J/ApJS/125/349 Morphology of 12micron Seyfert Galaxies (Hunt+, 1999)
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 1999ApJS..125..349H
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 12µm 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
(End) Greg Schwarz (AAS), 26-Jan-2000