J/AcA/60/295 VI photometry of Galactic disk field stars (Szymanski+, 2010)
The Optical Gravitational Lensing Experiment.
OGLE-III photometric maps of the Galactic disk fields.
Szymanski M.K., Udalski A., Soszynski I., Kubiak M., Pietrzynski G.,
Poleski R., Wyrzykowski L., Ulaczyk K.
<Acta Astron., 60, 295-304 (2010)>
=2010AcA....60..295S 2010AcA....60..295S
ADC_Keywords: Surveys ; Stars, variable ; Photometry
Keywords: Galaxy: disk - surveys - catalogs - techniques: photometric
Abstract:
We present OGLE-III Photometric Maps of the Galactic disk fields
observed during the OGLE-III campaigns for low luminosity transiting
objects that led to the discovery of the first transiting exoplanets.
The maps contain precise, calibrated VI photometry of about 9 million
stars from 21 OGLE-III fields in the Galactic disk observed in the
years 2002-2009 and covering more than 7 square degrees in the sky.
Precise astrometry of these objects is also provided.
We discuss quality of the data and present a few color-magnitude
diagrams of the observed fields.
Description:
The photometric data presented in this paper were collected during the
OGLEIII phase between February 2002 and May 2009 with the 1.3-m Warsaw
Telescope at Las Campanas Observatory, Chile, operated by the Carnegie
Institution of Washington. The telescope was equipped with the eight
chip mosaic camera covering approximately 35x35arcmin in the sky with
the scale of 0.26arcsec/pixel. Observations were carried out in
V- and I-band filters closely resembling the standard bands.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 50 21 OGLE-III Galactic disk fields
maps/* . 168 *OGLE-III photometric maps for individual subfields
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Note on maps/* : Fields are divided into 8 sub-fields.
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See also:
ftp://sirius.astrouw.edu.pl/ogle/ogle3 : OGLE III Home Page
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- Field Field name
8- 9 I2 h RAh Right ascension (J2000.0)
11- 12 I2 min RAm Right ascension (J2000.0)
14- 15 I2 s RAs Right ascension (J2000.0)
17 A1 --- DE- Declination sign (J2000.0)
18- 19 I2 deg DEd Declination (J2000.0)
21- 22 I2 arcmin DEm Declination (J2000.0)
24- 25 I2 arcsec DEs Declination (J2000.0)
28- 35 F8.4 deg GLON Galactic longitude
37- 43 F7.4 deg GLAT Galactic latitude
45- 50 I6 --- NStars Number of stars in the field
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Byte-by-byte Description of file: maps/*
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Bytes Format Units Label Explanations
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1- 6 I6 --- Seq Sequential number within the sub-field (2)
8- 9 I2 h RAh Right ascension (J2000.0)
10 A1 --- --- [:]
11- 12 I2 min RAm Right ascension (J2000.0)
13 A1 --- --- [:]
14- 18 F5.2 s RAs Right ascension (J2000.0)
20 A1 --- DE- Declination sign (J2000.0)
21- 22 I2 deg DEd Declination (J2000.0)
23 A1 --- --- [:]
24- 25 I2 arcmin DEm Declination (J2000.0)
26 A1 --- --- [:]
27- 30 F4.1 arcsec DEs Declination (J2000.0)
32- 38 F7.2 pix Xpos X position in the I-band reference image
40- 46 F7.2 pix Ypos Y position in the I-band reference image
48- 53 F6.3 mag Vmag ?=99.999 V magnitude
55- 60 F6.3 mag V-I ?=9.999 V-I colour index
62- 67 F6.3 mag Imag ?=99.999 I magnitude
69- 71 I3 --- VNp Number of points for average V magnitude (1)
73- 74 I2 --- Vbad Number of 5σ removed points in V
76- 80 F5.3 --- Vsig ?=9.999 Sigma of magnitude for V-band
82- 85 I4 --- INp Number of points for average I magnitude
87- 88 I2 --- Ibad Number of 5σ removed points in I
90- 94 F5.3 --- Isig ?=9.999 Sigma of magnitude for I-band
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Note (1): Value of -1 indicates multiple V-band cross-identification
(when the V-band counterpart was detected in more than one field in
overlaping areas; the average magnitude is the mean of the merged
datasets).
Note (2): Sources identified as OGLE-III CCCNNN.N NNNNN in Simbad.
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History:
Copied at ftp://sirius.astrouw.edu.pl/ogle/ogle3/maps/gd/
(End) Patricia Vannier [CDS] 26-Mar-2011