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…

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…

Multiphase Astrophysics to Unveil the Virgo Environment (MAUVE) Open

Barbara Catinella, Jiayi Sun, Amelia Fraser-McKelvie, Adam B. Watts, Andrew Battisti , et al. · 2025

The Multiphase Astrophysics to Unveil the Virgo Environment (MAUVE) project is a multi-facility programme exploring how dense environments transform galaxies. Combining a VLT/MUSE P110 Large Programme and ALMA observations of 40 late- type…

ESO 137–001: A jellyfish galaxy model Open

B. Vollmer, Ming Sun, Pavel Jáchym, M. Fossati, A. Boselli · 2024

Ram-pressure stripping of the spiral galaxy ESO 137−001 within the highly dynamical intracluster medium (ICM) of the Norma cluster lead to spectacular extraplanar CO, optical, H α , UV, and X-ray emission. The H α and X-ray tails extend up…

ESO 137-001 -- a jellyfish galaxy model Open

B. Vollmer, Ming Sun, Pavel Jáchym, M. Fossati, A. Boselli · 2024

Ram pressure stripping of the spiral galaxy ESO 137-001 within the highly dynamical intracluster medium (ICM) of the Norma cluster lead to spectacular extraplanar CO, optical, H$α$, UV, and X-ray emission. The Halpha and X-ray tails extend…

Ram-pressure stripped radio tail and two ULXs in the spiral galaxy HCG 97b Open

Dan Hu, Michal Zajaček, Norbert Werner, Romana Grossová, Pavel Jáchym , et al. · 2023

We report LOFAR and Very Large Array (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, 1.4 GHz, and 4.86 GHz is elongated alon…

Ram-pressure stripped radio tail and two ULXs in the spiral galaxy HCG 97b Open

Dan Hu, Michal Zajaček, Norbert Werner, Romana Grossová, Pavel Jáchym , et al. · 2023

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, 1.4 GHz and 4.86 GHz is elongated along the optical disk a…

Tracing the kinematics of the whole ram-pressure-stripped tails in ESO 137-001 Open

Rongxin Luo, Ming Sun, Pavel Jáchym, W.L. Waldron, Matteo Fossati , et al. · 2023

Ram pressure stripping (RPS) is an important process to affect the evolution of cluster galaxies and their surrounding environment. We present a large MUSE mosaic for ESO 137-001 and its stripped tails, and study the detailed distributions…

Turbulence in the Tail of a Jellyfish Galaxy Open

Yuan Li, Rongxin Luo, Matteo Fossati, Ming Sun, Pavel Jáchym · 2023

When galaxies move through the intracluster medium (ICM) inside galaxy clusters, the ram pressure of the ICM can strip the gas from galaxies. The stripped gas forms tails on the trailing side. These galaxies are hence dubbed ``jellyfish ga…

Turbulence in the tail of a jellyfish galaxy Open

Yuan Li, Rongxin Luo, Matteo Fossati, Ming Sun, Pavel Jáchym · 2023

When galaxies move through the intracluster medium (ICM) inside galaxy clusters, the ram pressure of the ICM can strip the gas from galaxies. The stripped gas forms tails on the trailing side. These galaxies are hence dubbed ‘jellyfish gal…

HST viewing of spectacular star-forming trails behind ESO 137-001 Open

W.L. Waldron, Ming Sun, Rongxin Luo, Sunil Laudari, Marios Chatzikos , et al. · 2023

We present the results from the HST WFC3 and ACS data on an archetypal galaxy undergoing ram pressure stripping (RPS), ESO 137-001, in the nearby cluster Abell 3627. ESO 137-001 is known to host a prominent stripped tail detected in many b…

Tracing the kinematics of the whole ram pressure stripped tails in ESO 137-001 Open

Rongxin Luo, Ming Sun, Pavel Jáchym, Will Waldron, Matteo Fossati , et al. · 2022

Ram pressure stripping (RPS) is an important process to affect the evolution of cluster galaxies and their surrounding environment. We present a large MUSE mosaic for ESO 137-001 and its stripped tails, and study the detailed distributions…

The Arecibo Galaxy Environment Survey. XII. Optically Dark H i Clouds in the Leo I Group Open

R. Taylor, J. Köppen, Pavel Jáchym, Robert Minchin, Jan Palouš , et al. · 2022

Using data from the Arecibo Galaxy Environment Survey, we report the discovery of five H i clouds in the Leo I group without detected optical counterparts. Three of the clouds are found midway between M96 and M95, one is only from th…

The Arecibo Galaxy Environment Survey XII : Optically dark HI clouds in the Leo I Group Open

R. Taylor, J. Köppen, Pavel Jáchym, Robert Minchin, Jan Palouš , et al. · 2022

Using data from the Arecibo Galaxy Environment Survey, we report the discovery of five HI clouds in the Leo I group without detected optical counterparts. Three of the clouds are found midway between M96 and M95, one is only 10$^{\prime}$ …

Non-star-forming molecular gas in the Abell 1367 intra-cluster multiphase orphan cloud Open

Pavel Jáchym, Ming Sun, Masafumi Yagi, Chong Ge, Rongxin Luo , et al. · 2022

We report the detection of CO emission in the recently discovered multiphase isolated gas cloud in the nearby galaxy cluster Abell 1367. The cloud is located about 800 kpc in projection from the center of the cluster and at a projected dis…

A universal correlation between warm and hot gas in the stripped tails of cluster galaxies Open

Ming Sun, Chong Ge, Rongxin Luo, Masafumi Yagi, Pavel Jáchym , et al. · 2021

ESO 137-002: a large spiral undergoing edge-on ram-pressure stripping with little star formation in the tail Open

Sunil Laudari, Pavel Jáchym, Ming Sun, W.L. Waldron, Marios Chatzikos , et al. · 2021

Ram pressure stripping (RPS) is an important mechanism for galaxy evolution. In this work, we present results from HST and APEX observations of one RPS galaxy, ESO 137-002 in the closest rich cluster Abell 3627. The galaxy is known to host…

ESO 137-002: a large spiral undergoing edge-on ram-pressure stripping with little star formation in the tail Open

Sunil Laudari, Pavel Jáchym, Ming Sun, W.L. Waldron, Marios Chatzikos , et al. · 2021

Ram pressure stripping (RPS) is an important mechanism for galaxy evolution. In this work, we present results from HST and APEX observations of one RPS galaxy, ESO 137-002 in the closest rich cluster Abell 3627. The galaxy is known to host…

Molecular Gas Filaments and Fallback in the Ram Pressure Stripped Coma Spiral NGC 4921 Open

W. J. Cramer, Jeffrey D. P. Kenney, Stephanie Tonnesen, Rory Smith, Tony Wong , et al. · 2021

We investigate the effects of ram pressure on the molecular interstellar medium (ISM) in the disk of the Coma cluster galaxy NGC 4921 via high-resolution CO observations. We present 6″ resolution CARMA CO(1−0) observations of the full disk…

The BIG X-ray tail Open

Chong Ge, Ming Sun, Masafumi Yagi, Matteo Fossati, W. Forman , et al. · 2021

Galaxy clusters grow primarily through the continuous accretion of group-scale haloes. Group galaxies experience preprocessing during their journey into clusters. A star-bursting compact group, the Blue Infalling Group (BIG), is plunging i…

Molecular gas filaments and fallback in the ram pressure stripped Coma\n spiral NGC 4921 Open

W. J. Cramer, Jeffrey D. P. Kenney, Stephanie Tonnesen, Rory Smith, Tony Wong , et al. · 2021

We investigate the effects of ram pressure on the molecular ISM in the disk\nof the Coma cluster galaxy NGC 4921, via high resolution CO observations. We\npresent 6" resolution CARMA CO(1-0) observations of the full disk, and 0.4"\nresolut…

An H α/X-ray orphan cloud as a signpost of intracluster medium clumping Open

Chong Ge, Rongxin Luo, Ming Sun, Masafumi Yagi, Pavel Jáchym , et al. · 2021

Recent studies have highlighted the potential significance of intracluster medium (ICM) clumping and its important implications for cluster cosmology and baryon physics. Many of the ICM clumps can originate from infalling galaxies, as stri…

A universal correlation between warm and hot gas in the stripped tails\n of cluster galaxies Open

Ming Sun, Chong Ge, Rongxin Luo, Masafumi Yagi, Pavel Jáchym , et al. · 2021

The impact of ram pressure stripping on galaxy evolution is well known.\nRecent multi-wavelength data have revealed many examples of galaxies undergoing\nstripping, often accompanied with multi-phase tails. As energy transfer in the\nmulti…

The ram pressure stripped radio tails of galaxies in the Coma cluster Open

Hao Chen, Ming Sun, Masafumi Yagi, H. Bravo–Alfaro, E. Brinks , et al. · 2020

Previous studies have revealed a population of galaxies in galaxy clusters with ram pressure stripped (RPS) tails of gas and embedded young stars. We observed 1.4 GHz continuum and H i emission with the Very Large Array in its B-configurat…

Ram pressure stripping made easy: an analytical approach Open

J. Köppen, Pavel Jáchym, R. Taylor, Jan Palouš · 2018

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Molecular Gas Dominated 50 kpc Ram Pressure Stripped Tail of the Coma Galaxy D100<sup>*</sup> Open

Pavel Jáchym, Ming Sun, Jeffrey D. P. Kenney, L. Cortese, F. Combes , et al. · 2017

We have discovered large amounts of molecular gas, as traced by CO emission, in the ram pressure stripped gas tail of the Coma cluster galaxy D100 (GMP 2910), out to large distances of about 50 kpc. D100 has a 60 kpc long, strikingly narro…

Kinematic clues to the origins of starless HI clouds : dark galaxies or tidal debris? Open

R. Taylor, J. I. Davies, Pavel Jáchym, Olivia Keenan, Robert Minchin , et al. · 2017

Isolated H i clouds with no optical counterparts are often taken as evidence for galaxy–galaxy interactions, though an alternative hypothesis is that these are primordial ‘dark galaxies’ that have not formed stars. Similarly, certain kinem…

Attack of the flying snakes: formation of isolated H i clouds by fragmentation of long streams Open

R. Taylor, J. I. Davies, Pavel Jáchym, Olivia Keenan, Robert Minchin , et al. · 2016

The existence of long (>100 kpc) H i streams and small (i clouds is well known. While the formation of the streams has been investigated extensively, and the isolated clouds are often purported to be interaction debris,…

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