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J/AJ/138/184  RR Lyrae variables in 2 fields in M31 spheroid (Sarajedini+, 2009)
RR Lyrae variables in two fields in the spheroid of M31.
    Sarajedini A., Mancone C.L., Lauer T.R., Dressler A., Freedman W.,
    Trager S.C., Grillmair C., Mighell K.J.
   <Astron. J., 138, 184-195 (2009)>
   =2009AJ....138..184S
ADC_Keywords: Galaxies, nearby ; Stars, variable ; Photometry, HST

Keywords: galaxies: individual (M31) - galaxies: spiral -
          galaxies: stellar content - stars: variables: other

Abstract:
    We present Hubble Space Telescope observations taken with the Advanced
    Camera for Surveys Wide Field Channel of two fields near M32 - between
    4 and 6kpc from the center of M31. The data cover a time baseline
    sufficient for the identification and characterization of 681 RR Lyrae
    variables of which 555 are ab-type and 126 are c-type.

Description:
    The observations used in the present study were obtained with the
    HST/ACS in parallel with the imagery conducted by program GO-10572.
    The present images are the parallel observations associated with each
    pointing obtained with the ACS Wide Field Channel (WFC) using the
    F606W (∼V) filter.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table4.dat        63      365   Field 1 Variable Stars (No 1 to 365)
table5.dat        63      387   Field 2 Variable Stars (No 366 to 752)


Byte-by-byte Description of file: table4.dat table5.dat

   Bytes Format Units   Label    Explanations

   1-  3  I3    ---     Seq      Running identification number,
                                  <[SML2009] NNN> in Simbad
       5  I1    h       RAh      Hour of Right Ascension (J2000)
   7-  8  I2    min     RAm      Minute of Right Ascension (J2000)
  10- 14  F5.2  s       RAs      Second of Right Ascension (J2000)
      15  A1    ---     DE-      Sign of Declination (J2000)
  16- 17  I2    deg     DEd      Degree of Declination (J2000)
  19- 20  I2    arcmin  DEm      Arcminute of Declination (J2000)
  22- 25  F4.1  arcsec  DEs      Arcsecond of Declination (J2000)
  27- 31  F5.3  d       Per      Period
  33- 37  F5.3  mag     Vamp     F606W band amplitude
  39- 44  F6.3  mag     F606W    Mean intensity-weighted HST/ACS F606W magnitude
  46- 63  A18   ---     VType    Variable type (Eclipsing, Contact, RRab, RRc,
                                 long period, Anomalous Cepheid?)


History:
    From electronic version of the journal
(End)                  Greg Schwarz [AAS], Patricia Vannier [CDS]    15-Nov-2011