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J/MNRAS/246/54      Late-type giants in Baade's window    (Sharples+ 1990)
Kinematics of the late M-giants in Baade's window
     Sharples R., Walker A., Cropper M.
    <Mon. Not. R. Astron. Soc. 246, 54 (1990)>
    =1990MNRAS.246...54S
ADC_Keywords: Stars, late-type ; Radial velocities ; Photometry, infrared


Description:
    Radial velocities have been measured for an unbiased sample of 239
    late-type M giants in the b=-4° galactic bulge window (Baade's
    window). The radial velocities were acquired at the AAT Observatory.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat        83      239   Positions, velocities and line strengths
                                 for Baade's window M stars
table1.tex       131      341   LaTeX version of the table


Byte-by-byte Description of file: table1.dat

   Bytes Format  Units   Label    Explanations

   2-  4  I3     ---     BMB      Designation in Blanco, McCarthy and
                                    Blanco (1984AJ.....89..636B)
       5  A1     ---     u_BMB    Uncertainty flag (:) on the BMB
                                    designation
   7- 10  F4.1   mag     Imag     magnitude from BMB
  12- 14  F3.1   ---     SpClass  spectral class from BMB
  16- 17  I2     h       RAh      Right Ascension 1950 (hours)
  19- 20  I2     min     RAm      Right Ascension 1950 (minutes)
  22- 26  F5.2   s       RAs      Right Ascension 1950 (seconds)
      28  A1     ---     DE-      Declination 1950 (sign)
  29- 30  I2     deg     DEd      Declination 1950 (degrees)
  32- 33  I2     arcmin  DEm      Declination 1950 (minutes)
  35- 38  F4.1   arcsec  DEs      Declination 1950 (seconds)
  40- 45  F6.1   km/s    VrB      ? Heliocentric velocity
                                      measured from the blue spectra
  47- 50  F4.1   km/s    e_VrB    ? error on VrB
  52- 57  F6.1   km/s    VrR      ? Heliocentric velocity
                                      measured from the red spectra
  58- 61  F4.1   km/s    e_VrR    ? error on VrR
  63- 67  F5.3   mag     TiO     *? TiO line strength
  69- 72  F4.2   0.1nm   CaII    *? CaII line strength (866.2nm)
  74- 77  F4.2   mag     J-K      ? (reddening corrected) J-K colour
  79- 83  F5.2   mag     Mbol    *? bolometric absolute magnitude

Note on TiO: the TiO line strength is defined as    2.5log(F1/F2),
     where F1 is the integrated flux over the rest-wavelength range
     837-842nm and F2 is evaluated over the range 844-849nm.
Note on CaII: method described by Armandroff & Zinn (1988AJ.....96...92A)

Note on Mbol: assuming Ro = 7.8 kpc from Frogel & Whitford (1987ApJ...320..199F)



Table 2: Mean velocities and velocity dispersions.
--------------------------------------------------
Partition       No. Stars <V>     sigma  (+,-)
--------------------------------------------------
  all stars       239     2.9     111.4   6,5
  I< 11.8          14   -21.7      71.3  20,11
  I> 11.8         225     4 4     113.3   6,5
  I: 11.8-12.8     95    -0.5     125.1  10,8
  I: 12.8-13.4    110    15.5     107.7   8,7

      all groups below include only stars with I> 11.8

  BMB sp. class 6     87    3.4   115.8   10,8
  BMB sp. class 6.5   72   12.6   112.8   11,9
  BMB sp. class 7     44  -12.2   107.1   14,10
  BMB sp. class 8-9   17   39.4   117.8   28,17
  TiO< 0.4            81    7.7   120.3   11,9
  TiO> 0.4           105    3.8   111.7    9,7
  CaII< 1.8           92    8.9   108.8    9,7
  CaII> 1.8           94    2.2   121.6   10,8
  J-K< 1.2            32   -4.3   129.8   20,14
  J-K> 1.2            20    4.6   120.1   26,16
  Mbol: -1 to-3       22    4.7   121.5   24,15
  Mbol: -3 to-5       30   -5.0   129.5   21,14

Table 3: Recent velocity dispersion measurements for
          inner bulge populations
------------------------------------------------------------
  Group             Dispersion Error  No. stars  References
------------------------------------------------------------
  M5-M9 stars          113        6        225       1
  K stars              120       11         62       2
  Miras                122       15         34       3
  Planetary Nebulae     99       19         15       4
  RR Lyraes            133       25         17       5

References:
   1. This paper.
   2. Rich & Whitford (1984PASP...96..794S).
   3. Feast & Spencer Jones (1987).
   4. Kinman, Feast & Lasker (1988AJ.....95..804K).
   5. Gratton (1987MNRAS.224..175G).

References:
    Armandroff, T.E. & Zinn, R., 1988AJ.....96...92A
    Blanco, V.M., McCarthy, M.F. & Blanco, V.M., 1984AJ.....89..636B
    Feast M.W. & Spencer Jones J., 1987, Preprint
    Frogel, J.A. & Whitford, A.E., 1987ApJ...320..199F
    Gratton R.G., 1987MNRAS.224..175G
    Kinman T.D., Feast M.W. & Lasker B.M., 1988AJ.....95..804K
    Rich R.M. & Whitford A.E., 1984PASP...96..794S

Courtesy: Ray Sharples 

(End)                                    Francois Ochsenbein [CDS]   26-Jan-1994