activity
20002020
most citedMg II Absorption Systems in SDSS QSO Spectra

201 citations · 1.9k across the 32 of their papers we have counts for

collaborators

32 papers

astro-ph.GA2020★ 6 cited

Absorption-line Environments of High-redshift BOSS Quasars

Chen Chen, Fred Hamann, Bo Ma +4

The early stage of massive galaxy evolution often involves outflows driven by a starburst or a central quasar plus cold mode accretion (infall), which adds to the mass build-up in…

astro-ph.GA2015★ 115 cited

A Deep Hubble and Keck Search for Definitive Identification of Lyman Continuum Emitters at z~3.1

Brian Siana, Alice E. Shapley, Kristin R. Kulas +13

Narrow-band imaging of the rest-frame Lyman continuum (LyC) of galaxies at z~3.1 has produced a large number of candidate LyC-emitting galaxies. These samples are contaminated by g…

astro-ph.GA2014★ 180 cited

The Ly-alpha Properties of Faint Galaxies at z2-3 with Systemic Redshifts and Velocity Dispersions from Keck-MOSFIRE

Dawn K. Erb, Charles C. Steidel, Ryan F. Trainor +13

We study the Lya profiles of 36 spectroscopically-detected Lya-emitters (LAEs) at z2-3, using Keck MOSFIRE to measure systemic redshifts and velocity dispersions from rest-frame op…

astro-ph.CO2013★ 29 cited

Discovery of the Transition of a Mini-Broad Absorption Line into Broad Absorption in the SDSS Quasar J115122.14+020426.3

Paola Rodríguez Hidalgo, Michael Eracleous, Jane Charlton +3

We present the detection of a rare case of dramatic strengthening in the UV absorption profiles in the spectrum of the quasar J115122.14+020426.3 between observations ~2.86 years a…

astro-ph.CO2013★ 85 cited

Narrowband Lyman-Continuum Imaging of Galaxies at z ~ 2.85

Robin E. Mostardi, Alice E. Shapley, Daniel B. Nestor +3

We present results from a survey for z~2.85 Lyman-Continuum (LyC) emission in the HS1549+1933 field and place constraints on the amount of ionizing radiation escaping from star-for…

astro-ph.CO2012★ 165 cited

A Refined Estimate of the Ionizing Emissivity from Galaxies at z~3: Spectroscopic Follow-up in the SSA22a Field

Daniel B. Nestor, Alice E. Shapley, Katherine A. Kornei +2

We investigate the contribution of star-forming galaxies to the ionizing background at z~3, building on previous work based on narrowband (NB3640) imaging in the SSA22a field. We u…