J/MNRAS/353/705 OGLE Variables in Magellanic Clouds (Ita+, 2004)
Variable stars in the Magellanic Clouds - II. The data and infrared properties.
Ita Y., Tanabe T., Matsunaga N., Nakajima Y., Nagashima C., Nagayama T.,
Kato D., Kurita M., Nagata T., Sato S., Tamura M., Nakaya H., Nakada Y.
<Mon. Not. R. Astron. Soc., 353, 705-712 (2004)>
=2004MNRAS.353..705I 2004MNRAS.353..705I
ADC_Keywords: Magellanic Clouds ; Stars, variable ; Photometry, infrared
Keywords: surveys - stars: AGB and post-AGB - stars: variables: other -
Magellanic Clouds - galaxies: stellar content - infrared: stars
Abstract:
The data of 8852 and 2927 variable stars detected by the OGLE survey
in the Large and Small Magellanic Clouds are presented. They are
cross-identified with the SIRIUS JHK survey data, and their infrared
properties are discussed. Variable red giants are well separated on
the period-(J-K) plane, suggesting that it could be a good tool to
distinguish their pulsation mode and type.
Description:
We cross-identified OGLE variables in the Magellanic Clouds (Zebrun et
al., 2001AcA....51..317Z 2001AcA....51..317Z) with the SIRIUS NIR sources that have been
detected in at least two of the three (JHKs) wavebands, and then
determined their pulsation periods by using the phase dispersion
minimization (PDM) technique (Stellingwerf, 1978ApJ...224..953S 1978ApJ...224..953S).
Details of the cross-identifications and period findings are described
in Paper I (Ita et al., 2004MNRAS.347..720I 2004MNRAS.347..720I).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
lmcvar.dat 76 8852 LMC catalog
smcvar.dat 76 2927 SMC catalog
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See also:
http://sirius.astrouw.edu.pl/~ogle : OGLE HomePage
Byte-by-byte Description of file: lmcvar.dat smcvar.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- --- [OGLE]
5- 22 A18 --- OGLE OGLE designation, HHMMSS.ss+DDMMSS.s, J2000
(OGLE JHHMMSS.ss+DDMMSS.s in Simbad)
24- 30 F7.3 d Per Pulsation period
32- 36 F5.3 --- theta [0/1] Statistical parameter calculated by the
phase dispersion minimization technique (1)
38- 42 F5.3 mag DIcmag Pulsation amplitude in Cousins I (Imax-Imin)
44- 49 F6.3 mag <Icmag> Intensity mean Cousins I magnitude
51- 56 F6.3 mag Jmag ?=99.999 SIRIUS J magnitude (1.25um)
58- 63 F6.3 mag Hmag ?=99.999 SIRIUS H magnitude (1.63um)
65- 70 F6.3 mag Ksmag ?=99.999 SIRIUS Ks magnitude (2.14um)
72- 76 F5.3 arcsec r Positional difference between SIRIUS and OGLE
coordinates
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Note (1): Theta is a measure of the regularity of the light variation,
being near 0 for the regular variation and near 1 for the irregular
variation.
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History:
From electronic version of the journal
References:
Ita et al., Paper I 2004MNRAS.347..720I 2004MNRAS.347..720I
(End) Patricia Vannier [CDS] 21-Mar-2005