Results 31 to 40 of about 1,319 (176)
Discovery of Metastable He I* λ10830 Mini-broad Absorption Lines and Very Narrow Paschen α Emission Lines in the ULIRG Quasar IRAS F11119+3257 [PDF]
Astrophysical Journal, 2019 IRAS F11119+3257 is a quasar-dominated ultraluminous infrared galaxy, with a partially obscured narrow-line Seyfert 1 nucleus. In this paper, we present the near-IR (NIR) spectroscopy of F11119+3257, in which we find unusual Paschen emission lines and ...
Xiang Pan +9 more
semanticscholar +1 more source
, 2012 2 pages, 2 figures, Conference proceedings for "AGN Winds in Charleston," Charleston, SC, Oct 15-18, 2011.
Haggard, Daryl +4 more
openaire +2 more sources
The Optical/Near-Infrared Colors of Broad Absorption Line Quasars, Including the Candidate Radio-loud Broad Absorption Line Quasar 1556+3517 [PDF]
, 1997 A candidate radio-loud broad absorption line (RLBALQ) has been recently reported by Becker et al. We present JHK observations of this object and three other radio-detected BALQs taken with the new Michigan-Dartmouth-MIT/Ohio State/Aladdin Infrared Camera
P. Hall +5 more
semanticscholar +1 more source
The Astrophysical JournalThis study presents a detailed investigation of the broad absorption line (BAL) systems in the quasar SDSS J004613.54+010425.7 (hereafter J0046+0104), which makes characters of the simultaneous existence of line-locking and velocity shift signatures ...
Wei-Jian Lu, Ying-Ru Lin
doaj +1 more source
Astronomische Nachrichten, EarlyView.ABSTRACT The goal of this study is to confirm the feasibility of the use of digitized low dispersive MtWilson Michigan Southern Sky Hα$$ \alpha $$ survey astronomical photographic plates for modern astrophysical research. The detection of highly redshifted objects, such as early galaxies and quasars, is fundamental to understanding the universe's ...
Tauseef Ahmad Zafar +3 more
wiley +1 more source
QSO 2359–1241: A Bright, Highly Polarized, Radio-moderate, Reddened, Low-Ionization Broad Absorption Line Quasar [PDF]
, 2000 We report the discovery of a bright quasar (E = 15.8, z = 0.868) associated with the flat-spectrum radio source NVSS J235953-124148. This quasar, which we designate QSO 2359-1241, possesses a rare combination of extreme properties that make it of special
M. Brotherton +10 more
semanticscholar +1 more source
The Astrophysical JournalWe present an analysis of the coordinated velocity shifts observed in multiple C iv and Si iv broad absorption lines (BALs) in the quasar SDSS J113048.45+225206.6.
Wei-Jian Lu, Ying-Ru Lin
doaj +1 more source
Hidden No More: Spotlight on Tidal Disruption Events in Active Galactic Nuclei
Astronomische Nachrichten, Volume 347, Issue 5, June 2026.ABSTRACT Tidal disruption events (TDEs) are typically discovered in previously quiescent galaxies. However, earlier studies have revealed a handful of TDEs occurring in pre‐existing active galactic nuclei (AGN). We discuss AT2019aalc, a promising TDE candidate in an AGN, and compare it to similar sources.
Patrik Milán Veres
wiley +1 more source
Absorption-Line Study of Halo Gas in NGC 3067 toward the Background Quasar 3C 232 [PDF]
, 2004 We present new H I 21 cm absorption data and ultraviolet spectroscopy from Hubble Space Telescope/Space Telescope Imaging Spectrograph of the QSO/galaxy pair 3C 232/NGC 3067. The QSO sight line lies near the minor axis and 1.′8 (11 h kpc) above the plane
B. Keeney +4 more
semanticscholar +1 more source
Reacceleration of a C iv Broad Absorption Line in Quasar SDSS J083817.00+295526.5
The Astrophysical JournalWe present a rare signature of reacceleration in a C iv broad absorption line (BAL) of the quasar SDSS J083817.00+295526.5. This quasar showcases three distinct BAL systems, labeled as systems A, B, and C.
Ying-Ru Lin, Wei-Jian Lu
doaj +1 more source