Issue |
Astron. Astrophys. Suppl. Ser.
Volume 140, Number 1, November II 1999
|
|
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Page(s) | 1 - 14 | |
DOI | https://doi.org/10.1051/aas:1999516 | |
Published online | 15 November 1999 |
Near-infrared photometry of isolated spirals with and without an AGN*,**
I. The data
1
Instituto de Astrofísica de Andalucía (CSIC), Apartado 3004, E-18080 Granada, Spain
2
Institut d'Astrophysique de Paris, CNRS, 98bis Bd. Arago, F-75014 Paris, France
3
DAEC, Observatoire de Paris, Université Paris VII, CNRS (UA 173), F-92195 Meudon Cedex, France
4
Departamento de Astronomía, Universidad de Chile, Casilla 36D, Santiago, Chile
5
Instituto de Matemáticas y Física Fundamental (CSIC), Madrid, Spain and Observatorio Astronómico Nacional, Madrid, Spain. Presently on sabbatical leave at Queen Mary & Westfield College, London, UK
6
Observatories of the Carnegie Institution of Washington, 813 Barbara Street, Pasadena, CA 91101, U.S.A.
Send offprint request to: I. Márquez
Received:
5
May
1999
Accepted:
27
August
1999
We present infrared imaging data in the J and bands obtained for 18
active spiral galaxies, together with 11 non active galaxies taken as
a control sample. All of them were chosen to satisfy well defined
isolation criteria so that the observed properties are not related to
gravitational interaction. For each object we give: the image in the
band, the sharp-divided image (obtained by dividing the observed
image by a filtered one), the difference image (obtained by
subtracting a model to the observed one), the color
image, the
ellipticity and position angle profiles, the surface brightness
profiles in J and
, their fits by bulge+disk models and the color
gradient.
We have found that four (one) active (control) galaxies previously
classified as non-barred turn out to have bars when observed in the
near-infrared. One of these four galaxies (UGC 1395) also harbours a
secondary bar. For 15 (9 active, 6 control) out of 24 (14 active, 10
control) of the optically classified barred galaxies (SB or SX) we
find that a secondary bar (or a disk, a lense or an elongated ring) is
present.
The work presented here is part of a large program (DEGAS) aimed
at finding out whether there are differences between active and non active
galaxies in the properties of their central regions that could be
connected with the onset of nuclear activity.
Key words: galaxies: active / galaxies: fundamental parameters / galaxies: photometry / infrared: galaxies
© European Southern Observatory (ESO), 1999