J/AJ/143/39 Analysis of hot Jupiters in Kepler Q2 (Coughlin+, 2012)
A uniform search for secondary eclipses of hot Jupiters in Kepler Q2 light
curves.
Coughlin J.L., Lopez-Morales M.
<Astron. J., 143, 39 (2012)>
=2012AJ....143...39C 2012AJ....143...39C
ADC_Keywords: Planets ; Stars, double and multiple ; Effective temperatures ;
Stars, masses ; Stars, diameters ; Abundances, [Fe/H] ; Models
Keywords: methods: data analysis - planetary systems - techniques: photometric
Abstract:
In this paper, we present the results of searching the Kepler Q2
public data set for the secondary eclipses of 76 hot Jupiter planet
candidates from the list of 1235 candidates published by Borucki et
al., 2011, Cat. J/ApJ/736/19. This search has been performed by
modeling both the Kepler pre-search data conditioned light curves and
new light curves produced via our own photometric pipeline. We derive
new stellar and planetary parameters for each system, while
calculating robust errors for both. We find 16 systems with
1σ-2σ, 14 systems with 2σ-3σ, and 6 systems
with >3σ confidence level secondary eclipse detections in at
least one light curve produced via the Kepler pre-search data
conditioned light curve or our own pipeline; however, results can vary
depending on the light curve modeled and whether eccentricity is
allowed to vary or not. We estimate false alarm probabilities of 31%,
10%, and 6% for the 1σ-2σ, 2σ-3σ, and
>3σ confidence intervals, respectively.
Description:
We have analyzed the Kepler Q2 (continuous 90-day observation
coverage) light curves of 76 hot Jupiter transiting planet candidates
(selection from Cat. J/ApJ/736/19 of systems with P<5days and
Rp>0.5RJ) using both the Kepler Pre-search Data Conditioned (PDC)
data and the results from our own photometric pipeline (CLM) for
producing light curves from the pixel-level data. Of the 76 initial
candidates, only 55 have light curves with high enough photometric
stability to search for secondary eclipses.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 113 55 Modeled systems and their host star properties
table2.dat 209 180 Modeling results: median values and associated
1σ uncertainties
table3.dat 162 360 Derived system parameters and associated
1σ uncertainties
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See also:
V/133 : Kepler Input Catalog (Kepler Mission Team, 2009)
J/AJ/142/112 : KIC photometric calibration (Brown+, 2011)
J/A+A/508/1509 : Sky maps for hot Jupiters (Heller+, 2009)
J/ApJ/728/117 : Kepler planetary candidates. I. (Borucki+, 2011)
J/ApJ/736/19 : Kepler planetary candidates. II. (Borucki+, 2011)
J/AJ/141/78 : Low-mass eclipsing binaries in KIC (Coughlin+, 2011)
J/ApJ/738/170 : False positive Kepler planet candidates (Morton+, 2011)
J/ApJS/197/8 : Kepler candidate multiple transiting planets (Lissauer+, 2011)
J/A+A/546/A10 : Multiplicity in transiting planet-host stars (Lillo-Box+, 2012)
J/ApJS/204/24 : Kepler planetary candidates. III. (Batalha+, 2013)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 7 F7.2 --- KOI [1.01/1543.01] Kepler Object of Interest
9- 17 I9 --- KIC [3351888/12019440] Kepler ID number
19- 24 F6.3 mag Kpmag [9.958/15.979] KIC host stars' Kepler
magnitude (1)
26- 29 I4 K Teff KIC effective temperature of the star
31- 34 F4.2 [cm/s2] logg KIC surface gravity
36- 41 F6.3 [Sun] [Fe/H] KIC metallicity
43- 47 F5.3 Msun M1 Stellar mass from KIC (2)
49- 53 F5.3 Msun E_M1 Upper 1σ uncertainty on M1
55- 59 F5.3 Msun e_M1 Lower 1σ uncertainty on M1
61- 65 F5.3 Rsun R1 Stellar radius from KIC (2)
67- 71 F5.3 Rsun E_R1 Upper 1σ uncertainty on R1
73- 77 F5.3 Rsun e_R1 Lower 1σ uncertainty on R1
79- 83 F5.3 Msun M2 Stellar mass from isochrones (3)
85- 89 F5.3 Msun E_M2 Upper 1σ uncertainty on M2
91- 95 F5.3 Msun e_M2 Lower 1σ uncertainty on M2
97-101 F5.3 Rsun R2 Stellar radius from isochrones (3)
103-107 F5.3 Rsun E_R2 Upper 1σ uncertainty on R2
109-113 F5.3 Rsun e_R2 Lower 1σ uncertainty on R2
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Note (1): KIC = Kepler Input Catalog.
Note (2): Computed from the KIC
Note (3): Computed via interpolation of the stellar isochrones
(see section 4.1 of the paper for further details).
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1 I1 --- Type [1/4] Model type (1)
3- 9 F7.2 --- KOI [1.01/1543.01] Kepler Object of Interest
11- 17 F7.4 --- J Planet-to-star surface brightness ratio
19- 24 F6.4 --- E_J Upper 1σ uncertainty in J
26- 31 F6.4 --- e_J Lower 1σ uncertainty in J
33- 37 F5.3 --- rsum Sum of the fractional radius
39- 43 F5.3 --- E_rsum Upper 1σ uncertainty in rsum
45- 49 F5.3 --- e_rsum Lower 1σ uncertainty in rsum
51- 56 F6.4 --- k Planet-to-star radii ratio
58- 63 F6.4 --- E_k Upper 1σ uncertainty in k
65- 70 F6.4 --- e_k Lower 1σ uncertainty in k
72- 76 F5.2 deg i Orbital inclination
78- 83 F6.4 deg E_i Upper 1σ uncertainty in i
85- 91 F7.4 deg e_i Lower 1σ uncertainty in i
93- 98 F6.3 --- ecosw Eccentricity times cosine of longitude of
periastron e.cosω
100-104 F5.3 --- E_ecosw Upper 1σ uncertainty in ecosw
106-110 F5.3 --- e_ecosw Lower 1σ uncertainty in ecosw
112-117 F6.3 --- esinw Eccentricity times sine of longitude of
periastron e.sinω
119-123 F5.3 --- E_esinw Upper 1σ uncertainty in esinw
125-129 F5.3 --- e_esinw Lower 1σ uncertainty in esinw
131-138 F8.6 d P Orbital period
140-146 E7.1 d E_P Upper 1σ uncertainty in P
148-154 E7.1 d e_P Lower 1σ uncertainty in P
156-165 F10.5 d T0 Time of primary transit minimum; BJD-2450000
167-173 F7.5 d E_T0 Upper 1σ uncertainty in T0
175-181 F7.5 d e_T0 Lower 1σ uncertainty in T0
183-189 F7.3 --- ALp Amplitude of planet's luminosity
191-196 F6.2 --- E_ALp Upper 1σ uncertainty in ALp
198-203 F6.2 --- e_ALp Lower 1σ uncertainty in ALp
205-209 F5.2 --- chi2 Reduced χ2 of model
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Note (1): Model type as follows:
1 = light curve with eccentricity fixed to zero in PDC analysis
2 = light curve with eccentricity fixed to zero in CLM analysis
3 = light curve with eccentricity allowed to Vary in PDC analysis
4 = light curve with eccentricity allowed to Vary in CLM analysis
PDC = Pre-search Data Conditioned analysis
CLM = analysis using the pixel-level data and our own photometric pipeline
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Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1 I1 --- Type [1-8] Model type (1)
3- 9 F7.2 --- KOI [1.01/1543.01] Kepler Object of Interest (2)
11- 17 F7.1 10-6 Lr Planet-to-star luminosity ratio in parts per
million
19- 25 F7.2 10-6 E_Lr Upper 1σ uncertainty in Lr
27- 33 F7.2 10-6 e_Lr Uncertainty in Lr
35- 39 F5.2 --- sig2 Detection significance of secondary eclipse (3)
41- 44 I4 K T0 Equilibrium temperature
46- 49 I4 K E_T0 Upper 1σ uncertainty in T0
51- 54 I4 K e_T0 Lower 1σ uncertainty in T0
56- 59 I4 K Teps0 Maximum effective temperature, assuming no albedo
or heat recirculation (T(ε=0))
61- 64 I4 K E_Teps0 Upper 1σ uncertainty in Teps=0
66- 69 I4 K e_Teps0 Lower 1σ uncertainty in Teps=0
71- 75 I5 K Tb Brightness temperature, assuming zero albedo
77- 80 I4 K E_Tb Upper 1σ uncertainty in Tb
82- 85 I4 K e_Tb Lower 1σ uncertainty in Tb
87- 92 F6.3 --- Tb/T0 Brightness to equilibrium temperature ratio
94- 98 F5.3 --- E_Tb/T0 Upper 1σ uncertainty in Tb/T0
100-104 F5.3 --- e_Tb/T0 Lower 1σ uncertainty in Tb/T0
106-110 F5.3 Rjup Rp Planetary radius; in Jupiter radii
112-116 F5.3 Rjup E_Rp Upper 1σ uncertainty in Rp
118-122 F5.3 Rjup e_Rp Lower 1σ uncertainty in Rp
124-129 F6.4 AU a System semi-major axis
131-136 F6.4 AU E_a Upper 1σ uncertainty in a
138-143 F6.4 AU e_a Lower 1σ uncertainty in a
145-150 F6.2 --- Amax Maximum possible geometric albedo
152-156 F5.2 --- E_Amax Upper 1σ uncertainty in Amax
158-162 F5.2 --- e_Amax Lower 1σ uncertainty in Amax
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Note (1): Model type as follows:
1 = light curve with eccentricity fixed to zero and stellar parameters
from the KIC, in PDC analysis
2 = light curve with eccentricity fixed to zero and stellar parameters
from isochrones. in PDC analysis
3 = light curve with eccentricity fixed to zero and stellar parameters
from the KIC, in CLM analysis
4 = light curve with eccentricity fixed to zero and stellar parameters
from isochrones, in CLM analysis
5 = light curve with eccentricity free and stellar parameters from KIC,
in PDC analysis
6 = light curve with eccentricity free and stellar parameters from
isochrones, in PDC analysis
7 = light curve with eccentricity free and stellar parameters from KIC,
in CLM analysis
8 = light curve with eccentricity free and stellar parameters from
isochrones, in CLM analysis
Note (2): The first two lines of this table are copied from the PDF version
and not from the "machine readable (MRT)" version.
Note (3): Negative values mean an increase of light at secondary eclipse,
instead of the expected decrease.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Sylvain Guehenneux [CDS] 12-Apr-2013