Astrophysical Journal
Astrophysical Journal
5 years ago

Discovery of Strong Balmer Line Absorption in Two Luminous LoBAL Quasars at z ∼ 1.5

We present the discovery of strong Balmer line absorption in H α to H γ in two luminous low-ionization broad absorption line quasars at ##IMG## [http://ej.iop.org/images/0004-637X/853/2/167/apjaaa7f0ieqn1.gif] {$z\sim 1.5$} , with black hole masses around ##IMG## [http://ej.iop.org/images/0004-637X/853/2/167/apjaaa7f0ieqn2.gif] {${10}^{10}\ {M}_{\odot }$} from near-IR spectroscopy. There are only two previously known quasars at ##IMG## [http://ej.iop.org/images/0004-637X/853/2/167/apjaaa7f0ieqn3.gif] {$z\gt 1.0$} showing Balmer line absorption. SDSS J1019+0225 shows blueshifted absorption by ∼1400 km s −1 with an H α rest-frame equivalent width of 13 Å. In SDSS J0859+4239, we find redshifted absorption by ∼500 km s −1 with an H α rest-frame equivalent width of 7 Å. The redshifted absorption could indicate an inflow of high-density gas onto the black hole, though we cannot...

Publisher URL: http://iopscience.iop.org/0004-637X/853/2/167

DOI: 10.3847/1538-4357/aaa7f0

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