J/AcA/48/289 OGLE-I long-period and non-periodic variables (Zebrun 1998)
Search for long-period and non-periodic variable stars in the OGLE-I databases
Zebrun K.
<Acta Astron., 48, 289 (1998>
=1998AcA....48..289Z 1998AcA....48..289Z (SIMBAD/NED BibCode)
ADC_Keywords: Stars, variable ; Photometry, VRI
Keywords: stars: variable: other - catalogs
Abstract:
We present a list of long-period and non-periodic variable stars
detected in the OGLE-I database. These stars were not included in
previous catalogs of periodic stars found in OGLE data. The catalog
contains 116 stars in twelve Baade's Window fields and additionally in
the Galactic bulge fields: MM1/5/7-A/B, MM3 and GB1.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 56 116 Long-term variable stars in the Galactic bulge
imag.dat 38 16567 I-band photometry
vmag.dat 38 2405 V-band photometry
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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/48/147 : OGLE SMC BVI photometry (Udalski+ 1998)
J/AcA/48/175 : OGLE SMC clusters (Pietrzynski+ 1998)
I/221 : The Magellanic Catalogue of Stars - MACS (Tucholke+ 1996)
Table 1: Coordinates of the OGLE-I fields
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Field RA (2000) DE GLON GLAT
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BWC 18 03 24 -30 02 00 1.0 -3.9
BW1 18 02 24 -29 49 05 1.1 -3.6
BW2 18 02 24 -30 15 05 0.7 -3.8
BW3 18 04 24 -30 15 05 0.9 -4.2
BW4 18 04 24 -30 49 05 1.3 -4.0
BW5 18 02 24 -30 02 05 0.9 -3.7
BW6 18 03 24 -30 15 05 0.8 -4.0
BW7 18 04 24 -30 02 05 1.1 -4.1
BW8 18 03 24 -29 49 05 1.2 -3.8
MM5-A 17 47 30 -34 45 00 -4.8 -3.4
MM5-B 17 47 30 -34 57 00 -4.9 -3.5
MM7-A 18 10 53 -25 54 20 5.4 -3.3
MM7-B 18 11 47 -25 54 20 5.5 -3.5
BW9 18 00 50 -29 49 05 0.9 -3.3
BW10 18 00 50 -30 02 05 0.7 -3.4
BW11 18 00 50 -30 15 05 0.5 -3.5
MM1-A 18 06 52 -26 38 05 4.4 -2.9
MM1-B 18 06 52 -26 51 05 4.2 -3.0
MM3 18 07 56 -29 04 35 2.3 -4.3
GB1 17 54 52 -29 45 30 0.3 -2.2
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- OGLE-LT Variable star designation (VNNN) (1)
6- 10 A5 --- Field OGLE field (See section "Table 1" above)
12- 13 I2 h RAh Right ascension (J2000)
15- 16 I2 min RAm Right ascension (J2000)
18- 22 F5.2 s RAs Right ascension (J2000)
24 A1 --- DE- Declination sign (J2000)
25- 26 I2 deg DEd Declination (J2000)
28- 29 I2 arcmin DEm Declination (J2000)
31- 34 F4.1 arcsec DEs Declination (J2000)
36- 41 F6.3 mag Imag I magnitude
43- 47 F5.3 mag V-I ? V-I colour index
49- 56 A8 --- Rem Remark (2)
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Note (1): OGLE-LT VNNN in Simbad
Note (2): lh: long-term variability and high amplitude (>0.5mag). The star might
belong to Mira variables and one, in the MM1-B field, can be a
R CrB type star.
lt: long-term variability with small amplitude about (0.1-0.2mag).
Some of stars which decrease smoothly their brightness can be
possibly novae returning to quiescence light (for this kind of
stars such a process can take several years).
lv: this type stars exhibit changes in amplitude on shorter time
scales (less than one season) and additionally this variability
can be combined with very long term variations similar to type
"lt". Some stars in this group exhibit also fairly periodic
behavior. These objects were probably missed in the OGLE catalogs
due to period longer or close to 1000 days and are marked
additionally with letter "p".
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Byte-by-byte Description of file: imag.dat vmag.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- OGLE-LT Variable star designation (VNNN) (1)
6- 19 F14.6 --- HJD Heliocentric Julian date
21- 29 F9.6 mag mag Magnitude (I or V)
31- 38 F8.6 mag e_mag rms uncertainty on mag
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Note (1): OGLE-LT VNNN in Simbad
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History: Copid at ftp://sirius.astrouw.edu.pl/ogle/long_term
(End) Patricia Bauer [CDS] 08-Feb-1999