220 citations
- University of Notre DameUS4 papers
- Space Telescope Science InstituteUS3 papers
- University of California, Santa CruzUS3 papers
- Providence CollegeUS2 papers
- Saint Michael's CollegeUS2 papers
- Union CollegeUS2 papers
- University of San FranciscoUS2 papers
- California Baptist UniversityUS1 paper
- Colgate UniversityUS1 paper
- Cornell UniversityUS1 paper
- George Mason UniversityUS1 paper
- Goddard Space Flight CenterUS1 paper
8 papers
Determining the Co-Rotation Radii of Spiral Galaxies Using Spiral Arm Pitch Angle Measurements at Multiple Wavelengths
Shameer Abdeen, Daniel Kennefick, Julia Kennefick +4
The spiral arms spanning disk galaxies are believed to be created by density waves that propagate through galactic disks. We present a novel method of finding the co-rotation radiu…
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…
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 <…