J/ApJ/813/100 Deep GALEX NUV survey of the Kepler field. I. (Olmedo+, 2015)
Deep GALEX UV survey of the Kepler field.
I. Point source catalog.
Olmedo M., Lloyd J., Mamajek E.E., Chavez M., Bertone E., Martin D.C.,
Neill J.D.
<Astrophys. J., 813, 100 (2015)>
=2015ApJ...813..100O 2015ApJ...813..100O (SIMBAD/NED BibCode)
ADC_Keywords: Photometry, ultraviolet ; Cross identifications ;
Photometry, SDSS ; Photometry, infrared
Keywords: catalogs; stars: activity; stars: chromospheres;
techniques: photometric; ultraviolet: stars
Abstract:
We report observations of a deep near-ultraviolet (NUV) survey of the
Kepler field made in 2012 with the Galaxy Evolution Explorer (GALEX)
Complete All-Sky UV Survey Extension (CAUSE). The GALEX-CAUSE Kepler
survey (GCK) covers 104 square degrees of the Kepler field and reaches
a limiting magnitude of NUV~=22.6 at 3σ. Analysis of the GCK
survey has yielded a catalog of 660928 NUV sources, of which 475164
are cross-matched with stars in the Kepler Input Catalog.
Approximately 327 of 451 confirmed exoplanet host stars and 2614 of
4696 candidate exoplanet host stars identified by Kepler have NUV
photometry in the GCK survey. The GCK catalog should enable the
identification and characterization of UV-excess stars in the Kepler
field (young solar-type and low-mass stars, chromospherically active
binaries, white dwarfs, horizontal branch stars, etc.), and
elucidation of various astrophysics problems related to the stars and
planetary systems in the Kepler field.
Description:
As part of the Galaxy Evolution Explorer (GALEX) Complete All-Sky UV
Survey Extension (CAUSE) survey, Cornell University funded 300 orbits
to complete the spatial coverage of the Kepler field through 2012
August-September (PI J. Lloyd).
The GALEX-CAUSE Kepler Catalog (GCK) has 660928 NUV sources which are
contained in Table 4. A subsample of this catalog is contained in
Table 5, composed of 327 GCK objects with counter-parts in the Kepler
Input Catalog hosting confirmed exoplanets.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table4.dat 157 660928 GALEX CAUSE Kepler (GCK) catalog
table5.dat 156 327 NUV magnitudes and ancillary data for Kepler
targets with confirmed exoplanets
--------------------------------------------------------------------------------
See also:
II/319 : UKIDSS-DR9 LAS, GCS and DXS Surveys (Lawrence+ 2012)
II/312 : GALEX-DR5 (GR5) sources from AIS and MIS (Bianchi+ 2011)
V/133 : Kepler Input Catalog (Kepler Mission Team, 2009)
J/A+A/572/A34 : Pulsating solar-like stars in Kepler (Garcia+, 2014)
J/ApJS/211/24 : Rotation periods of Kepler MS stars (McQuillan+, 2014)
J/ApJS/211/2 : Revised properties of Q1-16 Kepler targets (Huber+, 2014)
J/AJ/147/119 : Sources in the Kepler field of view (Coughlin+, 2014)
J/MNRAS/436/1883 : Properties of KOI host stars (Walkowicz+, 2013)
J/A+A/560/A4 : Rotation periods of active Kepler stars (Reinhold+, 2013)
J/AJ/144/24 : The Kepler-INT survey (Greiss+, 2012)
J/AJ/142/112 : KIC photometric calibration (Brown+, 2011)
J/ApJ/687/1264 : Age estimation for solar-type dwarfs (Mamajek+, 2008)
http://kepler.nasa.gov/ : Kepler home page
http://galex.stsci.edu/GR6/ : GALEX GR6/7 Data Release home page
Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 A3 --- --- [GCK]
5- 21 A17 --- GCK GALEX CAUSE Kepler (GCK) Identifier
(JHHMMSSss+DDMMSSs)
23- 31 F9.5 deg RAdeg [279.5/302] Right Ascension (J2000)
33- 40 F8.5 deg DEdeg [36.6/52.5] Declination (J2000)
42- 47 F6.3 mag NUVmag [12.2/25.7] Calibrated NUV AB magnitude
49- 53 F5.3 mag e_NUVmag Uncertainty in NUVmag
55- 62 F8.3 mag NUVmagc ?=-999.99 Corrected calibrated NUV
AB magnitude (1)
64- 71 F8.3 mag e_NUVmagc ?=-999.99 Uncertainty in NUVmagc
73- 80 F8.3 ct/s FNUV [0.006/1369] NUV flux
82- 86 F5.3 ct/s e_FNUV Uncertainty in FNUV
88- 94 F7.2 --- NUVsn [0.2/1669] Signal-to-noise ratio
of NUV flux
96-101 F6.3 mag NUVmagbg [24.8/32.2]?=-9.99 Background surface
brightness at source position,
AB magnitude
103-107 F5.3 ct/s/arcsec2 FNUVbg [0/0.02] Background NUV flux at source
position
109-114 F6.1 s NUVexp [123/3410] Effective exposure time at
source position
116-120 F5.3 deg dRad [0.001/1.4] Distance of source from
center of tile
122-124 I3 --- Flag [0/571] Logical OR of artifact flags (2)
126-133 I8 --- key ? Sequential number in CasJobs Kepler
Colors Table of match (ktswckey)
135-142 I8 --- KIC [891901/12984375]? Kepler Input Catalog
identifier of match
144-149 A6 --- scan GCK scan number
151-157 A7 --- img GCK image number
--------------------------------------------------------------------------------
Note (1): Corrected with Camarota & Holberg (2014MNRAS.438.3111C 2014MNRAS.438.3111C) calibration
Note (2): The logical "OR" (sum) of the artifact flags (from Table 2):
1 = 'edge', Detector bevel edge reflection
2 = 'window', Detector window reflection
4 = 'dichroic', Dichroic reflection
8 = 'varpix', Variable pixel based on time slices
16 = 'brtedge', Bright star near field edge
32 = 'detector rim', Proximity, >0.6 degrees from field center
64 = 'dimask', Dichroic reflection artifact mask flag
128 = 'varmask', Masked pixel determined by varpix
256 = 'hot mask', Detector hot spots
512 = 'yaghost', Possible ghost image from YA slope
Artifacts 64, 128 and 256 do not apply to the GCK catalog.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table5.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 A3 --- --- [GCK]
5- 21 A17 --- GCK GALEX CAUSE Kepler (GCK) Identifier
(JHHMMSSss+DDMMSSs)
23- 31 F9.5 deg RAdeg Right Ascension in Decimal Degrees (J2000)
33- 40 F8.5 deg DEdeg Declination in Decimal Degrees (J2000)
42- 47 F6.3 mag NUVmag [13/24.1] Calibrated NUV (AB) magnitude
49- 53 F5.3 mag e_NUVmag Uncertainty in NUV
55- 62 F8.3 mag NUVmagc ?=-999.99 Corrected calibrated NUV
AB magnitude (1)
64- 71 F8.3 mag e_NUVmagc ?=-999.99 Uncertainty in cNUV
73- 78 F6.2 --- NUVsn [0.8/834] Signal-to-noise ratio of NUV flux
80- 87 I8 --- KIC [1871056/12735740] Kepler Input Catalog
identifier of match
89- 95 A7 --- --- [Kepler-]
96- 98 I3 --- Kepler ? Kepler host star number
100 A1 --- m_Kepler [A] Kepler component
102-107 F6.3 mag Kpmag [8.7/16] Kepler-band AB magnitude (2)
109-114 F6.3 mag gmag [9/16.6] SDSS g-band AB magnitude (2)
116-121 F6.3 mag rmag [8.7/16] SDSS r-band AB magnitude (2)
123-128 F6.3 mag imag [8.6/16.4]? SDSS i-band AB magnitude (2)
130-135 F6.3 mag zmag [8.6/16.7]? SDSS z-band AB magnitude (2)
137-142 F6.3 mag Jmag [7.7/16.4] 2MASS J Vega magnitude
144-149 F6.3 mag Hmag [7.5/15.8] 2MASS H Vega magnitude
151-156 F6.3 mag Kmag [7.4/16.7] 2MASS K Vega magnitude
--------------------------------------------------------------------------------
Note (1): Corrected with Camarota & Holberg (2014MNRAS.438.3111C 2014MNRAS.438.3111C) calibration.
Note (2): From the Kepler Input Catalog (V/133)
--------------------------------------------------------------------------------
Acknowledgements:
Manuel Olmedo [INAOE]
History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 16-Feb-2016