J/AcA/48/147 OGLE SMC BVI photometry (Udalski+ 1998)
The Optical Gravitational Lensing Experiment. BVI maps of dense stellar regions.
I. The Small Magellanic Cloud.
Udalski A., Szymanski M., Kubiak M., Pietrzynski G., Wozniak P.,
Zebrun K.
<Acta Astron., 48, 147 (1998)>
=1998AcA....48..147U 1998AcA....48..147U (SIMBAD/NED BibCode)
ADC_Keywords: Magellanic Clouds ; Surveys ; Photometry, UBVRI
Keywords: Magellanic Clouds - surveys - catalogs - techniques: photometric
Abstract:
We present three color, BVI maps of the Small Magellanic Cloud. The
maps contain precise photometric and astrometric data for about
2.2million stars from the central regions of the SMC bar covering ∼2.4
square degrees on the sky. Mean brightness of stars is derived from
observations collected in the course of the OGLE-II microlensing
search from about 130, 30 and 15 measurements in the I, V and B-bands,
respectively. Accuracy of the zero points of photometry is about
0.01mag, and astrometry 0.15arcsec (with possible systematic error up
to 0.7arcsec). Color magnitude diagrams of observed fields are also
presented. The maps of the SMC are the first from the series of
similar maps covering other OGLE fields: LMC, Galactic bulge and
Galactic disk. The data are very well suited for many projects,
particularly for the SMC which has been neglected photometrically for
years.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
fields.dat 40 11 Summary of fields and FITS files (table1)
smc_sc1.dat 120 120002 SMC-SC1 BVI maps
smc_sc2.dat 120 107326 SMC-SC2 BVI maps
smc_sc3.dat 120 240045 SMC-SC3 BVI maps
smc_sc4.dat 120 198201 SMC-SC4 BVI maps
smc_sc5.dat 120 319850 SMC-SC5 BVI maps
smc_sc6.dat 120 326367 SMC-SC6 BVI maps
smc_sc7.dat 120 268006 SMC-SC7 BVI maps
smc_sc8.dat 120 211115 SMC-SC8 BVI maps
smc_sc9.dat 120 176832 SMC-SC9 BVI maps
smc_sc10.dat 120 140589 SMC-SC10 BVI maps
smc_sc11.dat 120 120932 SMC-SC11 BVI maps
mr17081.fit 2880 11652 I-band template image of the field SMC-SC1
mr17417.fit 2880 11652 I-band template image of the field SMC-SC2
mr17083.fit 2880 11652 I-band template image of the field SMC-SC3
mr17404.fit 2880 11652 I-band template image of the field SMC-SC4
mr17079.fit 2880 11652 I-band template image of the field SMC-SC5
mr17080.fit 2880 11652 I-band template image of the field SMC-SC6
mr17084.fit 2880 11652 I-band template image of the field SMC-SC7
mr17085.fit 2880 11652 I-band template image of the field SMC-SC8
mr17086.fit 2880 11652 I-band template image of the field SMC-SC9
mr17087.fit 2880 11652 I-band template image of the field SMC-SC10
mr17088.fit 2880 11652 I-band template image of the field SMC-SC11
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See also:
I/244 : OGLE General Catalog of Stars. I. (Szymanski+ 1996)
II/213 : OGLE Galactic Bulge periodic variables (Udalski+ 1996)
J/A+AS/112/407 : OGLE variables in Sculptor dwarf galaxy (Kaluzny+ 1995)
J/A+AS/125/343 : OGLE RR Lyr stars in omega Cen (Kaluzny+ 1997)
J/AcA/46/389 : OGLE miscellaneous variable stars (Olech 1996)
J/AcA/48/113 : OGLE RR Lyrae VI photometry (Udalski, 1998)
J/AcA/48/175 : OGLE SMC cluster (Pietrzynski+ 1998)
J/AcA/48/289 : OGLE-I long-period & non-periodic variables (Zebrun 1998)
J/AcA/54/1 : OGLE II SMC eclipsing binaries (Wyrzykowski+, 2004)
I/221 : The Magellanic Catalogue of Stars - MACS (Tucholke+ 1996)
Byte-by-byte Description of file: fields.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- --- [smc_sc]
7- 8 I2 --- SC [1,11] Field number
11- 12 I2 h RAh Right ascension of field center (J2000)
14- 15 I2 min RAm Right ascension of field center (J2000)
17- 18 I2 s RAs Right ascension of field center (J2000)
20 A1 --- DE- Declination sign of field center (J2000)
21- 22 I2 deg DEd Declination of field center (J2000)
24- 25 I2 arcmin DEm Declination of field center (J2000)
27- 28 I2 arcsec DEs Declination of field center (J2000)
30- 40 A11 --- FITSfile Name of FITS file with I-band template image
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Byte-by-byte Description of file: smc_sc*.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- SMC-SC Star number in the field (1)
8- 9 I2 h RAh Right ascension (J2000)
10 A1 --- --- [:]
11- 12 I2 min RAm Right ascension (J2000)
13 A1 --- --- [:]
14- 18 F5.2 s RAs Right ascension (J2000)
20 A1 --- DE- Declination sign (J2000)
21- 22 I2 deg DEd Declination (J2000)
23 A1 --- --- [:]
24- 25 I2 arcmin DEm Declination (J2000)
26 A1 --- --- [:]
27- 30 F4.1 arcsec DEs Declination (J2000)
32- 38 F7.2 pix Xpos X position in the I-band template image
40- 46 F7.2 pix Ypos Y position in the I-band template image
48- 53 F6.3 mag Vmag ?=99.999 V magnitude
55- 60 F6.3 mag B-V ?=9.999 B-V colour index
62- 67 F6.3 mag V-I ?=9.999 V-I colour index
69- 74 F6.3 mag Bmag ?=99.999 B magnitude
76- 81 F6.3 mag Imag ?=99.999 I magnitude
84- 85 I2 --- o_Bmag Number of observations in B band
87- 88 I2 --- rBmag Number of rejected observations in B band
90- 94 F5.3 mag e_Bmag ?=9.999 rms uncertainty on Bmag
97- 98 I2 --- o_Vmag Number of observations in V band
100-101 I2 --- rVmag Number of rejected observations in V band
103-107 F5.3 mag e_Vmag ?=9.999 rms uncertainty on Vmag
109-111 I3 --- o_Imag Number of observations in I band
113-114 I2 --- rImag Number of rejected observations in I band
116-120 F5.3 mag e_Imag ?=9.999 rms uncertainty in Imag
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Note (1): OGLE SMC-SCNN NNNNNN in Simbad
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History: Copied from ftp://astro.princeton.edu/ogle/ogle2/maps/smc/
(End) James Marcout, Patricia Bauer [CDS] 19-Nov-1998