166 citations · 855 across the 21 of their papers we have counts for
21 papers
The PARADIGM project II: The lifetimes and quenching of satellites in Milky Way-mass haloes
Gandhali D. Joshi, Andrew Pontzen, Oscar Agertz +2
The abundance and star-formation histories of satellites of Milky Way (MW)-like galaxies are linked to their hosts' assembly histories. To explore this connection, we use the PARAD…
Jellyfish galaxies with the IllustrisTNG simulations -- Supermassive black hole activity in dense environments with ram-pressure stripped satellites
Shalini Kurinchi-Vendhan, Eric Rohr, Annalisa Pillepich +3
Jellyfish galaxies are extreme examples of how galaxies can transform due to dense environmental effects. These satellite galaxies suffer from ram-pressure stripping, leading to th…
The PARADIGM project I: How early merger histories shape the present-day sizes of Milky-Way-mass galaxies
Gandhali D. Joshi, Andrew Pontzen, Oscar Agertz +3
How mergers affect galaxy formation depends on both feedback processes, and on the geometry and strength of the mergers themselves. We introduce the PARADIGM project, where we stud…
VINTERGATAN-GM: How do mergers affect the satellite populations of MW-like galaxies?
Gandhali D. Joshi, Andrew Pontzen, Oscar Agertz +3
We investigate the impact of a galaxy's merger history on its system of satellites using the new \textsc{vintergatan-gm} suite of zoom-in hydrodynamical simulations of Milky Way-ma…
Jellyfish galaxies with the IllustrisTNG simulations -- Citizen-science results towards large distances, low-mass hosts, and high redshifts
Elad Zinger, Gandhali Joshi, Annalisa Pillepich +2
We present the ``Cosmological Jellyfish'' project - a citizen-science classification program to identify jellyfish galaxies within the IllustrisTNG cosmological simulations. Jellyf…
Jellyfish galaxies with the IllustrisTNG simulations -- No enhanced population-wide star formation according to TNG50
Junia Göller, Gandhali Joshi, Eric Rohr +2
Due to ram-pressure stripping, jellyfish galaxies are thought to lose large amounts, if not all, of their interstellar medium. Nevertheless, some, but not all, observations suggest…
Jellyfish galaxies with the IllustrisTNG simulations -- When, where, and for how long does ram pressure stripping of cold gas occur?
Eric Rohr, Annalisa Pillepich, Dylan Nelson +3
Jellyfish galaxies are prototypical examples of satellite galaxies undergoing strong ram pressure stripping (RPS). We analyze the evolution of 512 unique, first-infalling jellyfish…
VINTERGATAN-GM: The cosmological imprints of early mergers on Milky-Way-mass galaxies
Martin P. Rey, Oscar Agertz, Tjitske K. Starkenburg +6
We present a new suite of cosmological zoom-in hydrodynamical ( spatial resolution) simulations of Milky-Way mass galaxies to study how a varying mass rat…
Satellites of Milky Way- and M31-like galaxies with TNG50: quenched fractions, gas content, and star formation histories
Christoph Engler, Annalisa Pillepich, Gandhali D. Joshi +3
We analyse the quenched fractions, gas content, and star formation histories of ~1200 satellite galaxies with around 198 Milky Way- (MW) and…
The merger and assembly histories of Milky Way- and M31-like galaxies with TNG50: disk survival through mergers
Diego Sotillo-Ramos, Annalisa Pillepich, Martina Donnari +6
We analyze the merger and assembly histories of Milky Way (MW) and Andromeda (M31)-like galaxies to quantify how, and how often, disk galaxies of this mass can survive recent major…
The cumulative star-formation histories of dwarf galaxies with TNG50. I: Environment-driven diversity and connection to quenching
Gandhali D. Joshi, Annalisa Pillepich, Dylan Nelson +5
We present the cumulative star-formation histories (SFHs) of >15000 dwarf galaxies () from the TNG50 run of the IllustrisTNG suite across a vast range of…
Quenched fractions in the IllustrisTNG simulations: the roles of AGN feedback, environment, and pre-processing
Martina Donnari, Annalisa Pillepich, Gandhali D. Joshi +8
We use the IllustrisTNG simulations to show how the fractions of quenched galaxies vary across different environments and cosmic time, and to quantify the role AGN feedback and pre…
The fate of disk galaxies in IllustrisTNG clusters
Gandhali D. Joshi, Annalisa Pillepich, Dylan Nelson +5
We study the stellar morphological evolution of disc galaxies within clusters in the TNG50 and TNG100 runs from the IllustrisTNG simulation suite. We select satellites of masses $1…
The distinct stellar-to-halo mass relations of satellite and central galaxies: insights from the IllustrisTNG simulations
Christoph Engler, Annalisa Pillepich, Gandhali D. Joshi +9
We study the stellar-to-halo mass relation (SHMR) for central and satellite galaxies with total dynamical masses above 10^10.5 Msun using the suite of cosmological magneto-hydrodyn…
Quenching low-mass satellite galaxies: evidence for a threshold ICM density
Ian D Roberts, Laura C Parker, Toby Brown +3
We compile a sample of SDSS galaxy clusters with high-quality Chandra X-ray data to directly study the influence of the dense intra-cluster medium (ICM) on the quenching of satelli…
Jellyfish galaxies with the IllustrisTNG simulations: I. Gas-stripping phenomena in the full cosmological context
Kiyun Yun, Annalisa Pillepich, Elad Zinger +8
We use IllustrisTNG, a suite of gravity and MHD simulations, to study the demographics and properties of jellyfish galaxies in the full cosmological context. By jellyfish galaxies,…
The trajectories of galaxies in groups: mass loss and preprocessing
Gandhali D. Joshi, Laura C. Parker, James Wadsley +1
We present a study of environmental effects and preprocessing in a large galaxy group using a high-resolution, zoom-in simulation run with the GASOLINE2 hydrodynamics code. We cate…
Wide-Field Optical Spectroscopy of Abell 133: A Search for Filaments Reported in X-ray Observations
Thomas Connor, Daniel D. Kelson, John Mulchaey +7
Filaments of the cosmic web have long been associated with the threadlike structures seen in galaxy redshift surveys. However, despite their baryon content being dominated by hot g…
Preprocessing, mass loss and mass segregation of galaxies in DM simulations
Gandhali D. Joshi, James Wadsley, Laura C. Parker
We investigate the mass loss of galaxies in groups and clusters with high-resolution DM simulations. We detect weak mass segregation in the inner regions of group/cluster haloes, c…
Uncovering Mass Segregation with Galaxy Analogues in Dark Matter Simulations
Gandhali D. Joshi, Laura C. Parker, James Wadsley
We investigate mass segregation in group and cluster environments by identifying galaxy analogues in high-resolution dark matter simulations. Subhalos identified by the AHF and ROC…
Mass segregation trends in SDSS galaxy groups
Ian D. Roberts, Laura C. Parker, Gandhali D. Joshi +1
It has been shown that galaxy properties depend strongly on their host environment. In order to understand the relevant physical processes driving galaxy evolution it is important…