Journal
ASTROPHYSICAL JOURNAL
Volume 812, Issue 1, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/0004-637X/812/1/66
Keywords
galaxies: active; galaxies: evolution; infrared: galaxies; quasars: emission lines; quasars: supermassive black holes
Categories
Funding
- Creative Initiative Program of the National Research Foundation of Korea (NRF)
- NRF-Fostering Core Leaders of Future Program - Korean government [2015-000714]
- National Research Foundation of Korea to the Center for Galaxy Evolution Research [2010-0027910]
- Korea government (MSIP) [2008-0060544]
- University of Hawaii [NNX-08AE38A]
- National Research Foundation of Korea [2010-0027910, 2008-0060544] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ask authors/readers for more resources
Red quasars are thought to be an intermediate population between merger-driven star-forming galaxies in dust-enshrouded phase and normal quasars. If so, they are expected to have high accretion ratios, but their intrinsic dust extinction hampers reliable determination of Eddington ratios. Here, we compare the accretion rates of 16 red quasars at z similar to 0.7 to those of normal type 1 quasars at the same redshift range. The red quasars are selected by their red colors in optical through near-infrared (NIR) and radio detection. The accretion rates of the red quasars are derived from the P beta line in NIR spectra, which is obtained by the SpeX on the Infrared Telescope Facility in order to avoid the effects of dust extinction. We find that the measured Eddington ratios (L-bol/L-Edd similar or equal to 0.69) of red quasars are significantly higher than those of normal type 1 quasars, which is consistent with a scenario in which red quasars are the intermediate population and the black holes of red quasars grow very rapidly during such a stage.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available