2007/04/24 by Cai-Na Hao, C. N. Hao, Xiaoyang Xia +6
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysical Phenomena and Observations #Galaxies: Formation, Evolution, Phenomena #astro-ph
paper · pdf · doi:10.1088/1009-9271/8/1/02
published as Chin.J.Astron.Astrophys.8:12-24,2008 · 19 pages,3 figures,submitted to Chin. J. Astron. Astrophys. This paper was first prepared for publication on August 10th, 2005
arxiv created 2007/04/24 · openalex publication_date 2008/02/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
We study the growth of black holes and stellar population in spheroids at high redshift using several (sub)mm-loud QSO samples. Applying the same criteria established in an earlier work, we find that, similar to IR QSOs at low redshift, the far-infrared emission of these (sub)mm-loud QSOs mainly originates from dust heated by starbursts. By combining low- z IR QSOs and high- z (sub)mm-loud QSOs, we find a trend that the star formation rate ( ∗ ) increases with the accretion rate ( acc ). We compare the values of ∗ / acc for submm emitting galaxies (SMGs), far-infrared ultraluminous/hyperluminous QSOs and typical QSOs, and construct a likely evolution scenario for these objects. The (sub)mm-loud QSO transition phase has both high acc and ∗ and hence is important for establishing the correlation between the masses of black holes and spheroids.