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J/ApJ/691/1387      Spectroscopy of the Galactic bar. I.       (Rangwala+, 2009)
Fabry-Perot absorption line spectroscopy of the Galactic bar.
I. Kinematics.
    Rangwala N., Williams T.B., Stanek K.Z.
   <Astrophys. J., 691, 1387-1399 (2009)>
   =2009ApJ...691.1387R    (SIMBAD/NED BibCode)
ADC_Keywords: Equivalent widths ; Radial velocities ; Stars, giant ;
              Stars, dwarfs ; Spectroscopy ; Milky Way ; Photometry, VRI
Keywords: Galaxy: bulge - Galaxy: kinematics and dynamics - stars: kinematics -
          techniques: radial velocities - techniques: spectroscopic

Abstract:
    We use Fabry-Perot absorption line imaging spectroscopy to measure
    radial velocities using the CaII line in 3360 stars toward three lines
    of sight in the Milky Way's bar: Baade's Window and offset position at
    (l,b)~(±5.0,-3.5°). This sample includes 2488 bar red clump
    giants, 339 bar M/K-giants, and 318 disk main-sequence stars. We
    measure the first four moments of the stellar velocity distribution of
    the red clump giants, and find it to be symmetric and flat-topped. We
    also measure the line-of-sight average velocity and dispersion of the
    red clump giants as a function of distance in the bar.

Description:
    Observations were made between 1996 and 1999 using the Rutgers
    Fabry-Perot (RFP) system at the f/13.5 Cassegrain focus of the Cerro
    Tololo Inter-American Observatory (CTIO) 1.5m telescope. The FOV of
    the RFP was circular with a diameter of 4'.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table2.dat        84     3360   Radial velocities and equivalent widths


See also:
   J/MNRAS/348/1439 : OGLE II Galactic center proper motions (Sumi+, 2004)
   J/MNRAS/349/1059 : OGLE variables in Galactic bar (Wray+, 2004)
   J/A+A/423/517    : Velocities of Galactic disk late-type stars (Rocha-Pinto+,
                      2004)
   J/A+A/425/489    : Late-type stars in the inner Milky Way (Comeron+, 2004)
   J/AJ/110/1699    : F-P observations of globular clusters (Gebhardt+ 1995)
   J/AJ/113/1026    : Fabry-Perot Observations of M15 (Gebhardt+ 1997)


Byte-by-byte Description of file: table2.dat

   Bytes Format Units    Label     Explanations

   1-  9  A9    ---     [RWS2009]  Object identification
  11- 16  I6    ---      OGLE      ? OGLE identification number (1)
  18- 19  I2    h        RAh       Hour of Right Ascension (J2000)
  21- 22  I2    min      RAm       Minute of Right Ascension (J2000)
  24- 28  F5.2  s        RAs       Second of Right Ascension (J2000)
      30  A1    ---      DE-       Sign of the Declination (J2000)
  31- 32  I2    deg      DEd       Degree of Declination (J2000)
  34- 35  I2    arcmin   DEm       Arcminute of Declination (J2000)
  37- 40  F4.1  arcsec   DEs       Arcsecond of Declination (J2000)
  42- 48  F7.2  km/s     HRV       Heliocentric radial velocity
  50- 54  F5.2  km/s     e_HRV     Error in HRV
  56- 59  F4.2  0.1nm    EW        Equivalent width in Angstroms
  61- 64  F4.2  0.1nm    e_EW      Error in EW
  66- 71  F6.3  mag      Imag      The I band magnitude
  73- 77  F5.3  mag      V-I       ? The (V-I) color index
  79- 84  A6    ---      Ref       Source of photometry (2)

Note (1): Names are <OGLE BUL-SCNN NNNNNNN> in Simbad. See Sumi et al., 2004,
          Cat. J/MNRAS/348/1439. OGLE field number (SC) are:
    BWCa      = 45
    MM5B[acd] = 26
    MM7B[ac]  = 17
Note (2): References as follows:
    o = OGLE (Szymanski, M.K. 2005AcA....55...43S; see Cat. J/MNRAS/348/1439;
        precision 1%-2%);
    s = SAAO (1m telescope at the South African Astronomical Observatory;
        precision 5%-10%);
    f = Fabry-Perot (FP measurement of the continuum level of the CaII
        absorption line to estimate I-band magnitude; precision ≲10%).


History:
    From electronic version of the journal

References:
    Rangwala & Williams. Paper II. 2009ApJ...702..414R
(End)                 Greg Schwarz [AAS], Emmanuelle Perret [CDS]    23-Feb-2011