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J/other/IBVS/5767       GEOS RR Lyr survey                    (Le Borgne+, 2007)
The GEOS RR Lyr survey.
    Le Borgne J.F., Klotz A., Boer M.
   <IAU Inform. Bull. Var. Stars, 5767, 1-7 (2007)>
   =2007IBVS.5767....1L
ADC_Keywords: Stars, variable ; Photometry


Abstract:
    We present here the sixth list of light maxima of RR Lyrae stars from
    the GEOS RR Lyr Survey, a GEOS program (http://www.upv.es/geos/)
    (Boninsegna et al., 2002ASPC..259..166B) of automated observations of
    RR Lyr stars started in January 2004.

Description:
    The present list contains 587 maxima observed with no filter between
    July and December 2006 (Table 1). The maxima are determined by fitting
    a polynomial function on the data points. The uncertainties on
    individual maxima are estimated from the data sampling of each
    maximum. The nominal sampling (two consecutive 30-s exposures taken
    every 10 minutes on a time baseline of 2 hours centered around the
    predicted maximum time) may be altered by local events (weather or
    telescope operation). This results uncertainties from 0.002 to 0.010
    day. For a well observed star, the mean uncertainty on maxima is about
    0.003-day (4.3-minutes). The O-C's are computed with the GCVS elements
    (Kholopov et al., 1985, See Cat. II/250).

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
stars.dat         35      126   Stars list and positions (from Simbad)
table1.dat        45      587   Maxima of RR Lyrae stars


See also:
    II/250 :  Combined General Catalogue of Variable Stars (Samus+ 2004)


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

   Bytes Format Units   Label     Explanations

   1- 10  A10   ---     Name      Variable name
  13- 14  I2    h       RAh       Simbad Right ascension (J2000)
  16- 17  I2    min     RAm       Simbad Right ascension (J2000)
  19- 23  F5.2  s       RAs       Simbad Right ascension (J2000)
      25  A1    ---     DE-       Declination sign (J2000)
  26- 27  I2    deg     DEd       Declination (J2000)
  29- 30  I2    arcmin  DEm       Declination (J2000)
  32- 35  F4.1  arcsec  DEs       ? Declination (J2000)


Byte-by-byte Description of file: table1.dat

   Bytes Format Units   Label     Explanations

   1- 10  A10   ---     Name      Variable name
      11  A1    ---     r_Name    Reference when no elements are available in
                                    the GCVS (1)
  13- 23  F11.3 d       HJDmax    Maximum light date
  25- 29  F5.3  d       e_HJDmax  rms uncertainty on HJDmax
  31- 36  F6.3  d       O-C       ? Observed minus computed value
  38- 42  I5    ---     E         ? Cycle number
  44- 45  A2    ---     Obs       Observation site ( C= Calern, LS = La Silla)

Note (1): References as follows:
      1 = Meinunger, 1984MitVS..10...56M
      2 = Baldwin and Samolyk, 2003, AAVSO RR Lyrae Monographs, 1, (2)
      3 = Williams, 1993JAVSO..22..116W


History:
    From electronic version of the journal
(End)                                      Patricia Vannier [CDS]    15-Nov-2007