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J/ApJS/125/349      Morphology of 12micron Seyfert Galaxies  (Hunt+, 1999)
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Morphology of the 12 Micron Seyfert Galaxies. II. Optical and
Near-Infrared Image Atlas
       Hunt L. K., Malkan M. A., Rush B., Bicay M. D., Nelson B. O.,
       Stanga R. M., Webb W.
      <Astrophys. J. Suppl. Ser. 125, 349 (1999)>
      =1999ApJS..125..349H      (SIMBAD/NED BibCode)
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ADC_Keywords: Atlases; Galaxies, Seyfert; Photometry, infrared
Keywords: atlases-infrared: galaxies-galaxies: photometry-galaxies:
          Seyfert-galaxies: structure

Abstract:
    We present 263 optical and near-infrared (NIR) images for 42 1s and 48
    Seyfert 2s, selected from the Extended 12{mu}m Galaxy Sample.
    Elliptically averaged profiles are derived from the images, and
    isophotal radii and magnitudes are calculated from these. We also
    report virtual aperture photometry that, judging from comparison with
    previous work, is accurate to roughly 0.05 mag in the optical, and
    0.07 mag in the NIR. Our B-band isophotal magnitude and radii,
    obtained from ellipse fitting, are in good agreement with those of
    Third Reference Catalogue of Bright Galaxies. When compared with the B
    band, V, I, J, and K isophotal diameters show that the colors in the
    outer regions of Seyfert galaxies are consistent with the colors of
    normal spirals. Differences in the integrated isophotal colors and
    comparison with a simple model show that the active nucleus+bulge are
    stronger and redder in the NIR than in the optical. Finally, roughly
    estimated Seyfert disk surface brightnesses are significantly brighter
    in B and K than those in normal spirals of similar morphological type.

File Summary:
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  FileName      Lrecl  Records   Explanations
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ReadMe             80        .   This file
table2.dat        109      263   Morphology Seyferts at 12 microns
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Byte-by-byte Description of file: table2.dat
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   Bytes Format Units       Label     Explanations
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   1-  3  A3    ---         SType     Seyfert type
   5- 17  A13   ---         name      Source name
      19  A1    ---       n_name      Profile extraction note (1)
  21- 29  A9    ---         Oname     Other name
  31- 50  A20   ---         Mtype     Morphological type (from NED & RC3)
  52- 57  F6.4  ---         z         Redshift (from NED)
      60  A1    ---         Filt      Filter
  63- 67  F5.2  mag         Dia10     Aperture photometry 10'' diameter in Filt
  69- 73  F5.2  mag         Dia20     Aperture photometry 20'' diameter in Filt
  75- 79  F5.2  mag         Dia30     Aperture photometry 30'' diameter in Filt
  81- 85  F5.2  mag         IntMag    Integrated isophotal magnitude
      88  A1    ---       n_IntMag    Indicates that the radius used
                                       in calculation is extrapolated, not
                                       interpolated
  90- 94  F5.1  arcsec      Radius    Isophotal radius (2)
      96  A1    ---       n_Radius    Note indicating that the radius used
                                       is extrapolated, not interpolated
  99-102  F4.1  mag/arcsec2 SurfB     Central surface brightness fit by an
                                       exponential to the outer profile
     104  A1    ---       n_SurfB     Note indicating that the radius used
                                        in calculation is extrapolated, not
                                        interpolated
 107-109  A3    ---         Code      Observing run code (3)
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Note (1): Sources for which B and V profiles extracted with
    I- or J-band ellipse parameters.
Note (2):
    B evaluated at 25 mag.arcsec^-2^
    V evaluated at 24 mag.arcsec^-2^
    I evaluated at 23 mag.arcsec^-2^
    J evaluated at 22 mag.arcsec^-2^
    H evaluated at 21.5 mag.arcsec^-2^
    K evaluated at 21 mag.arcsec^-2^
Note (3): See Col.7 of Table 1. An ``X'' signifies images that were not
    acquired in the context of an observing run.  J and K images for
    NGC 2639 were taken at Palomar, and for NGC 3227 at Mt. Hopkins.
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History:
    From ApJ electronic edition

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(End)                            Greg Schwarz (AAS),                 26-Jan-2000