Bradley Peterson
0000-0001-6481-5397
Space Telescope Science Institute
432 papers found
Refreshing results…
Evidence for a low-density component in the broad-line region of Seyfert 1 galaxies
AGN Emission Line Region Variability
Variability of the emission-line spectra and optical continua of Seyfert galaxies. III - Results for a homogeneous sample
On the asymmetry of broad-line H-beta emission in Seyfert 1 galaxies
Observations of the low-redshift broad absorption line QSO PG 1700 + 518 - Limits on the fraction of QSOs with broad absorption lines at low redshift and the physical conditions in the broad absorption line region
The variability of the spectrum of Arakelian 120. II - Evidence for a small broad line emitting region
The effects of stellar-absorption features on the broad-line profiles of Seyfert 1 galaxies
Ngc 4151
Constraints on the Broad-Line Region of Active Galaxies Imposed by Emission-Line Variability
Are forbidden lines present in the optical spectrum of the QSO 3C 273?
Variability of the emission-line spectra and optical continua of Seyfert galaxies. II
MRK 320 - A hot DA white dwarf
Forbidden Line Widths in the Spectra of the Active Galaxies 3C 273 and Mrk 478
The H-beta emission line profile of Arakelian 120
On the Asymetry of the Broad-Line H$β$ Emission in Seyfert 1 Galaxies
The effects of seeing on spectral line measurements in Seyfert 1 galaxies
The variability of the spectrum of Arakelian 120
Spectroscopic Identification of the QSO Candidate Markarian 320
The time variation of broad emission-line profiles of Seyfert 1 galaxies
Variability of the emission-line spectra and optical continua of Seyfert galaxies. I
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