-Q-134).
Another three stars were observed with the Laser Guide Star (LGS) AO
system and NIRI in 2019-July as part of a Fast Turnaround program
(ProgramID GN-2019A-FT-213). Total exposure time for each target was
between 5 and 6 minutes. We used the f/32NIRI camera, providing a
plate scale of 0.022"/px and a 22"x22" field of view. We observed an
additional 56 targets across both programs.
File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 35 372 Contrast curve data for all 6 targets observed with
Gemini NGS-AO and LGS-AO in the Ks band
table4.dat 117 57 Isochrones fit results for select fitted stellar
parameters
table5.dat 132 57 Summary of results for all new candidate planets
and false positives
table8.dat 41 3475 Contrast curve data for all 56 additional targets
observed with Gemini NGS-AO and LGS-AO in the Ks
band.
table9.dat 81 60 AO Results from our gemini north observations,
reporting all companions within 4"
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See also:
V/133 : Kepler Input Catalog (Kepler Mission Team, 2009)
I/337 : Gaia DR1 (Gaia Collaboration, 2016)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
J/ApJ/736/19 : Kepler planetary candidates. II. (Borucki+, 2011)
J/AJ/142/112 : KIC photometric calibration (Brown+, 2011)
J/A+A/529/A75 : Limb-darkening coefficients (Claret+, 2011)
J/ApJ/738/170 : False positive Kepler planet candidates (Morton+, 2011)
J/ApJS/199/30 : Teff scale for KIC stars (Pinsonneault+, 2012)
J/ApJS/204/24 : Kepler planetary candidates. III. (Batalha+, 2013)
J/MNRAS/429/2001 : New transiting planet candidates from Kepler (Huang+, 2013)
J/A+A/555/A58 : New Kepler planetary candidates (Ofir+, 2013)
J/ApJS/208/9 : Intrinsic colors & temperatures of PMS stars (Pecaut+, 2013)
J/ApJ/768/127 : Q1-11 Kepler light curve of KIC 4862625 (Schwamb+, 2013)
J/ApJ/770/90 : Candidate planets in the habitable zones (Gaidos, 2013)
J/ApJS/210/19 : Kepler planetary candidates. IV. 22 months (Burke+, 2014)
J/ApJ/791/35 : Detection of 715 Kepler planet cand. host stars (Law+,2014)
J/ApJS/211/24 : Rotation periods of Kepler MS stars (McQuillan+, 2014)
J/ApJ/784/45 : Kepler's multiple planet candidates. III. (Rowe+, 2014)
J/ApJ/787/47 : 106 Kepler ultra-short-period planets (Sanchis-Ojeda+, 2014)
J/ApJ/795/167 : Transits of PH3 b, c, & d January, 2019 (Schmitt+, 2014)
J/ApJ/807/45 : Potentially habitable orbiting M dwarfs (Dressing+, 2015)
J/ApJS/217/31 : Kepler planetary candidates. VI. 4yr Q1-Q16 (Mullally+,2015)
J/ApJS/217/16 : Kepler planetary candidates. V. 3yr Q1-Q12 (Rowe+, 2015)
J/ApJS/224/12 : Kepler planetary candidates. VII. 48-month (Coughlin+, 2016)
J/ApJ/822/86 : False positive proba. for Q1-Q17 DR24 KOIs (Morton+, 2016)
J/AJ/153/71 : Kepler follow-up obs. program. I. Imaging (Furlan+, 2017)
J/ApJS/229/30 : Stellar properties of Q1-17 Kepler targets (Mathur+, 2017)
J/MNRAS/465/2634 : Kepler and K2 best candidates for planets (Armstrong+, 2017)
J/ApJS/235/38 : Kepler planetary cand. VIII. Reliability (Thompson+, 2018)
J/A+A/624/A49 : Spectra of Earth-like planets M-dwarfs (Wunderlich+, 2019)
J/AJ/157/143 : Kepler GK dwarf planet candidate samples (Burke+, 2019)
J/AJ/158/58 : Autoregressive planet search Kepler stars (Caceres+, 2019)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 7 I7 --- KIC Kepler Input Catalogue Identifier
9- 11 A3 --- GS Gemini NIRI Guide Star System used (1)
13- 14 I2 d Obs.D UT Day of the observation
16- 17 I2 "month" Obs.M [5/7] Month of the observation
19- 22 I4 yr Obs.Y [2019] Year of the observation
24- 27 F4.2 arcsec Sep [0.2/7.81] Separation
29- 35 F7.5 mag DKs [0.69/8.38] 5σ magnitude contrast in
Ks-band (ΔKs)
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Note (1): Systems as follows:
LGS = Laser Guide Star (187 occurrences)
NGS = Natural Guide Star (185 occurrences)
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 I8 --- KIC Kepler Input Catalogue Identifier
10- 13 F4.2 Rsun Rad [0.54/5.26] Radius
15- 19 F5.2 Rsun e_Rad [-1.02/0] Negative error on Rad
21- 25 F5.2 Rsun E_Rad [0/0.55] Positive error on Rad
27- 30 F4.2 Msun M [0.57/3.65] Stellar mass
32- 36 F5.2 Msun e_M [-0.85/-0.01] Negative error on M
38- 42 F5.2 Msun E_M [0.01/0.78] Positive error on M
44- 48 I5 K Teff [3758/12631] Effective temperature
50- 54 I5 K e_Teff [-2685/-21] Negative error on Teff
56- 59 I4 K E_Teff [28/961] Positive error on Teff
61- 65 F5.3 [cm/s2] logg [3.284/4.73] Surface gravity
67- 72 F6.3 [cm/s2] e_logg [-0.14/-0.008] Negative error on logg
74- 79 F6.3 [cm/s2] E_logg [0.007/0.252] Positive error on logg
81- 86 F6.3 [Sun] [Fe/H] [-0.452/0.388] Metallicity
88- 93 F6.3 [Sun] e_[Fe/H] [-0.491/-0.049] Negative error on [Fe/H]
95-100 F6.3 [Sun] E_[Fe/H] [0.05/0.382] Positive error on [Fe/H]
102-105 F4.2 kpc Dist [0.15/2.6] Distance
107-111 F5.2 kpc e_Dist [-0.24/0] Negative error on Dist
113-117 F5.2 kpc E_Dist [0/0.19] Positive error on Dist
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 8 I8 --- KIC Kepler Input Catalogue Identifier
10 A1 --- m_KIC Companion
12- 16 F5.1 d P [2.3/370] Period
18- 21 F4.2 Rgeo R [0.51/9.61] Planet's radius (1)
23- 27 F5.2 Rgeo e_R [-1.77/-0.04] Negative error on R
29- 33 F5.2 Rgeo E_R [0.04/2.49] Positive error on R
35- 39 F5.3 AU a [0.033/1.22] Semi-major axis
41- 46 F6.3 AU e_a [-0.027/-0.001] Negative error on a
48- 53 F6.3 AU E_a [0.001/0.075] Positive error on a
55- 58 I4 K Teq [194/2865] Equilibrium temperature
60- 63 I4 K e_Teq [-511/-3] Negative error on Teq
65- 67 I3 K E_Teq [4/309] Positive error on Teq
69- 76 F8.2 Earth S [0.33/15981] Stellar insolation
78- 86 F9.3 Earth e_S [-8693/-0.02] Negative error on S
88- 94 F7.2 Earth E_S [0.03/8087] Positive error on S
96- 99 F4.1 --- S/N [6.5/10.7] Signal-to-noise ratio
101-107 E7.4 --- FPP [1.13e-08/0.11]? False Positive Probability
109-112 A4 --- Status Status (2)
114-132 A19 --- Note Comment
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Note (1): Planetary radii do not take into account dilution; refer to Table6
of the article.
Note (2): Status as follows:
FP = False Positives; due to low reliability, stellar variability,
centroid Offset, or FPP>0.9
CAND = Candidate Planets; FPP<0.9
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Byte-by-byte Description of file: table8.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 I8 --- KIC Kepler Input Catalogue Identifier
10- 13 A4 --- KOI Kepler Object of Interest ID
15- 17 A3 --- GS Gemini NIRI Guide Star System used (1)
19- 20 I2 d Obs.D UT Day of the observation
22- 23 I2 "month" Obs.M Month of the observation
25- 28 I4 yr Obs.Y [2018/2019] Year of the observation
30- 33 F4.2 arcsec Sep [0.11/7.92] Separation, arcsec
35- 41 F7.5 mag DKs [0.01/9.09] 5σ magnitude contrast in
Ks-band (ΔKs)
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Note (1): Systems as follows:
LGS = Laser Guide Star (708 occurrences)
NGS = Natural Guide Star (2767 occurrences)
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Byte-by-byte Description of file: table9.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 I8 --- KIC Kepler Input Catalogue Identifier
10- 13 I4 --- KOI ? Kepler Object of Interest ID
15- 20 A6 --- GS Gemini NIRI Guide Star System used (1)
22- 25 I4 yr Obs.Y [2018/2019] Year of the observation
27- 29 A3 "month" Obs.M Month of the observation
31- 32 I2 d Obs.D UT day of the observation
34 A1 --- Comp? Companion within 4" ? Y=Yes or N=No
36- 41 F6.4 arcsec Sep [0.235/3.82]? Separation
43- 51 F9.4 arcsec e_Sep [0.0001/1]? Error on Sep
53- 60 F8.4 deg PA [2.27/337]? Position angle
62- 67 F6.4 deg e_PA [0.0001/0.15]? Error on PA
69- 74 F6.4 mag DKs [0.17/6.65]? 5σ magnitude contrast in
Ks-band (ΔKs)
76- 81 F6.4 mag e_DKs [0.0006/0.09]? Error on DKs
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Note (1): Systems as follows:
LGS-AO = Laser Guide Star (11 occurrences)
NGS-AO = Natural Guide Star (49 occurrences)
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History:
From electronic version of the journal
References:
Kunimoto et al. Paper II. 2020AJ....159..248K 2020AJ....159..248K
(End) Prepared by [AAS], Coralie Fix [CDS], 19-Jun-2020