Access to Astronomical Catalogues

J/MNRAS/401/2113   GHASP: Hα data cubes for 153 galaxies   (Epinat+, 2010)
Evidence for strong dynamical evolution in disc galaxies through the last 11Gyr.
GHASP VIII. A local reference sample of rotating disc galaxies for high-redshift
studies.
    Epinat B., Amram P., Balkowski C., Marcelin M.
   <Mon. Not. R. Astron. Soc., 401, 2113-2147 (2010)>
   =2010MNRAS.401.2113E
ADC_Keywords: Galaxy catalogs; Radial velocities; Morphology

Keywords: galaxies: evolution - galaxies: formation - galaxies: high-redshift -
          galaxies: irregular - galaxies: kinematics and dynamics -
          galaxies: spiral

Abstract:
    Due to their large distances, high-redshift galaxies are observed at 
    a very low spatial resolution. In order to disentangle the evolution
    of galaxy kinematics from low-resolution effects, we have used
    Fabry-Perot 3D Hα data cubes of 153 nearby isolated galaxies
    selected from the Gassendi Hα survey of SPirals (GHASP) to
    simulate data cubes of galaxies at redshift z=1.7 using a pixel size
    of 0.125" and a 0.5" seeing. We have derived Hα flux, velocity
    and velocity dispersion maps.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
tableb1.dat       67      153   Galaxy parameters at z=0
tableb2.dat       72      153   Exponential disk model on the sample projected
                              at z=1.7
tableb3.dat       72      153   Isothermal sphere model on the sample projected
                              at z=1.7
tableb4.dat       72      153   Flat model on the sample projected at z=1.7
tableb5.dat       72      153   Arctangent model on the sample projected at z=1.7
tableb6.dat       39      153   Parameters computed without beam smearing
                              correction for the sample projected at z= 1.7


See also:
           VII/237 : HYPERLEDA. I. Catalog of galaxies (Paturel+, 2003)
   J/MNRAS/388/500 : GHASP: Hα data cubes for 108 galaxies (Epinat+, 2008)
   J/MNRAS/390/466 : GHASP: Hα data cubes for 97 galaxies (Epinat+, 2008)


Byte-by-byte Description of file: tableb1.dat

   Bytes Format Units     Label   Explanations

   1- 10  A10   ---       Galaxy  Galaxy name (UGC NNNNNA)
  12- 13  I2    deg       i       Inclination at z=0 from Epinat et al.
                                   (2008, Cat. J/MNRAS/390/466)
  15- 16  I2    deg       e_i     rms uncertainty on i
  18- 21  I4    deg       PA      [-180/300] Position angle of the major axis at
                                  z=0 from Epinat et al. 2008 (J/MNRAS/390/466)
  23- 24  I2    deg       e_PA    rms uncertainty on PA
  26- 29  F4.1  kpc       D25/2   Optical radius from RC3 (VII/155) catalog
      30  A1    ---      r_D25/2  [*] * if D25/2 from HyperLeda database,
                                       Paturel et al., 2003, Cat. VII/237
  32- 36  F5.1  mag       BMAG    ?=- Absolute B-band magnitude from the
                                      HyperLeda database (Cat. VII/237)
  38- 40  I3    km/s      Vmaxc   Maximum velocity from Epinat et al.
                                   (2008, Cat. J/MNRAS/390/466)
  42- 44  I3    km/s     e_Vmaxc  rms uncertainty on Vmaxc
  46- 47  I2    km/s      sigma   Mean local velocity dispersion
  49- 50  I2    km/s     e_sigma  rms uncertainty on sigma
  52- 55  F4.1  ---       Vm/sig  ?=- Vmax to sigma ratio
  57- 60  F4.1  ---     e_Vm/sig  ?=- rms uncertainty on Vmaxc/sigma
  62- 64  I3    km/s/kpc  Sin     ?=- Inner slope of the rotation curve (1)
  66- 67  I2    km/s/kpc  e_Sin   ?=- rms uncertainty on Sin

Note (1): No value is provided when no high resolution rotation curve is
     computed (edge on galaxies, Epinat et al. 2008, Cat. J/MNRAS/390/466,
     2009A&A...504..789E).


Byte-by-byte Description of file: tableb[2345].dat

   Bytes Format Units     Label    Explanations

   1- 10  A10   ---       Galaxy   Galaxy name (UGC NNNNNA) (1)
  12- 13  I2    deg       i        ? Inclination at z=1.7 deduced from the fit
  15- 16  I2    deg       e_i      ? Statistical error on i (lower limit)
      17  A1    ---       n_i      [*] * indicates that inclination was stacked
                                       to one boundary
  19- 22  I4    deg       PA       [-180/300]? Position angle of the major axis
                                               at z=1.7 (2)
  24- 25  I2    deg       e_PA     ? Statistical error on PA (lower limit)
  27- 30  F4.1  kpc       rt       ? Scale length radius of the model
                                     (defined in Appendix A) (2)
  32- 35  F4.1  kpc       e_rt     ? Statistical error on rt (lower limit)
      36  A1    ---       n_rt     [i] i for infinity
  38- 40  I3    km/s      Vt       ? Velocity of the model
                                     (defined in Appendix A) (2)
  42- 44  I3    km/s      e_Vt     ? Statistical error on Vt (lower limit)
      45  A1    ---       n_Vt     [i] i for infinity
  47- 49  I3    km/s      Vmaxc    ? Maximum velocity of the model within Rlast
                                     (in tableb6.dat) (3)
  51- 52  I2    km/s      sigma    ? Local velocity dispersion
                                     (beam smearing corrected)
  54- 55  I2    km/s      e_sigma  ? rms uncertainty on sigma
      57  A1    ---       l_sigma  [>] Limit flag on sigma
  58- 62  F5.1  ---       Vm/sig   ? Vmax to sigma ratio
  64- 66  I3    km/s      DVm      ? Mean difference of the model rotation curve
                                     with the actual rotation curve at z=0
  68- 71  I4    km/s/kpc  Sin      ? Inner slope of the rotation curve from
                                     the model
      72  A1    ---       n_Sin    [*] * indicates that only the slope is
                                         constrained by the model

Note (1): Galaxies for which no parameter is provided are those for which
     the fit was not possible.
Note (2): deduced from the fit with the inclination fixed to the value in
     tableb1.dat.
Note (3): rms uncertainty on Vmaxc is the same as e_Vt and thus not take
     into account the uncertainty on the inclination.


Byte-by-byte Description of file: tableb6.dat

   Bytes Format Units   Label     Explanations

   1- 10  A10   ---     Galaxy    Galaxy name (UGC NNNNNA)
  12- 14  F3.1  ---     B         Beam smearing parameter: B=(D25/2)/(s),
                                   s being the seeing
  16- 18  I3    km/s    Vmaxc     ? Maximum velocity measured on the along the
                                    major axis at z=1.7
  20- 22  I3    km/s    sig0      Central velocity dispersion from the
                                    uncorrected velocity dispersion map
  24- 25  I2    km/s    sig0min   Mean velocity dispersion from the 20% smallest
                                    values
  27- 30  F4.1  ---     Vm/sig    ? Vmax to sigma ratio
  32- 34  I3    km/s    DVm       ? Mean difference of the rotation curve
                                    measured along the major axis at z=1.7 with
                                    the actual rotation curve at z=0
  36- 39  F4.1  kpc     Rlast     Radius of the last point
                                   (maps were cut at D25/2)


Acknowledgements:
    Benoit Epinat, benoit.epinat(at)ast.obs-mip.fr

References:
    Garrido et al., Paper I          2002A&A...387..821G
    Garrido et al., Paper II         2003A&A...399...51G
    Garrido et al., Paper III        2004MNRAS.349..225G
    Garrido et al., Paper IV         2005MNRAS.362..127G
    Spano et al.,   Paper V          2008MNRAS.383..297S
    Epinat et al.,  Paper VI         2008MNRAS.388..500E, Cat. J/MNRAS/388/50
    Epinat et al.,  Paper VII        2008MNRAS.390..466E, Cat. J/MNRAS/390/466
(End)                                      Patricia Vannier [CDS]    07-Jun-2010