The Blueshift Of Civ Broad Emission Line In Qsos. (arXiv:1903.08830v1 [astro-ph.GA])
<a href="http://arxiv.org/find/astro-ph/1/au:+Ge_X/0/1/0/all/0/1">Xue Ge</a> (1), <a href="http://arxiv.org/find/astro-ph/1/au:+Zhao_B/0/1/0/all/0/1">Bi-Xuan Zhao</a> (1), <a href="http://arxiv.org/find/astro-ph/1/au:+Bian_W/0/1/0/all/0/1">Wei-Hao Bian</a> (1), <a href="http://arxiv.org/find/astro-ph/1/au:+Frederick_G/0/1/0/all/0/1">Green Richard Frederick</a> (2) (1.NJNU, 2. UoA)
For the sample from Ge et al. of 87 low-$z$ Palomar–Green (PG) quasi-stellar For the sample from Ge et al. of 87 low-$z$ Palomar–Green (PG) quasi-stellar http://arxiv.org/icons/sfx.gif
objects (QSOs) and 130 high-$z$ QSOs ($0
objects (QSOs) and 130 high-$z$ QSOs ($0<z<5$) with $hb$-based single-epoch
supermassive black hole (SMBH) masses, we performed a uniform decomposition of
the civ $lambda$1549 broad-line profile. Based on the rest frame defined by
the oiii $lambda$5007 narrow emission line, a medium-strong positive
correlation is found between the civ blueshift and the luminosity at 5100AA
or the Eddington ratio leddR. A medium-strong negative relationship is found
between the civ blueshift and civ equivalent width. These results support
the postulation where the radiation pressure may be the driver of civ
blueshift. There is a medium strong correlation between the mass ratio of
civ-based to $hb$-based mbh and the civ blueshift, which indicates that
the bias for civ-based mbh is affected by the civ profile.
