Computer Science – Databases
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...201.5205s&link_type=abstract
American Astronomical Society, 201st AAS Meeting, #52.05; Bulletin of the American Astronomical Society, Vol. 34, p.1192
Computer Science
Databases
Scientific paper
We present a comparative analysis of the evolutionary properties of a sample of ≈ 27 Seyfert, 13 Starburst, and 14 non-active galaxies selected from the Extended 12-Micron Galaxy Sample (E12GS). The E12GS was used in an effort to minimize the contribution of any active nucleus to the total flux density emitted by the object, allowing us to choose objects with similar host properties (i.e. morphology, surface brightness) but different activity types. For the objects in our subsample, both radio (21-cm) and infrared (12 and 2μ m) data is available. H I information is derived from L-band observations performed at the Arecibo Observatory, combined with archival data from the HIPASS and LEDA databases, while infrared information is drawn from 2MASS. We have used the λ 21-cm HI spectra of our objects to determine the effects of evolution on the physical properties of galaxies as a function of activity type. The effects of the infrared selection criterion are examined; the non-active subsample is found to be globally similar to previous optically-selected galaxy samples in parameters such as H I mass fraction and central surface brightness. We construct evolutionary diagrams - e.g., total (dynamical) mass vs. H surface brightness, mass-to-light ratio vs. H I mass fraction - for each of our subsamples, and compare evolutionary effects between different activity types and evaluate them against those of the non-active control sample.
Eder Josef
Ghosh Tamal
Hunt Leslie K.
Stevenson Samantha L.
No associations
LandOfFree
H I Evolutionary Studies of IR-Selected AGN 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 H I Evolutionary Studies of IR-Selected AGN, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and H I Evolutionary Studies of IR-Selected AGN will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1890260