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J/ApJS/194/38         Radial velocities of 11 field RR Lyrae        (For+, 2011)
Radial velocities and pulsation ephemerides of 11 field RR Lyrae stars.
    For B.-Q., Preston G.W., Sneden C.
   <Astrophys. J. Suppl. Ser., 194, 38 (2011)>
   =2011ApJS..194...38F
ADC_Keywords: Stars, variable ; Radial velocities

Keywords: stars: horizontal-branch - stars: Population II -
          stars: variables: RR Lyrae - techniques: radial velocities

Abstract:
    We present new radial velocities (RVs), improved pulsation periods,
    and reference epochs of 11 field RR Lyrae ab-type variables: AS Vir,
    BS Aps, CD Vel, DT Hya, RV Oct, TY Gru, UV Oct, V1645 Sgr, WY Ant,
    XZ Aps, and Z Mic. This study is based on high-resolution spectra
    obtained with the echelle spectrograph of the 2.5m du Pont telescope
    at Las Campanas Observatory. We obtained ∼200 spectra per star (i.e.,
    a total of ∼2300 spectra), distributed more or less uniformly
    throughout their pulsation cycles. RV curves and photometric light
    curves phased to our new ephemerides are presented for all program
    stars.

Description:
    The observations were made with echelle spectrograph of the du Pont
    2.5m telescope at the Las Campanas Observatory (LCO) during 2006-2009.
    The total wavelength coverage is 3500-9000Å.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
stars.dat         65       11   RR Lyrae stars studied
table4.dat        41     2291   Radial velocities


See also:
   III/176 : RR Lyrae Metallicities (Layden 1994)
   J/MNRAS/396/553 : Galactic RR Lyrae data (Dambis, 2009)
   J/AJ/136/1645   : Spectroscopy of bright QUEST RR Lyrae stars (Vivas+, 2008)
   J/A+A/460/459   : Radial velocities of LMC RR Lyrae (Borissova+, 2006)
   J/AJ/132/1714   : Photometric and Spectroscopic study of TY Gru (Preston+,
                     2006)
   J/A+A/423/97    : LMC RR Lyrae radial velocities (Borissova+, 2004)
   J/A+AS/113/483  : Photometric and radial velocity of RRLyr stars (Carrillo+
                     1997)
   J/A+AS/125/321  : RR Lyrae radial velocities and [Fe/H] II. (Solano+ 1997)
   J/AJ/108/1016   : Kinematics of local RR lyrae stars. I. (Layden, 1994)


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

   Bytes Format Units   Label     Explanations

   1-  9  A9    ---     Name      Star name
  11- 12  I2    h       RAh       Right Ascension J2000 (hours)
  14- 15  I2    min     RAm       Right Ascension J2000 (minutes)
  17- 21  F5.2  s       RAs       Right Ascension J2000 (seconds)
      23  A1    ---     DE-       Declination J2000 (sign)
  24- 25  I2    deg     DEd       Declination J2000 (degrees)
  27- 28  I2    arcmin  DEm       Declination J2000 (minutes)
  30- 33  F4.1  arcsec  DEs       Declination J2000 (seconds)
  35- 39  F5.2  mag     Vmax      Maximum light in V from ASAS
      40  A1    ---     n_Vmax    [d] Value of Vmax and Vamp from Preston et al.
                                      (2006AJ....132.1714P)
  42- 45  F4.2  mag     Vamp      Amplitude in V from ASAS
  48- 54  A7    ---     Bl        [Blazhko ] Blazkho effect
  56- 63  F8.6  d       Per       Period (from table5 of paper)
      65  I1    10-6d   e_Per     Error on Period (from table5 of paper)


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

   Bytes Format Units   Label    Explanations

   1-  9  A9    ---     Name     Star name
  11- 23  F13.5 d       HJD      Heliocentric Julian Dates at midpoint
  25- 28  F4.2  ---     Phase    Phase
  30- 36  F7.2  km/s    HRV      Radial velocity
  38- 41  F4.2  km/s    e_HRV    Uncertainty in HRV


History:
    From electronic version of the journal
(End)                 Greg Schwarz [AAS], Emmanuelle Perret [CDS]    01-Aug-2011