The Growth of Black Holes and Their Host Spheroids in (Sub)mm-loud QSOs at High Redshift
| Autor: | Hao, C. N., Xia, X. Y., Mao, S., Deng, Z. G., Wu, Hong |
|---|---|
| Rok vydání: | 2007 |
| Předmět: | |
| Zdroj: | Chin.J.Astron.Astrophys.8:12-24,2008 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1088/1009-9271/8/1/02 |
| Popis: | 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 ($\Mstardot$) increases with the accretion rate ($\Mdot$). We compare the values of $\Mstardot/\Mdot$ 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 $\Mdot$ and $\Mstardot$ and hence is important for establishing the correlation between the masses of black holes and spheroids. Comment: 19 pages,3 figures,submitted to Chin. J. Astron. Astrophys. This paper was first prepared for publication on August 10th, 2005 |
| Databáze: | arXiv |
| Externí odkaz: |
|