220 citations · 636 across the 14 of their papers we have counts for
14 papers
A Generalist, Automated ALFALFA Baryonic Tully-Fisher Relation
Catie J. Ball, Martha P. Haynes, Michael G. Jones +5
The Baryonic Tully-Fisher Relation (BTFR) has applications in galaxy evolution as a testbed for the galaxy-halo connection and in observational cosmology as a redshift-independent…
The Bimodal Absorption System Imaging Campaign (BASIC) I. A Dual Population of Low-metallicity Absorbers at z
Michelle A. Berg, Nicolas Lehner, J. Christopher Howk +17
The bimodal absorption system imaging campaign (BASIC) aims to characterize the galaxy environments of a sample of 36 HI-selected partial Lyman limit systems (pLLSs) and Lyman limi…
Project AMIGA: The Circumgalactic Medium of Andromeda
Nicolas Lehner, Samantha C. Berek, J. Christopher Howk +22
Project AMIGA (Absorption Maps In the Gas of Andromeda) is a large ultraviolet Hubble Space Telescope program, which has assembled a sample of 43 QSOs that pierce the circumgalacti…
Primarily Undergraduate Institutions and the Astronomy Community
Joseph Ribaudo, Rebecca A. Koopmann, Aileen A. O'Donoghue +1
This White Paper highlights the role Primarily Undergraduate Institutions (PUIs) play within the astronomy profession, addressing issues related to employment, resources and suppor…
Integrating Undergraduate Research and Faculty Development in a Legacy Astronomy Research Project
Rebecca A. Koopmann, Thomas J. Balonek, John M. Cannon +14
The NSF-sponsored Undergraduate ALFALFA Team (UAT) promotes long-term collaborative research opportunities for faculty and students from 23 U.S. public and private primarily underg…
Following the Metals in the Intergalactic and Circumgalactic Medium over Cosmic Time
Nicolas Lehner, Joseph N. Burchett, J. Christopher Howk +5
The circumgalactic medium (CGM) of galaxies serves as a record of the influences of outflows and accretion that drive the evolution of galaxies. Feedback from star formation drives…
Ultraviolet Perspectives on Diffuse Gas in the Largest Cosmic Structures
Joseph N. Burchett, Daisuke Nagai, Iryna Butsky +31
The past decade has seen an explosion of discoveries and new insights into the diffuse gas within galaxies, galaxy clusters, and the filaments composing the Cosmic Web. A new decad…
Understanding the circumgalactic medium is critical for understanding galaxy evolution
Molly S. Peeples, Peter Behroozi, Rongmon Bordoloi +69
Galaxies evolve under the influence of gas flows between their interstellar medium and their surrounding gaseous halos known as the circumgalactic medium (CGM). The CGM is a major…
Project AMIGA: A Minimal Covering Factor for Optically Thick Circumgalactic Gas Around the Andromeda Galaxy
J. Christopher Howk, Christopher B. Wotta, Michelle A. Berg +19
We present a deep search for HI 21-cm emission from the gaseous halo of Messier 31 as part of Project AMIGA, a large program Hubble Space Telescope program to study the circumgalac…
The HI Content of the Universe over the Past 10 Gyrs
Marcel Neeleman, J. Xavier Prochaska, Joseph Ribaudo +4
We use the Hubble Space Telescope (HST) archive of ultraviolet (UV) quasar spectroscopy to conduct the first blind survey for damped Ly-alpha absorbers (DLAs) at low redshift (z <…
The Bimodal Metallicity Distribution of the Cool Circumgalactic Medium at z<1
N. Lehner, J. C. Howk, T. M. Tripp +7
We assess the metal content of the cool (10^4 K) circumgalactic medium (CGM) about galaxies at z<1 using an H I-selected sample of 28 Lyman limit systems (LLS, defined here as abso…
A Hubble Space Telescope Study of Lyman Limit Systems: Census and Evolution
Joseph Ribaudo, Nicolas Lehner, J. Christopher Howk
We present a survey for optically thick Lyman limit absorbers at z<2.6 using archival Hubble Space Telescope observations with the Faint Object Spectrograph and Space Telescope Ima…
Evidence for Cold Accretion: Primitive Gas Flowing onto a Galaxy at z~0.274
Joseph Ribaudo, Nicolas Lehner, J. Christopher Howk +5
We present UV and optical observations from the Cosmic Origins Spectrograph on the Hubble Space Telescope and Keck of a z= 0.27395 Lyman limit system (LLS) seen in absorption again…
Strong z~0.5 O VI Absorption Toward PKS 0405-123: Implications for Ionization and Metallicity of the Cosmic Web
J. Christopher Howk, Joseph S. Ribaudo, Nicolas Lehner +2
We present observations of the O VI system at z_abs = 0.495096 toward PKS 0405-123 (z_em = 0.5726) obtained with FUSE and STIS. In addition to strong O VI, with log N(O VI) = 14.47…