J/AcA/49/223 BVI photometry of OGLE LMC Cepheids (Udalski+, 1999)
The Optical Lensing Experiment. Cepheids in the Magellanic Clouds.
IV. Catalog of Cepheids from the Large Magellanic Cloud.
Udalski A., Soszynski I., Szymanski M., Kubiak M., Pietrzynski G.,
Wozniak P., Zebrun K.
<Acta Astron., 49, 223 (1999)>
=1999AcA....49..223U 1999AcA....49..223U
ADC_Keywords: Magellanic Clouds ; Stars, variable ; Photometry, UBVRI
Keywords: Cepheids - Magellanic Clouds - catalogs
Abstract:
We present the Catalog of Cepheids from the LMC. The Catalog contains
1333 objects detected in the 4.5 square degree area of central parts
of the LMC. About 3.4*105 BVI measurements of these stars were
collected during the OGLE-II microlensing survey. The Catalog data
include period, BVI photometry, astrometry, and R21, phi21
parameters of the Fourier decomposition of I-band light curve.
The vast majority of objects from the Catalog are the classical
Cepheids pulsating in the fundamental or first overtone mode. The
remaining objects include Population II Cepheids and red giants with
pulsation-like light curves.
Tests of completeness performed in overlapping parts of adjacent
fields indicate that completeness of the Catalog is very high: >96%.
Statistics and distributions of basic parameters of Cepheids are also
presented.
Finally, we show the light curves of three eclipsing systems
containing Cepheid detected among objects of the Catalog.
All presented data, including individual BVI observations are
available from the OGLE Internet archive at URL:
ftp://sirius.astrouw.edu.pl/ogle/ogle2/var_stars/lmc/cep/catalog/
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
lmc_sc.dat 169 1435 *Catalog of Cepheids from the LMC_SC fields
table1.dat 29 21 Fields positions
table4.dat 37 105 Cross-identification of the same objects in
the Catalog
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Note on lmc_sc.dat: file lmc_sc.dat contains 1435 entries but only 1333 objects:
102 stars were detected twice, in overlapping parts of adjacent fields.
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See also:
I/221 : The Magellanic Catalogue of Stars - MACS (Tucholke+ 1996)
J/AcA/49/543 : OGLE LMC & SMC Cepheids VI photometry (Pietrzynski+ 1999)
J/AcA/49/437 : BVI photometry of OGLE SMC Cepheids (Udalski+, 1999)
Byte-by-byte Description of file: lmc_sc.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Field LMC-SC field designation (LMC-SC)
10- 15 I6 --- Seq Sequential number in the field
16- 17 I2 h RAh Right ascension (J2000)
18 A1 --- --- [:]
19- 20 I2 min RAm Right ascension (J2000)
21 A1 --- --- [:]
22- 26 F5.2 s RAs Right ascension (J2000)
28 A1 --- DE- Declination sign (J2000)
29- 30 I2 deg DEd Declination (J2000)
31 A1 --- --- [:]
32- 33 I2 arcmin DEm Declination (J2000)
34 A1 --- --- [:]
35- 38 F4.1 arcsec DEs Declination (J2000)
40- 47 F8.5 d Per Period
49- 61 F13.5 d HJD Heliocentric Julian Date at maximum brightness
63- 70 F8.5 [d] log10(P) log of the period
72- 77 F6.3 mag Imag ?=99.999 Mean I magnitude
79- 84 F6.3 mag Vmag ?=99.999 Mean V magnitude
86- 91 F6.3 mag Bmag ?=99.999 Mean B magnitude
93- 98 F6.3 mag B-V ?=9.999 Mean B-V colour index
100-104 F5.3 mag V-I ?=9.999 Mean V-I colour index
106-111 F6.3 mag WI ?=99.999 WI (I-1.55(V-I)) extinction
insensitive index
113-117 F5.3 mag E(B-V) Mean interstellar reddening
119-124 F6.3 mag I0mag Dereddened mean I magnitude
126-131 F6.3 mag V0mag ?=99.999 Dereddened mean V magnitude
133-138 F6.3 mag B0mag ?=99.999 Dereddened mean B magnitude
140-145 F6.3 mag B-V0 ?=9.999 Dereddened mean B-V colour index
147-152 F6.3 mag V-I0 ?=9.999 Dereddened mean V-I colour index
154-158 F5.3 --- R21 ?=9.999 Fourier parameter A2/A1
160-164 F5.3 rad phi21 ?=9.999 Fourier parameter phi2-2phi1
166-167 A2 --- Type Classification type (1)
169 A1 --- Note [*] *: Flag for double name (see table4.dat)
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Note (1): Classification of pulsating mode:
FU: classical Cepheid pulsating in the fundamental mode
FO: classical Cepheid pulsating in the first overtone
BR: object brighter than FO mode Cepheids
FA: object fainter than FU mode Cepheids
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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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1- 8 A8 --- Field LMC-SC field designation
10- 11 I2 h RAh Right ascension (J2000)
13- 14 I2 min RAm Right ascension (J2000)
16- 17 I2 s RAs Right ascension (J2000)
21 A1 --- DE- Declination sign (J2000)
22- 23 I2 deg DEd Declination (J2000)
25- 26 I2 arcmin DEm Declination (J2000)
28- 29 I2 arcsec DEs Declination (J2000)
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Field1 First LMC-SC field name
10- 15 I6 --- Seq1 Star number in field1
18- 20 A3 --- --- ←> Equivalence flag
23- 30 A8 --- Field2 Second LMC-SC field name
32- 37 I6 --- Seq2 Star number in field2
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History: Copied at
ftp://sirius.astrouw.edu.pl/ogle/ogle2/var_stars/lmc/cep/catalog/
(End) James Marcout, Patricia Bauer [CDS] 31-Jan-2000