J/PASP/126/914 Kepler eclipsing binary stars. V. (Conroy+, 2014)
Kepler eclipsing binary stars.
V. Identification of 31 candidate eclipsing binaries in the K2 engineering
dataset.
Conroy K.E., Prsa A., Stassun K.G., Bloemen S., Parvizi M., Quarles B.,
Boyajian T., Barclay T., Shporer A., Latham D.W., Abdul-Masih M.
<Publ. Astron. Soc. Pac. 126, 914 (2014)>
=2014PASP..126..914C 2014PASP..126..914C
ADC_Keywords: Binaries, eclipsing
Keywords: astrophysical data
Abstract:
Over 2500 eclipsing binaries were identified and characterized from
the ultraprecise photometric data provided by the Kepler space
telescope. Kepler is now beginning its second mission, K2, which is
proving to again provide ultraprecise photometry for a large sample of
eclipsing binary stars. In the 1951 light curves covering 12 days in
the K2 engineering dataset, we have identified and determined the
ephemerides for 31 candidate eclipsing binaries that demonstrate the
capabilities for eclipsing binary science in the upcoming campaigns in
K2. Of those, 20 are new discoveries. We describe both manual and
automated approaches to harvesting the complete set of eclipsing
binaries in the K2 data, provide identifications and details for the
full set of candidate eclipsing binaries present in the engineering
dataset, and discuss the prospects for application of eclipsing binary
searches in the K2 mission.
Description:
Unlike the main Kepler mission that focused on a predetermined set
of targets within the fixed field of view, the targets for each K2
campaign are solicited from the community, with ∼10000 long-cadence
(29.43 minute) and ∼100 short-cadence (54.2s) targets selected for
observations from each field (Howell et al., 2014PASP..126..398H 2014PASP..126..398H).
The Kepler Eclipsing Binary Working Group contributes a selection
of science targets based on a cross-check of all objects in each K2
campaign field with available variable and binary star catalogs. One
hundred and sixty four of 7757 targets selected for observation in
campaign 0 and 49 of 21647 targets in campaign 1 were preidentified as
eclipsing binaries (EBs).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 19 31 Masks for candidate eclipsing binaries in K2
table2.dat 65 31 Candidate eclipsing binaries in K2
table3.dat 17 6 Blended Candidate EBs in K2
table4.dat 117 31 Cross-matched identifications for candidate
eclipsing binaries in K2
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See also:
V/133 : Kepler Input Catalog (Kepler Mission Team, 2009)
J/AJ/141/83 : Kepler eclipsing binary stars. I. (Prsa+, 2011)
J/AJ/142/160 : Kepler eclipsing binary stars. II. (Slawson+, 2011)
J/AJ/147/45 : Kepler eclipsing binary stars. IV. (Conroy+, 2014)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 8 I8 --- Kep Kepler identification
10- 12 I3 --- Pix [4/267] Pixels in mask
14- 19 F6.4 --- Std Standard deviation around polynomial fit
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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- 8 I8 --- Kep Kepler identification
10- 14 F5.2 mag Kepmag Kepler magnitude
16- 25 F10.6 deg RAdeg Right ascension (J2000)
27- 35 F9.6 deg DEdeg Declination (J2000)
37- 40 F4.2 --- Mph [0/1]?=- Detached/contact morphology (1)
42- 48 F7.5 d Per [0.1/4.8]?=- Period (days)
50- 59 F10.4 d BJD0 Eclipse Barycentric Julian date (BJD0-2400000)
61- 64 F4.2 --- EBF [0.6/1]?=- Eclipsing Binary Factory confidence
65 A1 --- n_EBF [a] Renormalized EBF (2)
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Note (1): The light curves are phase-folded and fit by a chain of four
quadratic functions that describe the shape of the phased light curve
(Fig. 5), as described in Prsa et al. (2011AJ....141...83P 2011AJ....141...83P, Cat. J/AJ/141/83).
This analytic function is then used to determine the morphology,
a value between zero (detached) and one (overcontact), using locally linear
embedding (Matijevic et al., 2012AJ....143..123M 2012AJ....143..123M).
Note (2): a: Confidence value was renormalized after excluding the primary
classification of "misc."
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 I8 --- Kep Kepler identification (EB)
10- 17 I8 --- Kep2 Kepler identification (blend)
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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- 8 I8 --- Kep Kepler identification
9 A1 --- n_Kep [ab] Note on Kep (3)
11- 36 A26 --- SName1 Simbad name of first object within 1' (4)
38- 51 A14 --- SType1 Simbad classification of first object
within 1' (5)
53 A1 --- --- [;]
55- 75 A21 --- SName2 Simbad name of second object within 1' (4)
78- 90 A13 --- SType2 Simbad classification of second object
within 1' (5)
92 A1 --- --- [;]
94-114 A21 --- SName3 Simbad name of third object within 1' (4)
117 A1 --- SType3 Simbad classification of third object
within 1' (5)
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Note (3): Note as follows:
a = Kepler identification is listed as an EB in K2 engineering target list.
b = Identified by Poleski et al. (4010ApJS..189..134P; Table 1, line 5) as
an SB1 EB with a period of 4.72277 days.
Note (4): Name origins:
2MASS = Two Micron All Sky Survey
1RXS = 1st ROSAT (ROentgen SATellite) X-ray Survey
1SWASP = Super Wide Angle Search for Planets
SDSS = Sloan Digital Sky Survey
TYC = Tycho mission
PB = Palomar obs. Berger
NSVS = Northern Sky Variability Survey
BD = Bonner Durchmusterung
Note (5): All Simbad object types are defined at
http://simbad.u-strasbg.fr/simbad/sim-display?data=otypes :
X = X-ray source
V* = variable star
PMS = premain sequence star
low-mass* = star below solar mass
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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
LaCourse et al., Paper VI 2015MNRAS.452.3561L 2015MNRAS.452.3561L, Cat. J/MNRAS/452/3561
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] 29-Jan-2015