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
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:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 50 21 OGLE-III Galactic disk fields maps/* 94 168 *OGLE-III photometric maps for individual subfields
Note on maps/* : Fields are divided into 8 sub-fields.
See also: ftp://sirius.astrouw.edu.pl/ogle/ogle3 : OGLE III Home Page Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
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
Byte-by-byte Description of file: maps/*
Bytes Format Units Label Explanations
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
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.
History: Copied at ftp://sirius.astrouw.edu.pl/ogle/ogle3/maps/gd/
(End) Patricia Vannier [CDS] 26-Mar-2011
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