Explanipedia

MAUVE-MUSE: A Star Formation-driven Outflow Caught in the Act of Quenching the Stripped Virgo Galaxy NGC 4064 Open

Amy Attwater, Barbara Catinella, L. Cortese, Timothy A. Davis, Toby Brown , et al. · 2025

The rapid quenching of satellite galaxies in dense environments is often attributed to environmental processes such as ram pressure stripping. However, stripping alone cannot fully account for the removal of dense, star-forming gas in many…

PRIMAger General Observer programs: a π-sr Infrared Survey and other General Observer wide-field programs Open

D. Burgarella, M. Béthermin, A. Boselli, James Donnelan, C. D. Dowell , et al. · 2025

The PRobe far-Infrared Mission for Astrophysics (PRIMA) is a cryogenically-cooled, far-infrared (far-IR) observatory expected to begin serving the astronomical community by early 2030. The mission features two advanced instruments: PRIMAge…

Constraining Star Formation in M87 Using Deep Hubble Space Telescope UV Data Open

Prathamesh Tamhane, W.L. Waldron, Ming Sun, S. Martocchia, Claudia Maraston , et al. · 2025

We analyzed the deepest Hubble Space Telescope F275W ultraviolet (UV) imaging of M87 to obtain the most robust constraints on its star formation rate (SFR) and star formation history (SFH). After removing the galaxy continuum and globular …

Unveiling the nature and fate of the almost-dark cloud AGC 226178 through H I mapping Open

Yuzhu Sun, Hong-Xin Zhang, E. Brinks, Rory Smith, Fujia Li , et al. · 2025

Context. The origin of extragalactic, almost dark H I clouds with extreme gas-to-stellar mass ratios remains poorly understood. Aims. We investigated the nature and fate of the almost dark cloud AGC 226178, projected within the Virgo clust…

ALMA-JELLY. I. High Resolution CO(2–1) Observations of Ongoing Ram Pressure Stripping in NGC 4858 Reveal Asymmetrical Gas Tail Formation and Fallback Open

Harrison Souchereau, Jeffrey D. P. Kenney, Pavel Jáchym, Ming Sun, W. J. Cramer , et al. · 2025

We present new CO(2–1) observations (resolution ∼1″ = 460 pc) of the Coma cluster jellyfish galaxy NGC 4858 obtained from the ALMA-JELLY large program. Analyzing this data alongside complimentary Subaru H α and Hubble Space Telescope (F600…

Low surface brightness structures from annotated deep CFHT images: effects of the host galaxy’s properties and environment Open

Elisabeth Sola, Pierre–Alain Duc, M Urbano, Felix Richards, Adeline Paiement , et al. · 2025

Hierarchical galactic evolution models predict that mergers drive galaxy growth, producing low surface brightness (LSB) tidal features that trace galaxies’ late assembly. These faint structures encode information about past mergers and are…

AVID: Formation and evolution of a coalesced major merger of late-type dwarf galaxies (VCC 479) on the outskirts of the Virgo cluster Open

Weibin Sun, Hong-Xin Zhang, Rory Smith, E. Brinks, Patrick Côté , et al. · 2025

Context. Dwarf-dwarf galaxy mergers are among the least explored aspects of dwarf galaxy pre-processing as they fall into clusters. Aims. We present the first case study of a coalesced late-type dwarf major merger (VCC 479; stellar mass ∼ …

Deep Galaxy Stellar Mass Functions As a Function of Star Formation Rate in the Virgo Cluster Environment Open

Cameron Morgan, Elizaveta Sazonova, Ian Roberts, Michael L. Balogh, Joel Roediger , et al. · 2025

We analyze deep ( M * ≳ 10 7 M ⊙ ) galaxy stellar mass functions (SMFs) of the Virgo cluster using stellar masses derived as part of the Next Generation Virgo Survey. The total SMF has a slope of , which is similar to or stee…

<i>Euclid</i>: Early Release Observations of ram-pressure stripping in the Perseus cluster Open

K. George, A. Boselli, J.-C. Cuillandre, M. Kümmel, A. Lançon , et al. · 2025

Euclid is delivering optical and near-infrared imaging data over 14 000 deg 2 on the sky at spatial resolution and surface brightness levels that can be used to understand the morphological transformation of galaxies within groups and clus…

Atacama Large Aperture Submillimeter Telescope (AtLAST) science: Gas and dust in nearby galaxies Open

Daizhong Liu, A. Saintonge, Caroline Bot, F. Kemper, Enrique López-Rodríguez , et al. · 2025

Understanding the physical processes that regulate star formation and galaxy evolution are major areas of activity in modern astrophysics. Nearby galaxies offer unique opportunities to inspect interstellar medium (ISM), star formation (SF)…

Deep galaxy stellar mass functions as a function of star formation rate in the Virgo cluster environment Open

Cameron Morgan, Elizaveta Sazonova, Ian Roberts, Michael L. Balogh, Joel Roediger , et al. · 2025

We analyze deep ($M_*\gtrsim10^7~{M}_{\odot}$) galaxy stellar mass functions (SMFs) of the Virgo cluster using stellar masses derived as part of the Next Generation Virgo Survey (NGVS). The total SMF has a slope of $α=-1.35^{+0.02}_{-0.02}…

Star formation beyond galaxies: widespread in-situ formation of intra-cluster stars Open

Niusha Ahvazi, Laura V. Sales, Julio F. Navarro, Andrew Benson, A. Boselli , et al. · 2024

We study the fraction of the intra-cluster light (ICL) formed in-situ in the three most massive clusters of the TNG50 simulation, with virial masses . We find that a significant fraction of ICL stars ( - ) are born in-situ. T…

ViCTORIA project: The LOFAR-MeerKAT view of active galactic nuclei in Virgo cluster early-type galaxies Open

Ana Spasić, H. W. Edler, Yan Su, M. Brüggen, F. de Gasperin , et al. · 2024

The evolution of active galactic nuclei (AGNs) is closely connected to their host galaxies and surroundings. Via feedback processes, AGNs can counteract the cooling of the intracluster medium (ICM) and suppress star formation in their host…

Atacama Large Aperture Submillimeter Telescope (AtLAST) science: Gas and dust in nearby galaxies Open

Daizhong Liu, A. Saintonge, Caroline Bot, F. Kemper, Enrique López-Rodríguez , et al. · 2024

Understanding the physical processes that regulate star formation and galaxy evolution are major areas of activity in modern astrophysics. Nearby galaxies offer unique opportunities to inspect interstellar medium (ISM), star formation (SF…

MAUVE: a 6 kpc bipolar outflow launched from NGC 4383, one of the most H <span>i</span>-rich galaxies in the Virgo cluster Open

Adam B. Watts, L. Cortese, Barbara Catinella, Amelia Fraser-McKelvie, Éric Emsellem , et al. · 2024

Stellar feedback-driven outflows are important regulators of the gas–star formation cycle. However, resolving outflow physics requires high-resolution observations that can only be achieved in very nearby galaxies, making suitable targets …

Star formation beyond galaxies: widespread in-situ formation of intra-cluster stars Open

Niusha Ahvazi, Laura V. Sales, Julio F. Navarro, Andrew Benson, A. Boselli , et al. · 2024

We study the fraction of the intra-cluster light (ICL) formed in-situ in the three most massive clusters of the TNG50 simulation, with virial masses $\sim 10^{14}$ M$_{\odot}$. We find that a significant fraction of ICL stars ($8\%$-$28\%$…

Atacama Large Aperture Submillimeter Telescope (AtLAST) science: Gas and dust in nearby galaxies Open

Daizhong Liu, A. Saintonge, Caroline Bot, F. Kemper, Enrique López-Rodríguez , et al. · 2024

Understanding the physical processes that regulate star formation and galaxy evolution are major areas of activity in modern astrophysics. Nearby galaxies offer unique opportunities to inspect interstellar medium (ISM), star formation (SF)…

ViCTORIA project: The LOFAR view of environmental effects in Virgo cluster star-forming galaxies Open

H. W. Edler, Ian Roberts, A. Boselli, F. de Gasperin, V. Heesen , et al. · 2024

Context. Environmental effects such as ram pressure stripping (RPS) shape the evolution of galaxies in dense regions. Aims. We used the nearby Virgo cluster as a laboratory to study the environmental effects on the nonthermal components of…

The dynamical state of bars in cluster dwarf galaxies: the cases of NGC 4483 and NGC 4516 Open

Virginia Cuomo, L. Morelli, J. A. L. Aguerri, E. M. Corsini, Victor P. Debattista , et al. · 2023

Dwarf barred galaxies are the perfect candidates for hosting slowly rotating bars. They are common in dense environments and have a relatively shallow potential well, making them prone to heating by interactions. When an interaction induce…

The dynamical state of bars in cluster dwarf galaxies: The cases of NGC 4483 and NGC 4516 Open

Virginia Cuomo, L. Morelli, J. A. L. Aguerri, E. M. Corsini, Victor P. Debattista , et al. · 2023

Dwarf barred galaxies are the perfect candidates for hosting slowly-rotating bars. They are common in dense environments and they have a relatively shallow potential well, making them prone to heating by interactions. When an interaction i…

Nearby galaxies in the LOFAR Two-metre Sky Survey Open

V. Heesen, Sebastian Schulz, M. Brüggen, H. W. Edler, M. Stein , et al. · 2023

Context. To understand galaxy evolution, it is essential to measure star formation rates (SFRs) across cosmic time. Aims. The use of radio continuum emission as an extinction-free tracer of star formation necessitates a good understanding …

ViCTORIA project: The LOFAR-view of environmental effects in Virgo Cluster star-forming galaxies Open

H. W. Edler, Ian Roberts, A. Boselli, F. de Gasperin, V. Heesen , et al. · 2023

Environmental effects such as ram-pressure stripping (RPS) shape the evolution of galaxies in dense regions. We use the nearby Virgo cluster as a laboratory to study environmental effects on the non-thermal components of star-forming galax…

VERTICO and IllustrisTNG: The Spatially Resolved Effects of Environment on Galactic Gas Open

Adam R. H. Stevens, Toby Brown, Benedikt Diemer, Annalisa Pillepich, Lars Hernquist , et al. · 2023

It has been shown in previous publications that the TNG100 simulation quantitatively reproduces the observed reduction in each of the total atomic and total molecular hydrogen gas for galaxies within massive halos, i.e., dense environments…

VERTICO and IllustrisTNG: The spatially resolved effects of environment on galactic gas Open

Adam R. H. Stevens, Toby Brown, Benedikt Diemer, Annalisa Pillepich, Lars Hernquist , et al. · 2023

It has been shown in previous publications that the TNG100 simulation quantitatively reproduces the observed reduction in each of the total atomic and total molecular hydrogen gas for galaxies within massive halos, i.e.~dense environments.…

FAST-ASKAP Synergy: Quantifying Coexistent Tidal and Ram Pressure Strippings in the NGC 4636 Group Open

X. Lin, Jing Wang, V. A. Kilborn, Eric W. Peng, L. Cortese , et al. · 2023

Combining new H i data from a synergetic survey of Australian Square Kilometre Array Pathfinder (ASKAP) Widefield ASKAP L -band Legacy All-sky Blind surveY and Five-hundred-meter Aperture Spherical radio Telescope with the Arecibo Legacy F…

VERTICO. VII. Environmental Quenching Caused by the Suppression of Molecular Gas Content and Star Formation Efficiency in Virgo Cluster Galaxies Open

Toby Brown, Ian Roberts, Mallory Thorp, Sara L. Ellison, Nikki Zabel , et al. · 2023

We study how environment regulates the star formation cycle of 33 Virgo Cluster satellite galaxies on 720 pc scales. We present the resolved star-forming main sequence for cluster galaxies, dividing the sample based on their global H i pro…

VERTICO VII: Environmental quenching caused by suppression of molecular gas content and star formation efficiency in Virgo Cluster galaxies Open

Toby Brown, Ian Roberts, Mallory Thorp, Sara L. Ellison, Nikki Zabel , et al. · 2023

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 for cluster galaxies, dividing the sample based on their glob…

Variation in optical and infrared properties of galaxies in relation to their surface brightness Open

Junais Madathodika, K. Małek, S. Boissier, William Pearson, A. Pollo , et al. · 2023

Although it is now recognized that low surface brightness galaxies (LSBs) constitute a large fraction of the number density of galaxies, many of their properties are still poorly known. Based on only a few studies, LSBs are often considere…

ViCTORIA project: MeerKAT HI observations of the ram pressure stripped galaxy NGC 4523 Open

A. Boselli, P. Serra, F. de Gasperin, B. Vollmer, P. Amram , et al. · 2023

We present the first results of a 21 cm HI line pilot observation carried out with MeerKAT in preparation for the ViCTORIA project, an untargeted survey of the Virgo galaxy cluster. The extraordinary quality of the data in terms of sensiti…

VICTORIA project: The LOFAR HBA Virgo Cluster Survey Open

H. W. Edler, F. de Gasperin, T. W. Shimwell, M. J. Hardcastle, A. Boselli , et al. · 2023

Context. The Virgo cluster is the nearest ( d = 16.5 Mpc) massive ( M ≥ 10 14 M ⊙ ) galaxy cluster and is therefore a prime target for studying astrophysical processes in dense large-scale environments. In the radio band, we can probe the …

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