80 citations · 872 across the 30 of their papers we have counts for
30 papers
VERTICO VII: Environmental quenching caused by suppression of molecular gas content and star formation efficiency in Virgo Cluster galaxies
Toby Brown, Ian D. Roberts, Mallory Thorp +20
We study how environment regulates the star formation cycle of 33 Virgo Cluster satellite galaxies on 720 parsec scales. We present the first resolved star-forming main sequence fo…
ViCTORIA project: The LOFAR HBA Virgo Cluster Survey
H. W. Edler, F. de Gasperin, T. W. Shimwell +15
The Virgo cluster is the nearest massive galaxy cluster and thus a prime target to study astrophysical processes in dense large-scale environments. In the radio band, we can probe…
Radio continuum tails in ram pressure-stripped spiral galaxies: experimenting with a semi-empirical model in Abell 2255
A. Ignesti, B. Vulcani, A. Botteon +7
Wide-field radio continuum observations of galaxy clusters are revealing an increasing number of spiral galaxies hosting tens of kpc-long radio tails produced by the nonthermal int…
VERTICO VI: Cold-gas asymmetries in Virgo cluster galaxies
Ian D. Roberts, Toby Brown, Nikki Zabel +20
We analyze cold-gas distributions in Virgo cluster galaxies using resolved CO(2-1) (tracing molecular hydrogen, H2) and HI observations from the Virgo Environment Traced In CO (VER…
Ram-pressure stripped radio tail and two ULXs in the spiral galaxy HCG 97b
Dan Hu, Michal Zajaček, Norbert Werner +11
We report LOFAR and VLA detections of extended radio emission in the spiral galaxy HCG 97b, hosted by an X-ray bright galaxy group. The extended radio emission detected at 144 MHz,…
VERTICO V: The environmentally driven evolution of the inner cold gas discs of Virgo cluster galaxies
Adam B. Watts, Luca Cortese, Barbara Catinella +18
The quenching of cluster satellite galaxies is inextricably linked to the suppression of their cold interstellar medium (ISM) by environmental mechanisms. While the removal of neut…
VERTICO IV: Environmental Effects on the Gas Distribution and Star Formation Efficiency of Virgo Cluster Spirals
Vicente Villanueva, Alberto D. Bolatto, Stuart Vogel +18
We measure the molecular-to-atomic gas ratio, , and the star formation rate (SFR) per unit molecular gas mass, SFE, in 38 nearby galaxies selected from the…
LoTSS Jellyfish Galaxies IV: Enhanced Star Formation on the Leading Half of Cluster Galaxies and Gas Compression in IC3949
Ian D. Roberts, Maojin Lang, Daria Trotsenko +7
With MaNGA integral field spectroscopy, we present a resolved analysis of star formation for 29 jellyfish galaxies in nearby clusters, identified from radio continuum imaging taken…
Walk on the Low Side: LOFAR explores the low-frequency radio emission of GASP jellyfish galaxies
Alessandro Ignesti, Benedetta Vulcani, Bianca M. Poggianti +13
Jellyfish galaxies, characterized by long filaments of stripped interstellar medium extending from their disks, are the prime laboratories to study the outcomes of ram pressure str…
High-resolution, High-sensitivity, Low-frequency uGMRT View of Coma Cluster of Galaxies
D. V. Lal, N. Lyskova, C. Zhang +12
We present high-resolution, high-sensitivity upgraded Giant Metrewave Radio Telescope observations of the Coma cluster (A1656) at 250-500 MHz and 550-850 MHz. At 250-500 MHz, 135 s…
A New Method to Constrain the Appearance and Disappearance of Observed Jellyfish Galaxy Tails
Rory Smith, Jong-Ho Shinn, Stephanie Tonnesen +11
We present a new approach to observationally constrain where the tails of Jellyfish (JF) galaxies in groups and clusters first appear and how long they remain visible with respect…
VERTICO II: effects of HI-identified environmental mechanisms on molecular gas
Nikki Zabel, Toby Brown, Christine D. Wilson +17
In this VERTICO early science paper we explore in detail how environmental mechanisms, identified in HI, affect the resolved properties of molecular gas reservoirs in cluster galax…
LoTSS Jellyfish Galaxies III. The first identification of jellyfish galaxies in the Perseus cluster
Ian D. Roberts, Reinout J. van Weeren, Roland Timmerman +4
In this paper we report the first identification of jellyfish galaxies in the Perseus cluster (Abell 426). We identified four jellyfish galaxies (LEDA 2191078, MCG +07-07-070, UGC…
VERTICO: The Virgo Environment Traced In CO Survey
Toby Brown, Christine D. Wilson, Nikki Zabel +33
We present the Virgo Environment Traced in CO (VERTICO) survey, a new effort to map CO(), CO(), and CO() in 51 Virgo Cluster galaxies with the A…
GASP XXXVIII: The LOFAR-MeerKAT-VLA view on the non-thermal side of a jellyfish galaxy
Alessandro Ignesti, Benedetta Vulcani, Bianca M. Poggianti +18
Ram pressure stripping is a crucial evolutionary driver for cluster galaxies. It is thought to be able to accelerate the evolution of their star formation, trigger the activity of…
Ram Pressure Candidates in UNIONS
Ian D. Roberts, Laura C. Parker, Stephen Gwyn +17
We present a search for disturbed, candidate ram pressure stripping galaxies across more than 50 spectroscopically selected SDSS groups and clusters. Forty-eight ram pressure candi…
LoTSS jellyfish galaxies: II. Ram pressure stripping in groups versus clusters
I. D. Roberts, R. J. van Weeren, S. L. McGee +3
Numerous examples of ram pressure stripping in galaxy clusters are present in literature; however, substantially less work has been focused on ram pressure stripping in lower mass…
LoTSS jellyfish galaxies: I. Radio tails in low redshift clusters
I. D. Roberts, R. J. van Weeren, S. L. McGee +6
In this paper we present a large sample of jellyfish galaxies in low redshift clusters (z<0.05), identified through 120-168 MHz radio continuum from the LOFAR Two-metre Sky Survey…
Ram pressure stripping candidates in the Coma Cluster: Evidence for enhanced star formation
Ian D. Roberts, Laura C. Parker
The Coma cluster is the nearest massive () galaxy cluster, making it an excellent laboratory to probe the influence of the cluster environment…
"Observing" Unrelaxed Clusters in Dark Matter Simulations
Ian D. Roberts, Laura C. Parker
We present a detailed study of relaxed and unrelaxed galaxy clusters in a large dark-matter only simulation. Recent work has demonstrated clear differences between the galaxy popul…
Smaller stellar disc scale lengths in rich environments
Melanie L. Demers, Laura C. Parker, Ian D. Roberts
We investigate the dependence of stellar disc scale lengths on environment for a sample of Sloan Digital Sky Survey Data Release 7 galaxies with published photometric bulge-disc de…
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…
Red Misfits in the Sloan Digital Sky Survey: Properties of Star-forming Red Galaxies
Fraser A. Evans, Laura C. Parker, Ian D. Roberts
We study Red Misfits, a population of red, star-forming galaxies in the local Universe. We classify galaxies based on inclination-corrected optical colours and specific star format…
Connecting optical and X-ray tracers of galaxy cluster relaxation
Ian D. Roberts, Laura C. Parker, Julie Hlavacek-Larrondo
Substantial effort has been devoted in determining the ideal proxy for quantifying the morphology of the hot intracluster medium in clusters of galaxies. These proxies, based on X-…