J/MNRAS/452/3561 Kepler eclipsing binary stars. K2 Campaign 0 (LaCourse+, 2015)
Kepler eclipsing binary stars.
VI. Identification of eclipsing binaries in the K2 Campaign 0 data set.
LaCourse D.M., Jek K.J., Jacobs T.L., Winarski T., Boyajian T.S.,
Rappaport S.A., Sanchis-Ojeda R., Conroy K.E., Nelson L., Barclay T.,
Fischer D.A., Schmitt J.R., Wang J., Stassun K.G., Pepper J.,
Coughlin J.L., Shporer A., Prsa A.
<Mon. Not. R. Astron. Soc., 452, 3561-3592 (2015)>
=2015MNRAS.452.3561L 2015MNRAS.452.3561L (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, eclipsing ; Planets ; Magnitudes
Keywords: techniques: photometric - binaries: eclipsing -
stars: fundamental parameters - stars: general - planetary systems -
stars: statistics
Abstract:
The original Kepler mission observed and characterized over 2400
eclipsing binaries (EBs) in addition to its prolific exoplanet
detections. Despite the mechanical malfunction and subsequent
non-recovery of two reaction wheels used to stabilize the instrument,
the Kepler satellite continues collecting data in its repurposed K2
mission surveying a series of fields along the ecliptic plane. Here,
we present an analysis of the first full baseline K2 data release: the
Campaign 0 data set. In the 7761 light curves we have identified a
total of 207 EBs. Of these, 97 are new discoveries that were not
previously identified. Our pixel-level analysis of these objects has
also resulted in identification of several false positives (observed
targets contaminated by neighbouring EBs), as well as the
serendipitous discovery of two short-period exoplanet candidates. We
provide catalogue cross-matched source identifications, orbital
periods, morphologies and ephemerides for these eclipsing systems. We
also describe the incorporation of the K2 sample into the Kepler
Eclipsing Binary Catalog, present spectroscopic follow-up observations
for a limited selection of nine systems and discuss prospects for
upcoming K2 campaigns.
Description:
Despite the new challenges inherent in working with currently
available K2 data, the overall quality of these light curves, when
properly decorrelated, is still well suited for the detection of EBs.
A total of 207 EBs are recovered by visual inspection of the K2 C0
data set. For the 97 newly identified EBs, we provide periods,
ephemerides, and cross-matched catalogue identifications.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 124 96 Previously known EBs in Campaign 0
table2.dat 126 69 New EPIC EBs in K2 Campaign 0
table3.dat 91 13 *M35 superstamp EBs in Campaign 0
table4.dat 100 29 Non-EPIC EBs in Campaign 0
table5.dat 19 9 Blended EBs in Campaign 0
table6.dat 66 18 *K2 C0 Eclipsing Binaries Observed by KELT-North
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Note on table3.dat: These EBs occupy C0 M35 TPFs.
Note on table6.dat: Table showing EBs that have light curves from the KELT
survey. Ephemeris from Tables 1 and 2. See Section 6 for details.
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See also:
V/133 : Kepler Input Catalog (Kepler Mission Team, 2009)
J/A+A/579/A19 : K2 Variable Catalogue (Armstrong+, 2015)
J/MNRAS/456/2260 : K2 Variability Catalogue II (Armstrong+, 2016)
J/AJ/141/83 : Eclipsing binaries in Kepler first data release (Prsa+ 2011)
J/AJ/142/160 : Kepler Mission. II. Eclipsing binaries (Slawson+, 2011)
J/AJ/147/45 : Kepler mission. IV. Close binaries (Conroy+, 2014)
J/PASP/126/914 : Kepler eclipsing binary stars. V. (Conroy+, 2014)
Byte-by-byte Description of file: table1.dat table2.dat
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Bytes Format Units Label Explanations
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1- 9 I9 --- EPIC EPIC identification number
11- 15 F5.2 mag Kepmag Kepler magnitude
17- 25 F9.5 deg RAdeg Right ascension (J2000)
27- 35 F9.5 deg DEdeg Declination (J2000)
37- 40 F4.2 --- Morph [0/1]?=- Morphology (1)
42- 50 F9.6 d Per ?=- Period
54- 62 F9.4 d BJD0 Time of deeper eclipse (BJD-2454833)
64-122 A59 --- CI Cross-matched identification
124-126 A3 --- Note Note (2)
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Note (1): Morphology values range between 0 (detached) and 1 (overcontact).
Note (2): Notes as follows:
1 = single eclipse observed in C0
2 = two primary eclipses observed in C0 (period unconfirmed)
3 = stellar Teff estimated from OMM observation (Section 5)
5 = Heartbeat binary candidate
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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- 5 A5 --- --- [2MASS]
7- 22 A16 --- 2MASS 2MASS name (HHMMSSss+DDMMSSs)
24- 28 F5.2 mag Kepmag Kepler magnitude
30- 37 F8.5 deg RAdeg Right ascension (J2000)
39- 46 F8.5 deg DEdeg Declination (J2000)
49- 53 F5.2 d Per ?=- Period
55- 63 F9.4 d BJD0 Time of deeper eclipse (BJD-2454833)
65- 73 I9 --- TPF Superstamp TPF identification number
75- 81 F7.4 deg RASdeg TPF source center pixel right ascension (J2000)
83- 89 F7.4 deg DESdeg TPF source center pixel declination (J2000)
91 I1 --- Note ? Note (1)
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Note (1): Notes as follows:
1 = two primary eclipses observed in C0 (period unconfirmed)
2 = listed in Nardiello et al. (2015, Cat. J/MNRAS/447/3536)
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- --- [2MASS]
7- 22 A16 --- 2MASS 2MASS name (HHMMSSss+DDMMSSs) (1)
24- 28 F5.2 mag Kepmag Kepler magnitude
30- 40 F11.7 deg RAdeg Right ascension (J2000)
43- 50 F8.5 deg DEdeg Declination (J2000)
53- 57 F5.2 d Per ?=- Period
59- 67 F9.4 d BJD0 Time of deeper eclipse (BJD-2454833)
69- 77 I9 --- EPIC Contaminated EPIC identification number
79- 88 F10.6 deg RAEdeg EPIC source right ascension (J2000)
91- 98 F8.5 deg DEEdeg EPIC source declination (J2000)
100 I1 --- Note ? Note (2)
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Note (1): These EBs occupy C0 TPF halo pixels; their eclipses contaminate the
noted EPIC target.
Note (2): Notes as follows:
1 = single primary eclipse observed in C0
2 = two primary eclipses observed in C0 (period unconfirmed)
3 = Heartbeat binary candidate
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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- 9 I9 --- EPIC1 EPIC ID (EB)
11- 19 I9 --- EPIC2 EPIC ID (blend)
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- KELT Kelt name (KN NNENNNNNN)
14- 22 I9 --- EPIC EPIC identification number
24- 28 F5.2 mag Kepmag Kepler magnitude
30- 38 F9.5 deg RAdeg Right ascension (J2000)
40- 47 F8.5 deg DEdeg Declination (J2000)
49- 56 F8.6 d Per Period
58- 66 F9.4 d BJD0 Time of deeper eclipse (BJD-2454833)
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History:
From electronic version of the journal
References:
Prsa et al., Paper I 2011AJ....141...83P 2011AJ....141...83P, Cat. J/AJ/141/83
Slawson et al., Paper II 2011AJ....142..160S 2011AJ....142..160S, Cat. J/AJ/142/160
Matijevic et al., Paper III 2012AJ....143..123M 2012AJ....143..123M
Conroy et al., Paper IV 2014AJ....147...45C 2014AJ....147...45C, Cat. J/AJ/147/45
Conroy et al. Paper V 2014PASP..126..914C 2014PASP..126..914C, Cat. J/PASP/126/914
Kirk et al., Paper VII 2016AJ....151...68K 2016AJ....151...68K, Cat. J/AJ/151/68
Abdul-Masih et al., Paper VIII 2016AJ....151..101A 2016AJ....151..101A, Cat. J/AJ/151/101
(End) Patricia Vannier [CDS] 11-Mar-2016