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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
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:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table3.dat        72       34   List of population I Cepheids
table4.dat        79       58   List of the other variable stars


Byte-by-byte Description of file: table3.dat

   Bytes Format Units   Label     Explanations

   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)

Note (1): Pulsation mode
       F: fundamental mode pulsator
      1O: first overtone mode pulsator


Byte-by-byte Description of file: table4.dat

   Bytes Format Units   Label     Explanations

   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

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


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)
Note (G2): Other names:
           SV NN from Sandage (1971ApJ...166...13S), [S71b] VNN in Simbad
           V1894B from paper III (Antonello et al., 2000A&A...363...29A)


Acknowledgements: Luciano Mantegazza 


References:
   Antonello et al., Paper I      1999A&A...349...55A
   Antonello et al., Paper II     1999A&A...350..797A
   Antonello et al., Paper III    2000A&A...363...29A
(End)                                          Patricia Bauer [CDS]  16-Nov-2000