J/MNRAS/421/2342 4 Kepler systems transit timing observations (Steffen+, 2012)
Transit timing observations from Kepler.
III. Confirmation of four multiple planet systems by a Fourier-domain study
of anticorrelated transit timing variations.
Steffen J.H., Fabrycky D.C., Ford E.B., Carter J.A., Desert J.-M.,
Fressin F., Holman M.J., Lissauer J.J., Moorhead A.V., Rowe J.F.,
Ragozzine D., Welsh W.F., Batalha N.M., Borucki W.J., Buchhave L.A.,
Bryson S., Caldwell D.A., Charbonneau D., Ciardi D.R., Cochran W.D.,
Endl M., Everett M.E., Gautier III T.N., Gilliland R.L., Girouard F.R.,
Jenkins J.M., Horch E., Howell S.B., Isaacson H., Klaus T.C., Koch D.G.,
Latham D.W., Li J., Lucas P., MacQueen P.J., Marcy G.W., McCauliff S.,
Middour C.K., Morris R.L., Mullally F.R., Quinn S.N., Quintana E.V.,
Shporer A., Still M., Tenenbaum P., Thompson S.E., Twicken J.D.,
Van Cleve J.
<Mon. Not. R. Astron. Soc., 421, 2342-2354 (2012)>
=2012MNRAS.421.2342S 2012MNRAS.421.2342S
ADC_Keywords: Stars, double and multiple ; Planets
Keywords: methods: data analysis - celestial mechanics -
stars: individual: KIC 4349452 - stars: individual: KIC 9757613 -
stars: individual: KIC 5792202 - stars: individual: KIC 6949607
Abstract:
We present a method to confirm the planetary nature of objects in
systems with multiple transiting exoplanet candidates. This method
involves a Fourier-domain analysis of the deviations in the transit
times from a constant period that result from dynamical interactions
within the system. The combination of observed anticorrelations in the
transit times and mass constraints from dynamical stability allow us
to claim the discovery of four planetary systems, Kepler-25,
Kepler-26, Kepler-27 and Kepler-28, containing eight planets and one
additional planet candidate.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 101 5 Key properties of host stars
table3.dat 73 9 Key properties of planets and planet candidates
tablea1.dat 73 7 Warm-Spitzer observations of KOI-244.01,
KOI-244.02 and KOI-250.02 at 4.5um
table1.dat 34 474 Transit times for Kepler transiting planet candidates
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See also:
V/133 : Kepler Input Catalog (Kepler Mission Team, 2009)
J/ApJ/728/117 : Kepler planetary candidates. I. (Borucki+, 2011)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- KOI Star KOI number (NNN)
5- 6 I2 --- Kepler Kepler system number (Kepler-NN)
9- 15 I7 --- KIC ?=- KIC number
17- 22 F6.3 mag Kpmag ?=- Kepler magnitude
24- 28 F5.3 --- Cont ?=- Contamination (1)
30- 33 I4 K Teff Effective temperature
35- 37 I3 K e_Teff ? rms uncertainty on Teff
39- 42 F4.2 [cm/s2] logg Surface gravity
44- 47 F4.2 [cm/s2] e_logg ? rms uncertainty on logg
49- 53 F5.2 [Sun] [M/H] Metallicity
55- 58 F4.2 [Sun] e_[M/H] ? rms uncertainty on [M/H]
60- 64 F5.2 km/s vsini ? Rotational velocity
66- 69 F4.2 km/s e_vsini ? rms uncertainty on vsini
71- 74 F4.2 Rsun R* ? Stellar radius
77- 80 F4.2 Rsun e_R* ? rms uncertainty on R*
82- 85 F4.2 Msun M* ? Stellar mass
87- 90 F4.2 Msun e_M* ? rms uncertainty on M*
92-101 A10 --- Source Source (2)
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Note (1): Contamination values come from the KIC except KOI-841 which
includes the effects of the non-KIC star seen in high-resolution imaging.
Note (2): Quoted uncertainties do not include systematic uncertainties due
to stellar models. Values with no stated uncertainties are from the KIC.
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 6 F6.2 --- KOI Planet KOI number (NNN.NN)
8- 14 A7 --- --- [Kepler-]
15- 17 A3 --- Kepler Kepler system number, Kepler-NNa
19- 25 F7.4 d Ep Epoch (BJD-2454900)
27- 33 F7.4 d Per Period
35- 38 F4.2 h Tdur Transit duration (1)
40- 42 F3.1 Rgeo Rp Planet radius (in earth radius) (1)(2)
44- 48 F5.3 AU a Semi-major axis (1)(2)
50- 52 I3 --- nTT Number of transit times measured in Q0-6
54- 59 F6.4 d e_TT rms uncertainty on transit time
61- 66 F6.4 d MAD Median absolute deviation from linear
ephemeris measured during Q0-6
68- 73 F6.3 Mjup Mp.max ?=- Maximum planet mass, Based on the
assumption of dynamical stability and
stellar mass from Table 2
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Note (1): From Borucki et al. (2011, Cat. J/ApJ/736/19).
Note (2): Updated to reflect stellar properties from Table 2.
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Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 6 F6.2 --- KOI Planet KOI number (NNN.NN)
8- 17 A10 --- AOR Astronomical Observation Request
19- 28 A10 "YYYY-MM-DD" ObsDate Observation date (UT)
30- 37 F8.4 d BJD Barycentric Julian date (BJD-2454900)
39- 42 I4 --- Npt Number of selected points
44- 48 F5.3 --- Rp/R* Relative planet radius
50- 54 F5.3 --- E_Rp/R* Error on Rp/R* (upper value)
56- 60 F5.3 --- e_Rp/R* Error on Rp/R* (lower value)
62- 65 I4 ppm Depth ? Transit depth (10-6)
67- 69 I3 ppm E_Depth ? Error on Depth (upper value)
71- 73 I3 ppm e_Depth ? Error on Depth (lower value)
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 6 F6.2 --- KOI Planet KOI number (NNN.NN)
8- 10 I3 --- n [0/139] Transit number
12- 19 F8.4 d tn Time of transit (BJD-2454900)
21- 27 F7.4 d TTVn Transit timing variations
29- 34 F6.4 d e_TTVn rms uncertainty on TTVn
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History:
From electronic version of the journal
References:
Ford et al. Paper I. 2011ApJS..197....2F 2011ApJS..197....2F Cat. J/ApJS/197/2
Ford et al. Paper II. 2012ApJ...750..113F 2012ApJ...750..113F Cat. J/ApJ/750/113
Ford et al. Paper IV. 2012ApJ...750..114F 2012ApJ...750..114F Cat. J/ApJ/750/114
Ford et al. Paper V. 2012ApJ...756..185F 2012ApJ...756..185F
Steffen et al. Paper VI. 2012ApJ...756..186S 2012ApJ...756..186S
Steffen et al. Paper VII. 2013MNRAS.428.1077S 2013MNRAS.428.1077S
Mazeh et al. Paper VIII. 2013ApJS..208...16M 2013ApJS..208...16M Cat. J/ApJS/208/16
Holczer et al. Paper IX. 2016ApJS..225....9H 2016ApJS..225....9H Cat. J/ApJS/225/9
(End) Patricia Vannier [CDS] 04-Mar-2013