J/A+A/367/759 Variable stars in IC 1613 (Mantegazza+, 2001)
Variable stars in nearby galaxies. IV. Fields C and D of IC 1613.
Mantegazza L., Antonello E., Fugazza D., Bossi M., Covino S.
<Astron. Astrophys. 367, 759 (2001)>
=2001A&A...367..759M 2001A&A...367..759M
ADC_Keywords: Photometry, CCD ; Stars, variable ; Novae ; Galaxies, nearby
Keywords: Stars: oscillations - Cepheids - novae - variables: general -
galaxies: individual: IC 1613 - galaxies: stellar content
Abstract:
The nearby galaxies IC 1613 and NGC 6822 were observed over four years
to detect short period Cepheids and to obtain good light curves for
Fourier decomposition. The program was carried out with a relatively
small telescope, the Dutch 0.9m at ESO-La Silla, and the
observations were performed without filter (white light), or Wh-band.
In this paper we present the results of the observations of Fields C
and D in IC 1613 (3.8'x3.8' each). The analysis of the light curves
of 3297 stars in the two fields has allowed the detection of 92
variable stars. A total of 34 Population I Cepheids have been found,
while only 7 of these objects were previously known in these fields.
Most of the stars have short periods and some of them are first
overtone mode pulsators. Among the other variable stars there are one
eclipsing binary and five W Vir candidates. A nova event was observed
in Field D.
Description:
File table3 contains the list of Pop. I Cepheids detected in Fields C
and D of IC 1613.
File table4 contains the list of all the other variable stars detected
in the same two fields.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 72 34 List of population I Cepheids
table4.dat 79 58 List of the other variable stars
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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2- 7 A6 --- Name Name of the star
11- 12 I2 h RAh Right Ascension (J2000)
14- 15 I2 min RAm Right Ascension (J2000)
17- 21 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)
37- 42 F6.3 d P Period
46- 50 F5.2 mag <Wh> Mean white band magnitude (G1)
54- 57 F4.2 mag Ampl White band amplitude
61- 63 A3 --- Mode Pulsation mode (1)
65- 70 A6 --- Name2 Other name (G2)
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Note (1): Pulsation mode
F: fundamental mode pulsator
1O: first overtone mode pulsator
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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- 6 A6 --- Name Name of the star
10- 11 I2 h RAh Right Ascension (J2000)
13- 14 I2 min RAm Right Ascension (J2000)
16- 20 F5.2 s RAs Right Ascension (J2000)
23 A1 --- DE- Declination sign (J2000)
24- 25 I2 deg DEd Declination (J2000)
27- 28 I2 arcmin DEm Declination (J2000)
30- 33 F4.1 arcsec DEs Declination (J2000)
37- 41 F5.2 mag <Wh> Mean white band magnitude (G1)
43 A1 --- l_Per Limit flag on Per
44- 51 F8.3 d Per ? Period
52 A1 --- u_Per [?] Uncertainty flag on Per
54 A1 --- l_Ampl Limit flag on Ampl
55- 58 F4.2 mag Ampl White band amplitude
61- 64 F4.2 mag V-I ? V-I (or V-R if n_V-I=*) colour index
65 A1 --- n_V-I [*] *: V-R colour index in V-I column
68- 73 A6 --- Type Type of variability (1)
74- 79 A6 --- Name2 Other name
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Note (1): Type of variability:
RP: red periodic
BV: blue variable
LP: long period
E: eclipsing binary
Irr: irregular
W Vir: pop. II Cepheid
Nova: nova
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Global notes:
Note (G1): The white band photometric system is a system without filter and it
has been defined in paper I of this series
(Antonello et al., 1999A&A...349...55A 1999A&A...349...55A)
Note (G2): Other names:
SV NN from Sandage (1971ApJ...166...13S 1971ApJ...166...13S), [S71b] VNN in Simbad
V1894B from paper III (Antonello et al., 2000A&A...363...29A 2000A&A...363...29A)
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Acknowledgements: Luciano Mantegazza
References:
Antonello et al., Paper I 1999A&A...349...55A 1999A&A...349...55A
Antonello et al., Paper II 1999A&A...350..797A 1999A&A...350..797A
Antonello et al., Paper III 2000A&A...363...29A 2000A&A...363...29A
(End) Patricia Bauer [CDS] 16-Nov-2000