activity
20202025
most citedA Complex Multiphase DLA Associated with a Compact Group at z=2.431 Traces Accretion, Outflows, and Tidal Streams

22 citations · 58 across the 9 of their papers we have counts for

collaborators

9 papers

astro-ph.GA2025★ 4 cited

Kinematics of Circumgalactic O VI Gas and Disk Rotation of Star-forming Galaxies

Stephanie H. Ho, Crystal L. Martin, Hasti Nateghi +2

Quasar sightline observations reveal that low-ionization-state gas corotates with the galaxy disk and often at sub-centrifugal velocities, suggesting that the gas is spiraling towa…

astro-ph.GA2024

Gravitational Lensing Reveals Cool Gas within 10-20 kpc around a Quiescent Galaxy

Tania M. Barone, Glenn G. Kacprzak, James W. Nightingale +12

While quiescent galaxies have comparable amounts of cool gas in their outer circumgalactic medium (CGM) compared to star-forming galaxies, they have significantly less interstellar…

astro-ph.GA2024

Unveiling the Complex Circumgalactic Medium: A Comparative Study of Merging and Non-Interacting Galaxy Groups

Antonia Fernandez-Figueroa, Glenn G. Kacprzak, Nikole M. Nielsen +5

While most galaxies live in group environments where they undergo an accelerated evolution, the characteristics of their circumgalactic medium (CGM) remain uncertain. We present an…

astro-ph.GA2024★ 1 cited

Cloud-by-cloud Multiphase Investigation of the Circumgalactic Medium of Low-redshift Galaxies

Sameer, Jane C. Charlton, Bart P. Wakker +10

The pervasive presence of warm gas in galaxy halos suggests that the circumgalactic medium (CGM) is multiphase in its ionization structure and complex in its kinematics. Some recen…

astro-ph.GA2023★ 1 cited

Signatures of gas flows-II: Connecting the kinematics of the multiphase circumgalactic medium to galaxy rotation

Hasti Nateghi, Glenn G. Kacprzak, Nikole M. Nielsen +4

The multiphase CGM hosts critical processes that affect galaxy evolution such as accretion and outflows. We searched for evidence of these phenomena by using the EW co-rotation fra…

astro-ph.GA2023★ 1 cited

Signatures of gas flows-I: Connecting the kinematics of the HI circumgalactic medium to galaxy rotation

Hasti Nateghi, Glenn G. Kacprzak, Nikole M. Nielsen +5

The CGM hosts many physical processes with different kinematic signatures that affect galaxy evolution. We address the CGM-galaxy kinematic connection by quantifying the fraction o…

astro-ph.GA2022★ 22 cited

A Complex Multiphase DLA Associated with a Compact Group at z=2.431 Traces Accretion, Outflows, and Tidal Streams

Nikole M. Nielsen, Glenn G. Kacprzak, Sameer +4

As part of our program to identify host galaxies of known z=2-3 MgII absorbers with the Keck Cosmic Web Imager (KCWI), we discovered a compact group giving rise to a z=2.431 DLA wi…

astro-ph.GA2020★ 14 cited

Disentangling the multi-phase circumgalactic medium shared between a dwarf and a massive star-forming galaxy at z~0.4

Hasti Nateghi, Glenn G. Kacprzak, Nikole M. Nielsen +4

The multi-phase circumgalactic medium (CGM) arises within the complex environment around a galaxy, or collection of galaxies, and possibly originates from a wide range of physical…

astro-ph.GA2020★ 15 cited

Evidence for galaxy quenching in the green valley caused by a lack of a circumgalactic medium

Glenn G. Kacprzak, Nikole M. Nielsen, Hasti Nateghi +5

The relationship between a galaxy's properties and its circumgalactic medium (CGM) provides a unique view of how galaxies evolve. We present an interesting edge-on (i=86 degrees) d…