A broad absorption line outflow associated with the broad emission line region in the quasar SDSS J075133.35+134548.3  

作　　者：Bo Liu Hong-Yan Zhou Xin-Wen Shu Shao-Hua Zhang Tuo Ji Xiang Pan Peng Jiang 

机构地区：[1]Key Laboratory for Research in Galaxies and Cosmology,University of Science and Technology of China,Hefei 230026,China [2]Polar Research Institute of China,Shanghai 200136,China [3]Department of Physics,Anhui Normal University,Wuhu 241000,China

出　　处：《Research in Astronomy and Astrophysics》2021年第3期133-148,共16页天文和天体物理学研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(NSFC,11573024,11473025,11421303,11573001and 11822301);the National Basic Research Program of China(the 973 Program 2013CB834905and 2015CB857005);supported by the NSFC(11503022);the Natural Science Foundation of Shanghai(No.15ZR 1444200);supported by the NSFC(11233002);support from the Anhui Provincial NSF(1608085QA06);Young Wanjiang Scholar program;funded by the Strategic Priority Research Program;the Emergence of Cosmological Structures(XDB09000000),National Astronomical Observatories,Chinese Academy of Sciences;the Special Fund for Astronomy from the Ministry of Finance;Funding for SDSS-Ⅲhas been provided by the Alfred P.Sloan Foundation;the Participating Institutions;the National Science Foundation;the U.S.Department of Energy Office of Science。

摘　　要：We report on the discovery of unusual broad absorption lines(BALs)in the bright quasar SDSS J075133.35+134548.3 at z~1,using archival and newly obtained optical and NIR spectroscopic data.The BALs are detected reliably in HeⅠ*λ3889,HeⅠ*λ10830 and tentatively in AlⅢ,MgⅡ.These BALs show complex velocity structures consisting of two major components:a high-velocity component(HV),with a blueshifted velocity range ofΔv_(HV)~9300--3500 km s^(-1),which can be reliably detected in HeⅠ*λ10830,and tentatively in AlⅢand MgⅡ,whereas it is undetectable in HeⅠ*λ3889;and a low-velocity component(LV),withΔv_(LV)~3500--1800 km s^(-1),is only detected in HeⅠ*λ3889 and HeⅠ*λ10830.With the BALs from different ions,the HV outflowing gas can be constrained to have a density of nH~10^(10.3)-10^(11.4) cm^(-3),a column density of NH~10^(21) cm^(-2)and an ionization parameter of U~10^(-1.83)-10^(-1.72);inferring a distance of RHV~0.5 pc from the central continuum source with a monochromatic luminosityλLλ(5100)=7.0×10^(45)erg s^(-1)at 5100 A.This distance is remarkably similar to that of the normal broad line region(BLR)estimated from reverberation experiments,suggesting association of the BLR and the HV BAL outflowing gas.Interestingly,a blueshifted component is also detected in AlⅢand MgⅡbroad emission lines(BELs),and the AlⅢ/MgⅡof such a BEL component can be reproduced by the physical parameters inferred from the HV BAL gas.The LV BAL gas likely has a larger column density,a higher ionization level and hence a smaller distance than the HV BAL gas.Further spectroscopy with a high S/N ratio and broader wavelength coverage is needed to confirm this to shed new light on the possible connection between BALs and BELs.

关 键 词：quasars:emission lines quasars:broad absorption line quasars:individual(SDSS J075133.35+134548.3) 

分 类 号：P158[天文地球—天文学]