Astronomy and Astrophysics – Astronomy
Scientific paper
May 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996mnras.280..579h&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 280, Issue 2, pp. 579-615.
Astronomy and Astrophysics
Astronomy
12
Galaxies: Active, Galaxies: Photometry, Galaxies: Seyfert, Galaxies: Starburst, Infrared: Galaxies.
Scientific paper
Near-infrared (NIR) photometry of a sample of 31 `warm' IRAS galaxies whose spectral energy distribution peaks in the 60-μm band - Sixty Micron Peakers - is presented. Radial surface brightness profiles reveal that most are dominated by a bulge component in the NIR, indicative of early-type host galaxies. The distribution of the bulge effective radius in the K band is similar to LINERS and starbursts, but very different from optically selected Seyferts. The J, H and K host-galaxy colours, however, are not typical of normal early-type galaxies; they appear to contain significant dust and/or star formation. The sample galaxies classified as starbursts are well fitted by a single r^1/4 profile and do not require a buried active nucleus, while most of the Seyfert galaxies do require an added nuclear point source to fit the light profile. J-K colour profiles and two-colour JHK diagrams reveal that the nuclei are quite red compared to the host galaxies, consistent with the picture of substantial centrally concentrated hot dust. Model-independent parameters, such as concentration index, effective surface brightness and effective radius, are presented for the sample galaxies. No apparent correlations are found with respect to nuclear optical spectroscopic classification. The results of this NIR study support the hypothesis that Sixty Micron Peakers represent galaxies that have recently undergone an interaction which has funnelled gas and dust to the central regions and resulted in a host galaxy with an elliptical-like light profile.
de Robertis Michael M.
Heisler Charlene Anne
Nadeau Daniel
No associations
LandOfFree
Near-infrared surface photometry of `Sixty Micron Peaker' galaxies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Near-infrared surface photometry of `Sixty Micron Peaker' galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Near-infrared surface photometry of `Sixty Micron Peaker' galaxies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1418900