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J/A+AS/125/313      RR Lyrae radial velocities and [Fe/H] I. (Fernley+ 1997)
Radial velocities and iron abundances of field RR Lyraes. I.
       Fernley J., Barnes T.G.
      <Astron. Astrophys. Suppl. Ser. 125, 313 (1997)>
      =1997A&AS..125..313F      (SIMBAD/NED BibCode)
ADC_Keywords: Stars, variable ; Abundances, [Fe/H] ; Radial velocities

Keywords: stars: abundances ; V363 Cas ; AT And -
          stars: binaries: spectroscopic - stars: variables - stars: kinematics

Abstract:
    We present systemic velocities and iron abundances for 56 RR Lyraes,
    the majority of which have been observed by the HIPPARCOS satellite.
    Comparison between our systemic velocities and previous values
    identifies several binary candidates only one of which, TU UMa, was
    previously suspected of being a binary. However, spectra of the
    unusual RR Lyrae BB Vir show no evidence of line doubling and hence do
    not support the recent claims that this star may have a Blue
    Horizontal Branch companion. Comparison between our abundances and
    previous determinations shows reasonable agreement except with the
    recent work of Layden (1994, Cat. J/AJ/108/1016) where we find
    systematic differences. Several of the stars included on the HIPPARCOS
    observing list as RR Lyraes are shown to be mis-classified. Of
    particular interest are the stars V363 Cas and AT And which, by
    analogy with XZ Cet, may be anomalous Cepheids.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
appen.dat        142       56   Radial velocities and metal abundances of RR Lyr
appen.tex        118      188   LaTeX version of appen


See also:
   J/A+AS/125/321 : RR Lyrae radial velocities and [Fe/H] II. (Solano+ 1997)


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

   Bytes Format Units   Label     Explanations

   1-  8  A8    ---     Name      Star name
  10- 11  I2    h       RAh       Right Ascension J2000 (hours) (5)
  13- 14  I2    min     RAm       Right Ascension J2000 (minutes) (5)
  16- 17  I2    s       RAs       Right Ascension J2000 (seconds) (5)
      19  A1    ---     DE-       Declination J2000 (sign) (5)
  20- 21  I2    deg     DEd       Declination J2000 (degrees) (5)
  23- 26  F4.1  arcmin  DEm       Declination J2000 (minutes) (5)
  28- 35  F8.6  d       Per       ? Pulsation period
      36  A1    ---     Note      [c*&] Note on star (1)
  38- 42  F5.2  Sun     [Fe/H]    ? Abundance calculated in this work
  44- 48  F5.2  Sun     [Fe/H]1   ? Abundance taken from the literature (2)
      50  I1    ---    r_[Fe/H]1  ? [1/9] Reference for [Fe/H]1 (3)
  52- 56  F5.2  Sun     [Fe/H]2   ? Abundance taken from the literature (2)
      58  I1    ---    r_[Fe/H]2  ? [1/9] Reference for [Fe/H]2 (3)
  60- 64  F5.2  Sun     [Fe/H]3   ? Abundance taken from the literature (2)
      66  I1    ---    r_[Fe/H]3  ? [1/9] Reference for [Fe/H]3 (3)
  68- 72  F5.2  Sun     [Fe/H]4   ? Abundance taken from the literature (2)
  74- 75  I2    ---    r_[Fe/H]4  ? [1/10] Reference for [Fe/H]4 (3)
  77- 81  F5.2  Sun     [Fe/H]5   ? Abundance taken from the literature (2)
  83- 84  I2    ---    r_[Fe/H]5  ? [1/10] Reference for [Fe/H]5 (3)
  86- 90  F5.2  Sun     [Fe/H]6   ? Abundance taken from the literature (2)
      92  I1    ---    r_[Fe/H]6  ? [1/9] Reference for [Fe/H]6 (3)
  94- 97  I4    km/s    Vsys      Systemic velocity calculated in this work
  99-100  I2    km/s    e_Vsys    rms uncertainty on Vsys
 102-105  I4    km/s    Vsys1     ? Systemic velocity taken from the literature
 107-108  I2    km/s    e_Vsys1   ? rms uncertainty on Vsys1
 110-111  I2    ---     r_Vsys1   ? [1/21] Reference for Vsys1 (4)
 113-116  I4    km/s    Vsys2     ? Systemic velocity taken from the literature
 118-119  I2    km/s    e_Vsys2   ? rms uncertainty on Vsys2
 121-122  I2    ---     r_Vsys2   ? [1/21] Reference for Vsys2 (4)
 124-127  I4    km/s    Vsys3     ? Systemic velocity taken from the literature
 129-130  I2    km/s    e_Vsys3   ? rms uncertainty on Vsys3
 132-133  I2    ---     r_Vsys3   ? [1/21] Reference for Vsys3 (4)
 135-136  I2    km/s    Vsys4     ? Systemic velocity taken from the literature
     138  I1    km/s    e_Vsys4   ? rms uncertainty on Vsys4
 140-141  I2    ---     r_Vsys4   ? [1/21] Reference for Vsys1 (4)

Note (1): *: See Section 5 for a discussion of this star for which the
              classification as an RR Lyrae is uncertain
          &: only one observation of this star was made; hence the larger
             errors. Based on the large amplitude shown in the GCVS it
             is assumed to be an 'ab' type
          c: c-type, blank indicates ab-type
Note (2): {DELTA}S values from previous work have been transformed to [Fe/H]
           using [Fe/H] = -0.13-0.195{DELTA}S (Fernley & Barnes 1996).
           As discussed in the text, the uncertainty in the [Fe/H] values,
           both from previous work and this work, is typically ±0.13 dex.
Note (3): Sources of abundances:
            1: Butler (1975ApJ...200...68B)
            2: Kemper (1982AJ.....87.1395K)
            3: Preston (1959ApJ...130..507P)
            4: Clementini et al. (1991AJ....101.2168C)
            5: Kinman & Caretta (1992PASP..104..111K)
            6: Smith (1990PASP..102..124S)
            7: Suntzeff et al. (1991ApJ...367..528S)
            8: Layden (1994AJ....108.1016L), Cat. J/AJ/108/1016
            9: Lambert et al. (1996ApJS..103..183L)
           10: Clementini et al. (1995AJ....110.2319C), Cat. J/AJ/110/2319
Note (4): Sources of mean radial velocities:
          1: Liu & Janes (1990ApJ...354..273L)
          2: Jones et al. (1988ApJ...332..206J)
          3: Hawley & Barnes (1985PASP...97..551H)
          4: Woolley & Ali (1966RGOB..114....1W)
          5: Farquhar (1948ApJ...107..276F)
          6: Rogers (1960Obs....80..220R)
          7: Varsavsky (1960ApJ...131..623V)
          8: Cacciari et al. (1987A&AS...69..135C)
          9: Burki & Meylan (1986A&A...156..131B)
         10: Barnes et al. (1988ApJS...67..403B)
         11: Layden (1994AJ....108.1016L), Cat J/AJ/108/1016
         12: Imbert (1980A&A....86..259I)
         13: Preston et al. (1961ApJ...133..484P)
         14: Saha & White (1990PASP..102..148S)
         15: Payne-Gaposhkin (1954AnHar.113....3P)
         16: Woolley and Savage (1971RGOB..170....1W)
         17: Joy (1938PASP...50..302J)
         18: Joy (1950PASP...62...60J)
         19: Joy (1955PASP...67..420J)
         20: Preston (1959ApJ...130..507P)
         21: Notni 1956, mitt. Jena No. 26
Note (5): Position added to the original table (taken from SIMBAD)



Acknowledgements: Enrique Solano  

(End)                                         Patricia Bauer [CDS]   18-Feb-1997