Spectroscopy of Broad Absorption Line Quasars at 3 ≲ Z ≲ 5. I. Evidence for Quasar Winds Shaping Broad/Narrow Emission Line Regions
نویسندگان
چکیده
منابع مشابه
Stratified Quasar Winds: Integrating X-ray and Infrared Views of Broad Absorption Line Quasars
Quasars are notable for the luminous power they emit across decades in frequency from the far-infrared through hard X-rays; emission at different frequencies emerges from physical scales ranging from AUs to parsecs. Each wavelength regime thus offers a different line of sight into the central engine and a separate probe of outflowing material. Therefore, obtaining a complete accounting of the p...
متن کاملA Balmer-line Broad Absorption Line Quasar
I report the discovery of blueshifted broad absorption line (BAL) troughs in at least six transitions of the Balmer series of hydrogen (Hβ to H9) and in Ca II, Mg II and excited Fe II in the quasar SDSS J125942.80+121312.6. This is only the fourth active galactic nucleus known to exhibit Balmer absorption, all four in conjunction with low-ionization BAL systems containing excited Fe II. The sub...
متن کاملThe Mass of Quasar Broad Emission Line Regions
We show that the mass of ionized gas in the broad-line regions (BLRs) of luminous quasars is at least several hundred M , and probably of the order of 10 3–104 M . BLR mass estimates in several existing textbooks suggest lower values but pertain to much less luminous Seyfert galaxies or include only a small fraction of the ionized/emitting volume of the BLR. The previous estimates also fail to ...
متن کاملThe X-ray emission from broad absorption line quasars
Pointed ASCA observations as well as archival ROSAT data are used for a study of the X-ray emission of the three BAL Quasars LBQS 2212-1759, PG 1411+442, and PG 0043+039. All three objects are found to be X-ray quiet, possibly due to substantial intrinsic absorption with NH > 1023 cm−2 but might have intrinsically a more typical spectral energy distribution. This picture is supported by explici...
متن کاملUltraviolet Quasar Absorption Line Spectroscopy of z ∼ 1 Galaxy Group
We used ultraviolet spectra from HST/STIS (R = 30, 000), together with optical spectra from Keck/HIRES (R = 45, 000), to study the three MgII-selected absorption systems at z = 0.9254, 0.9276, and 0.9342 toward the quasar PG 1206 + 459. A multi-phase gaseous structure, with low-ionization components produced in small condensations and high-ionization ones in diffuse clouds, is indicated in all ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2020
ISSN: 1538-4357
DOI: 10.3847/1538-4357/ab7eb8