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J/MNRAS/411/1013    CaII triplet in Sextans dSph galaxy      (Battaglia+, 2011)
Study of the Sextans dwarf spheroidal galaxy from the DART Ca II triplet survey.
    Battaglia G., Tolstoy E., Helmi A., Irwin M., Parisi P., Hill V.,
    Jablonka P.
   <Mon. Not. R. Astron. Soc., 411, 1013-1034 (2011)>
   =2011MNRAS.411.1013B
ADC_Keywords: Galaxies, nearby ; Abundances, [Fe/H] ; Equivalent widths ;
          Radial velocities
Keywords: stars: abundances - galaxies: dwarf -
          galaxies: individual: Sextans dSph -
          galaxies: kinematics and dynamics - Local Group - dark matter

Abstract:
    We use Very Large Telescope (VLT)/Fibre Large Array Multi Element
    Spectrograph (FLAMES) intermediate-resolution (R∼6500) spectra of
    individual red giant branch stars in the near-infrared Ca ii triplet
    (CaT) region to investigate the wide-area metallicity properties and
    internal kinematics of the Sextans dwarf spheroidal galaxy (dSph). Our
    final sample consists of 174 probable members of Sextans with accurate
    line-of-sight velocities (±2km/s) and CaT [Fe/H] measurements
    (±0.2dex).

Description:
    The spectroscopic observations were carried out at VLT/FLAMES between
    2003 and 2004, with the exception of one pointing which was
    re-observed in 2008 May, during the commissioning of the upgraded
    Grating Instrument for Radiation Analysis with a Fiber-FedEchelle
    (GIRAFFE) spectrograph CCD.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table3.dat        74      174   Relevant data for the stars in Sextans observed with
                            VLT/FLAMES that passed our membership criteria


See also:
    J/AJ/110/2166 : Variables in Sextans dSph galaxy (Mateo+ 1995)
    J/AJ/126/2840 : BVI CCD photometry of Sextans dSph galaxy (Lee+, 2003)


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

   Bytes Format Units   Label     Explanations

   1-  4  A4    ---     ---       [sext]
       5  A1    ---     ---       [_]
   6-  8  I3    ---     Seq       Sequential number (<[BTH2011] NNN> in Simbad)
  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)
      22  A1    ---     DE-       Declination sign (J2000)
      23  I1    deg     DEd       Declination (J2000)
  25- 26  I2    arcmin  DEm       Declination (J2000)
  28- 31  F4.1  arcsec  DEs       Declination (J2000)
  33- 36  F4.1  ---     S/N       Signal-to-noise ratio
  38- 43  F6.2  km/s    HV        Heliocentric velocity
  45- 48  F4.2  km/s    e_HV      rms uncertainty on HV
  50- 53  F4.2  0.1nm   W(CaT)    Summed CaT equivalent width (EW2 + EW3)
  55- 58  F4.2  0.1nm   e_W(CaT)  rms uncertainty on W(CaT)
  60- 64  F5.2  [Sun]   [Fe/H]    Metallicity (1)
  66- 69  F4.2  [Sun]   e_[Fe/H]  Error on [Fe/H] (lower value)
  71- 74  F4.2  [Sun]   E_[Fe/H]  Error on [Fe/H] (upper value)

Note (1): derived adopting the calibration from Starkenburg et al.
     (2010A&A...513A..34S).


History:
    From electronic version of the journal
(End)                                      Patricia Vannier [CDS]    10-Oct-2011