J/AcA/51/221 OGLE-II. Cepheids in IC 1613 (Udalski+, 2001)
The optical gravitational lensing experiment. Cepheids in the galaxy IC 1613:
no dependence of the period-luminosity relation on metallicity.
Udalski A., Wyrzykowski L., Pietrzynski G., Szewczyk O., Szymanski M.,
Kubiak M., Soszynski I., Zebrun K.
<Acta Astron., 51, 221 (2001)>
=2001AcA....51..221U 2001AcA....51..221U
ADC_Keywords: Galaxies, photometry ; Stars, variable
Keywords: Cepheids - galaxies: individual: IC 1613 -
galaxies: distance and redshifts - distance scale
Abstract:
We present results of the search for Cepheids in the galaxy IC 1613
carried out as a sub-project of the OGLE-II microlensing survey. 138
Cepheids were found in the 14.2'x14.2' region in the center of the
galaxy. We present light curves, VI photometry and basic data for all
these objects, as well as color-magnitude diagram of the observed
field.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
ic1613.dat 87 19813 Mean photometry of all stars in the field
table1.dat 77 138 *Cepheids in IC 1613
iband/* . 91 Photometric data in I-band of detected Cepheids
vband/* . 132 Photometric data in V-band of detected Cepheids
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Note on table1.dat: Some light curve files were corrupted, so iband data are
missing for 47 Cepheids and vband data are missing for 6 Cepheids.
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See also:
J/A+A/383/398 : Cepheids multiphotometry (Paturel+, 2002)
J/A+A/367/759 : Variable stars in IC 1613 (Mantegazza+, 2001)
ftp://sirius.astrouw.edu.pl/ogle/ogle2/var_stars/ic1613 : Paper Home Page
Byte-by-byte Description of file: ic1613.dat
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Bytes Format Units Label Explanations
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2- 6 I5 --- [UWP2001] [1/19897] Star number
8- 14 F7.2 pix XVpos X position in the V-band template
16- 22 F7.2 pix YVpos Y position in the V-band template
24- 30 F7.2 pix XIpos X position in the I-band template
32- 38 F7.2 pix YIpos Y position in the I-band template
40- 45 F6.3 mag Vmag ?=99.999 V magnitude
47- 52 F6.3 mag V-I ?=9.999 V-I colour index
54- 59 F6.3 mag Imag ?=99.999 I magnitude
62- 63 I2 --- NgV Number of good observations for V band
66- 67 I2 --- NbV Number of bad observations for V band
69- 73 F5.3 --- sigV sigma of observations for V band
76- 77 I2 --- NgI Number of good observations for I band
80- 81 I2 --- NbI Number of bad observations for I band
83- 87 F5.3 --- sigI sigma of observations for I band
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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2- 6 I5 --- [UWP2001] Star number
8 I1 h RAh Right ascension (J2000.0)
10- 11 I2 min RAm Right ascension (J2000.0)
13- 17 F5.2 s RAs Right ascension (J2000.0)
19 A1 --- DE- Declination sign (J2000.0)
20 I1 deg DEd Declination (J2000.0)
22- 23 I2 arcmin DEm Declination (J2000.0)
25- 28 F4.1 arcsec DEs Declination (J2000.0)
31- 36 F6.3 d Per Period
39- 44 F6.3 mag Imag ?=99.999 I magnitude
47- 52 F6.3 mag Vmag ?=99.999 V magnitude
56- 60 F5.3 mag V-I ?=9.999 V-I colour index
63- 68 F6.3 mag WI ?=99.999 Interstellar extinction independent
index (Wasenheit index) (1)
71- 77 A7 --- Rem Remarks (VNN = [S71b] VNN in Simbad)
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Note (1): WI=I-1.55*(V-I)
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Byte-by-byte Description of file: iband/* vband/*
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Bytes Format Units Label Explanations
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3- 15 F13.5 d HJD Heliocentric Julian date
19- 24 F6.3 mag mag V or I magnitude
29- 33 F5.3 mag e_mag rms uncertainty on mag
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History:
Copied at ftp://sirius.astrouw.edu.pl/ogle/ogle2/var_stars/ic1613
(End) Patricia Bauer [CDS] 27-Jan-2003