J/AJ/144/24 The Kepler-INT survey (Greiss+, 2012)
Initial data release of the Kepler-INT Survey.
Greiss S., Steeghs D., Gaensicke B.T., Martin E.L., Groot P.J., Irwin M.J.,
Gonzalez-Solares E., Greimel R., Knigge C., Ostensen R.H., Verbeek K.,
Drew J.E., Drake J., Jonker P.G., Ripepi V., Scaringi S., Southworth J.,
Still M., Wright N.J., Farnhill H., van Haaften L.M., Shah S.
<Astron. J., 144, 24 (2012)>
=2012AJ....144...24G 2012AJ....144...24G
ADC_Keywords: Surveys ; Photometry, ugriz ; Photometry, UBV ;
Photometry, H-alpha
Keywords: catalogs - stars: emission-line, Be - stars: general - surveys -
techniques: photometric
Abstract:
This paper describes the first data release of the Kepler-INT Survey
(KIS) that covers a 116deg2 region of the Cygnus and Lyra
constellations. The Kepler field is the target of the most intensive
search for transiting planets to date. Despite the fact that the
Kepler mission provides superior time-series photometry, with an
enormous impact on all areas of stellar variability, its field lacks
optical photometry complete to the confusion limit of the Kepler
instrument necessary for selecting various classes of targets. For
this reason, we follow the observing strategy and data reduction
method used in the IPHAS and UVEX galactic plane surveys in order to
produce a deep optical survey of the Kepler field. This initial
release concerns data taken between 2011 May and August, using the
Isaac Newton Telescope on the island of La Palma. Four broadband
filters were used, U, g, r, i, as well as one narrowband one,
Hα, reaching down to a 10σ limit of ∼20th mag in the Vega
system. Observations covering ∼5 deg2, thus about half of the field,
passed our quality control thresholds and constitute this first data
release. We derive a global photometric calibration by placing the KIS
magnitudes as close as possible to the Kepler Input Catalog (KIC)
photometry. The initial data release catalog containing around 6
million sources from all the good photometric fields is available for
download from the KIS Web site (www.astro.warwick.ac.uk/research/kis/)
as well as via MAST (KIS magnitudes can be retrieved using the MAST
enhanced target search page
http://archive.stsci.edu/kepler/kepler_fov/search.php and also via
Casjobs at MAST Web site http://mastweb.stsci.edu/kplrcasjobs/).
Description:
The Kepler-INT (Isaac Newton Telescope) Survey (KIS) is a deep
5-filter optical survey of the Kepler field (a 116deg2 region of the
Cygnus and Lyra constellations), obtained with the 2.5m Isaac Newton
Telescope located in the Roque de los Muchachos Observatory on the
island of La Palma. Four broadband filters (Ugri) and one narrowband
filter (Hα) were used to obtain the INT data. This project
started taking data in 2011 and aims to obtain complete coverage of
the Kepler field of view by 2013. This initial release concerns data
taken between 2011 May and August and covers ∼50% of the Kepler field.
Data release 2 (May-August 2012) is now available from the KIS Web
site (www.astro.warwick.ac.uk/research/kis/) and includes all the
objects from the initial data release catalogue and covers ∼97% of the
Kepler field. The remaining ∼3% of the field will be completed once
the Kepler field is visible in 2013.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
kisdr2.dat 376 14476957 Extended Kepler-INT Survey (KIS) catalog (DR2)
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See also:
http://www.astro.warwick.ac.uk/research/kis/ : KIS Web site
V/133 : Kepler Input Catalog (Kepler Mission Team, 2009)
V/139 : The SDSS Photometric Catalog, Release 9 (Adelman-McCarthy+, 2012)
J/MNRAS/420/1115 : UV-excess sources from UVEX (Verbeek+, 2012)
J/AJ/142/160 : Kepler Mission. II. 2165 eclipsing binaries (Slawson+, 2011)
J/MNRAS/414/2860 : Kepler compact pulsator candidates (Ostensen+, 2011)
J/AJ/141/78 : Low-mass eclipsing binaries in KIC (Coughlin+, 2011)
J/ApJ/728/117 : Kepler planetary candidates. I. (Borucki+, 2011)
J/ApJ/736/19 : Kepler planetary candidates. II. (Borucki+, 2011)
J/ApJS/197/2 : Transit timing observations from Kepler. I. (Ford+, 2011)
J/A+A/529/A89 : Kepler satellite variability study (Debosscher+, 2011)
J/MNRAS/399/323 : Simulated UVEX colors with reddening (Groot+, 2009)
J/A+A/504/291 : Candidate Planetary Nebulae in IPHAS cat. (Viironen+, 2009)
J/A+A/480/409 : IPHAS symbiotic stars candidates (Corradi+, 2008)
Byte-by-byte Description of file: kisdr2.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- --- [KIS]
4- 22 A19 --- KIS Kepler-INT Survey (KIS) identifier
(JHHMMSS.ss+DDMMSS.s)
25- 34 F10.6 deg RAdeg Right ascension in decimal degrees (J2000)
36- 44 F9.6 deg DEdeg Declination in decimal degrees (J2000)
46- 51 F6.1 pix Ux CCD x pixel coordinate in U-band
53- 58 F6.1 pix Uy CCD y pixel coordinate in U-band
60- 65 F6.3 mag Umag ?=0 INT/WFC U magnitude (Vega system) (1)
67- 71 F5.3 mag e_Umag ?=0 Uncertainty in Umag (1)
73- 78 F6.3 mag s_Umag ?=-1 rms deviation in Umag (2)
80- 81 I2 --- Ucl [-9/1] Morphological class from U magnitude (3)
83- 88 F6.1 pix xg CCD x pixel coordinate in g-band
90- 95 F6.1 pix gy CCD y pixel coordinate in g-band
97-102 F6.3 mag gmag ?=0 INT/WFC g magnitude (Vega system) (1)
104-108 F5.3 mag e_gmag ?=0 Uncertainty in gmag (1)
110-115 F6.3 mag s_gmag ?=-1 rms deviation in gmag (2)
117-118 I2 --- gcl [-9/1] Morphological class from g magnitude (3)
120-125 F6.1 pix rx CCD x pixel coordinate in r-band
127-132 F6.1 pix ry CCD y pixel coordinate in r-band
134-139 F6.3 mag rmag ?=0 INT/WFC r magnitude (Vega system) (1)
141-145 F5.3 mag e_rmag ?=0 Uncertainty in rmag (1)
147-152 F6.3 mag s_rmag ?=-1 rms deviation in rmag (2)
154-155 I2 --- rcl [-9/1] Morphological class from r magnitude (3)
157-162 F6.1 pix ix CCD x pixel coordinate in i-band
164-169 F6.1 pix iy CCD y pixel coordinate in i-band
171-176 F6.3 mag imag ?=0 INT/WFC i magnitude (Vega system) (1)
178-182 F5.3 mag e_imag ?=0 Uncertainty in imag (1)
184-189 F6.3 mag s_imag ?=-1 rms deviation in imag (2)
191-192 I2 --- icl [-9/1] Morphological class from i magnitude (3)
194-199 F6.1 pix Hax CCD x pixel coordinate in Ha-band
201-206 F6.1 pix Hay CCD y pixel coordinate in Ha-band
208-213 F6.3 mag Hamag ?=0 INT/WFC Ha magnitude (Vega system) (1)
215-219 F5.3 mag e_Hamag ?=0 Uncertainty in Hamag (1)
221-226 F6.3 mag s_Hamag ?=-1 rms deviation in Hamag (2)
228-229 I2 --- Hacl [-9/1] Morphological class from Ha magnitude (3)
231 I1 --- CCD [1/4] The Wide Field Camera (WFC) CCD in which
the source was detected (1, 2, 3, or 4) (4)
233-236 F4.2 arcsec Usee Average seeing in U-band (5)
238-241 F4.2 arcsec gsee Average seeing in g-band (5)
243-246 F4.2 arcsec rsee Average seeing in r-band (5)
248-251 F4.2 arcsec isee Average seeing in i-band (5)
253-256 F4.2 arcsec Hasee Average seeing in Ha-band (5)
258-261 F4.2 --- Uell [0/1] Average ellipticity in U-band
263-266 F4.2 --- gell [0/1] Average ellipticity in g-band
268-271 F4.2 --- rell [0/1] Average ellipticity in r-band
273-276 F4.2 --- iell [0/1] Average ellipticity in i-band
278-281 F4.2 --- Haell [0/1] Average ellipticity in Ha-band
283-291 F9.3 d MJD.U Modified Julian Date of observation in U-band
293-301 F9.3 d MJD.g Modified Julian Date of observation in g-band
303-311 F9.3 d MJD.r Modified Julian Date of observation in r-band
313-321 F9.3 d MJD.i Modified Julian Date of observation in i-band
323-331 F9.3 d MJD.Ha Modified Julian Date of observation in Ha-band
333-338 F6.3 mag DUmag Difference in U-magnitude (6)
340-345 F6.3 mag Dgmag Difference in g-magnitude (6)
347-352 F6.3 mag Drmag Difference in r-magnitude (6)
354-359 F6.3 mag Dimag Difference in i-magnitude (6)
361-366 F6.3 mag DHamag Difference in Ha-magnitude (6)
368-376 I9 --- KIC Kepler Input Catalog (KIC) identifier (7)
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Note (1): In the case of two detections, the mean value is given. The filters
g, r, and i are SDSS-like filters. The U band is a non-standard U filter
and it is affected by the CCD detector response dropping toward its blue
edge. For more information on the U filter, see Verbeek et al. 2012,
Cat. J/MNRAS/420/1115 (Appendix B).
Note (2): For sources with two detections (rms=root-mean-square).
Note (3): Morphological flag as follows:
-9 = Saturated;
-8 = Poor match;
-7 = Contains bad pixels;
-1 = Stellar;
-2 = Probably stellar;
-3 = Compact but probably not stellar;
1 = Non-stellar (e.g., a galaxy);
0 = No detection.
Note (4): The WFC, mounted in the prime focus of the 2.5m Isaac Newton
Telescope, is an optical imager consisting of four
anti-reflective-coated 2048*4096 pixel CCDs.
Note (5): Of the Isaac Newton Telescope (INT) pointing.
Note (6): Between Kepler-INT Survey (KIS) and Kepler Input Catalog (KIC).
Applied to KIS data.
Note (7): If it does not have a KIC match within 1arcsec, the value is set to O.
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History:
Copied at https://files.warwick.ac.uk/kepler_int_survey/files/
KIScatalogueextended_v2.0.fits.gz (18/12/2012 version)
(End) Sylvain Guehenneux [CDS] 19-Sep-2013