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J/MNRAS/355/1251  Bar-induced strengths in spiral galaxies (Laurikainen+, 2004)
Bar-induced perturbation strengths of the galaxies in the
Ohio State University Bright Galaxy Survey - I.
    Laurikainen E., Salo H., Buta R., Vasylyev S.
   <Mon. Not. R. Astron. Soc., 355, 1251-1271 (2004)>
   =2004MNRAS.355.1251L
ADC_Keywords: Galaxies, nearby ; Morphology

Keywords: galaxies: spiral - galaxies: statistics


Abstract:
    Bar-induced perturbation strengths are calculated for a well-defined
    magnitude-limited sample of 180 spiral galaxies, based on the Ohio
    State University Bright Galaxy Survey. We use a gravitational torque
    method, the ratio of the maximal tangential force to the mean
    axisymmetric radial force, as a quantitative measure of the bar
    strength.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table2.dat        57      180   Structural parameters from 2D decompositions


See also:
    J/ApJS/143/73 : OSUBGS, Morphology of spiral galaxies (Eskridge+, 2002)
           II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)


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

   Bytes Format Units     Label     Explanations

       1  A1    ---       Sample    [O2] 2=2MASS, O=OSUBGS (J/ApJS/143/73)
                                    (Ohio State University Bright Galaxy Survey)
   4- 12  A9    ---       Galaxy    Galaxy name
  13- 15  A3    ---       n_Galaxy  Note on Galaxy (1)
  17- 22  F6.3  arcsec    Reff      ? Effective radius of the bulge
      23  A1    ---       u_Reff    Uncertainty flag on Reff
  26- 30  F5.3  ---       beta      ? beta index of the bulge
      31  A1    ---       u_beta    Uncertainty flag on beta
  33- 37  F5.1  arcsec    hr        Exponential scale-length of the disc
      38  A1    ---       u_hr      Uncertainty flag on hr
  39- 40  A2    ---       n_hr      [B MH] Band used for the decomposition , if
                                            not H-band
  42- 46  F5.3  ---       B/D       ? Bulge-to-disk ratio
      47  A1    ---       u_B/D     Uncertainty flag on B/D
      48  A1    ---       n_B/D     [B] Band used for the decomposition, if not
                                         H-band
  50- 57  A8    ---       Bar/oval  Indicates whether a bar/oval was fitted in
                                     the decomposition

Note (1): Notes on galaxies as follows:
      a = Manual decomposition fit
      b = H-band image not deep enough to determine hr well, but the
          bulge model is reasonable
      c = Bulge model is taken from the fit to the inner regions, and the
          disc parameters from the fit to the outer regions of the galaxy.
      d = No bar is fitted, although the galaxy is barred in RC3.
      e = The number of iterations is limited in the decomposition.
      f = The H-band image field is too small
      g = Prominent outer ring dominates the disc


History:
    From electronic version of the journal
(End)                                      Patricia Vannier [CDS]    21-Jun-2005