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The Fueling of Nuclear Activity. I. A NearāInfrared Imaging Survey of Seyfert and Normal Galaxies
- Source :
- The Astrophysical Journal Supplement Series. 110:299-319
- Publication Year :
- 1997
- Publisher :
- American Astronomical Society, 1997.
-
Abstract
- We present near-infrared, modified K-band images of a sample of Seyfert and control galaxies. Our sample includes all known Seyfert galaxies in the Revised Shapely-Ames Catalog and Sandage & Tammann's 1987 extension to the RSA with recessional velocities less than 5000 km s-1 and logarithmic axial ratios less than 0.2 (excluding the two early-type Seyfert galaxies Centaurus A and Perseus A). A control sample of normal galaxies, matched to the Seyfert sample in Hubble type, redshift, inclination, and blue luminosity, has also been observed. To quantify the incidence of bars in both samples, elliptical fits to the isophotes of each galaxy have been performed. In agreement with earlier studies, we find that many galaxies classified as unbarred in the optical, display evidence for bars in the near-infrared.
- Subjects :
- Physics
Luminous infrared galaxy
Radio galaxy
Astrophysics::High Energy Astrophysical Phenomena
Centaurus A
Astronomy
Astronomy and Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
Astrophysics
Disc galaxy
Galaxy
Redshift
Luminosity
Space and Planetary Science
Elliptical galaxy
Astrophysics::Galaxy Astrophysics
Subjects
Details
- ISSN :
- 15384365 and 00670049
- Volume :
- 110
- Database :
- OpenAIRE
- Journal :
- The Astrophysical Journal Supplement Series
- Accession number :
- edsair.doi...........070d75f238579872fb7e1011957dd008