2016/01/03 by Sravani Vaddi, Christopher P. O’Dea, Christopher P. ODea +5
Physics and Astronomy · #Astronomy and Astrophysical Research #Brightest cluster galaxy #Elliptical galaxy #Galaxies: Formation, Evolution, Phenomena #Galaxy #Galaxy cluster #Luminous infrared galaxy #Peculiar galaxy #Radio Astronomy Observations and Technology #Radio galaxy #Star formation #astro-ph.GA
paper · pdf · doi:10.3847/0004-637x/818/2/182
Accepted in ApJ
arxiv created 2016/01/03 · openalex publication_date 2016/02/18 · arxiv updated 2016/03/09 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
ABSTRACT We address the relation between star formation and active galactic nucleus (AGN) activity in a sample of 231 nearby (0.0002 < z < 0.0358) early-type galaxies by carrying out a multi-wavelength study using archival observations in the UV, IR, and radio. Our results indicate that early-type galaxies in the current epoch are rarely powerful AGNs, with for a majority of the galaxies. Only massive galaxies are capable of hosting powerful radio sources while less massive galaxies are hosts to lower radio power sources. Evidence of ongoing star formation is seen in approximately 7% of the sample. The star formation rate (SFR) of these galaxies is less than 0.1 M ⊙ yr −1 . They also tend to be radio faint ( ). There is a nearly equal fraction of star-forming galaxies in radio faint ( ) and radio bright galaxies ( ) suggesting that both star formation and radio mode feedback are constrained to be very low in our sample. We notice that our galaxy sample and the Brightest Cluster Galaxies follow similar trends in radio power versus SFR. This may be produced if both radio power and SFR are related to stellar mass.