ADC/CDS Standard Document for Catalog:
/journal_tables/A+AS/131/105/

1. Use the ADC Data Viewer Suite to visualize the data.
2. Get the data files via anonymous FTP. (See Note.)

J/A+AS/131/105      NGC 6221 ionized gas kinematics (Vega Beltran+ 1998)
================================================================================
Mixed early and late-type properties in the bar of NGC 6221:
evidence for evolution along the Hubble sequence?
     Vega Beltran J.C., Zeilinger W.W., Amico P., Schultheis M., 
     Corsini E.M., Funes J.G., Beckman J., Bertola F.
    <Astron. Astrophys. Suppl. Ser. 131, 105 (1998)>
    =1998A&AS..131..105V      (SIMBAD/NED BibCode)
================================================================================
ADC_Keywords: Galaxies, Seyfert ; Velocity dispersion
Keywords: galaxies: individual: NGC 6221 - galaxies: kinematics and dynamics -
          galaxies: structure - galaxies: evolution - galaxies: spiral

Abstract:
    Rotation curves and velocity dispersion profiles are presented for
    both the stellar and gaseous components along five different position
    angles (PA =5{deg}, 50{deg}, 95{deg}, 125{deg}, and 155{deg}) of the
    nearby barred spiral NGC 6221. The observed kinematics extends out to
    about 80'' from the nucleus. Narrow and broad-band imaging is also
    presented. The radial profiles of the fluxes ratio [NII] ({lambda}
    6583.4{AA})/H{alpha} reveal the presence of a ring-like structure of
    ionized gas, with a radius of about 9'' and a deprojected circular
    velocity of about 280km/s. The analysis of the dynamics of the bar
    indicates this ring is related to the presence of an inner Lindblad
    resonance (ILR) at 1.3kpc. NGC 6221 is found to exhibit intermediate
    properties between those of the early-type barred galaxies: the
    presence of a gaseous ring at an ILR, the bar edge located between the
    ILR's and the corotation radius beyond the steep rising portion of the
    rotation curve, the dust-lane pattern, and those of the late-type
    galaxies: an almost exponential surface brightness profile, the
    presence of H{alpha} regions along all the bar, the spiral-arm
    pattern. It is consistent with scenarios of bar-induced evolution from
    later to earlier-type galaxies.

Objects:
    ----------------------------------------------------------
       RA   (2000)   DE       Designation(s)
    ----------------------------------------------------------
    16 52 47      -59 13.0    NGC 6221
    ----------------------------------------------------------

File Summary:
--------------------------------------------------------------------------------
 FileName   Lrecl  Records  Explanations
--------------------------------------------------------------------------------
ReadMe         80        .  This file
table3.dat     68       51  Stellar kinematics for PA: 5, 50, 95, 125 & 155{deg}
table4.dat     71       55  Ionized gas kinematics for PA=5   (Major Axis)
table5.dat     71      108  Ionized gas kinematics for PA=50
table6.dat     71      122  Ionized gas kinematics for PA=95  (Minor Axis)
table7.dat     71       81  Ionized gas kinematics for PA=125 (Bar Major Axis)
table8.dat     71       78  Ionized gas kinematics for PA=155
--------------------------------------------------------------------------------

Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
   Bytes Format  Units   Label     Explanations
--------------------------------------------------------------------------------
   1-  3  I3     deg     PA       Position angle
   6- 10  F5.1   arcsec  Rad      [-90/90] Radius
  15- 18  I4     km/s    Vel      Velocity
  22- 23  I2     km/s  e_Vel      Velocity error
  27- 29  I3     km/s    sigmaVel Velocity dispersion
  32- 33  I2     km/s  e_sigmaVel Velocity dispersion error
  38- 43  F6.3   ---     h3       h_3_ Gauss-Hermite coefficient
  46- 50  F5.3   ---   e_h3       h_3_ Gauss-Hermite coefficient error
  55- 60  F6.3   ---     h4       h_4_ Gauss-Hermite coefficient
  63- 67  F5.3   ---   e_h4       h_4_ Gauss-Hermite coefficient error
--------------------------------------------------------------------------------

Byte-by-byte Description of file: table4.dat, table5.dat, table6.dat
Byte-by-byte Description of file: table7.dat, table8.dat
--------------------------------------------------------------------------------
  Bytes Format  Units   Label      Explanations
--------------------------------------------------------------------------------
  1-  5  F5.1   arcsec  Rad        [-90/90] Radius
  9- 12  I4     km/s    HVHa       H{alpha} observed heliocentric velocity
 16- 17  I2     km/s  e_HVHa       H{alpha} observed heliocentric velocity error
 21- 23  I3     km/s    sigmaHVHa  H{alpha} velocity dispersion
 28- 31  I4     km/s    HVNII      Observed [NII] heliocentric velocity
 35- 36  I2     km/s  e_HVNII      Observed [NII] heliocentric velocity error
 40- 42  I3     km/s    sigmaHVNII velocity dispersion of [NII]
 46- 49  F4.2   ---     [NII]/Ha   Flux ratio [NII]/H{alpha}
 53- 56  I4     km/s    HV         Averaged ionized gas heliocentric velocity
 60- 61  I2     km/s  e_HV         Averaged ionized gas velocity error
 65- 67  I3     km/s    sigmaHV    Averaged velocity dispersion
 70- 71  I2     km/s  e_sigmaHV    Averaged velocity dispersion error
--------------------------------------------------------------------------------

Acknowledgements: Juan Carlos Vega <jvega@astrpd.pd.astro.it>
================================================================================
(End)                                         Patricia Bauer [CDS]   24-Feb-1998