Astrophysics at the University of Hull

Resilience of sloshing cold fronts against subsequent minor mergers (2022)
Journal Article
Vaezzadeh, I., Roediger, E., Cashmore, C., Hunt, M., Zuhone, J., Forman, W., Jones, C., Kraft, R., Nulsen, P., Su, Y., & Churazov, E. (2022). Resilience of sloshing cold fronts against subsequent minor mergers. Monthly notices of the Royal Astronomical Society, 514(1), 518-534. https://doi.org/10.1093/mnras/stac784

Minor mergers are common in galaxy clusters. They have the potential to create sloshing cold fronts (SCFs) in the intracluster medium of the cluster. However, the resilience of SCFs to subsequent minor mergers is unknown. Here we investigate the exte... Read More about Resilience of sloshing cold fronts against subsequent minor mergers.

GASP. XXI. Star Formation Rates in the Tails of Galaxies Undergoing Ram Pressure Stripping (2020)
Journal Article
Gullieuszik, M., Poggianti, B. M., McGee, S. L., Moretti, A., Vulcani, B., Tonnesen, S., Roediger, E., Jaffé, Y. L., Fritz, J., Franchetto, A., Omizzolo, A., Bettoni, D., Radovich, M., & Wolter, A. (2020). GASP. XXI. Star Formation Rates in the Tails of Galaxies Undergoing Ram Pressure Stripping. The Astrophysical journal, 899(1), Article 13. https://doi.org/10.3847/1538-4357/aba3cb

© 2020. The American Astronomical Society. All rights reserved.. Using MUSE observations from the GASP survey, we study 54 galaxies undergoing ram pressure stripping (RPS) and spanning a wide range in galaxy mass and host cluster mass. We use this ri... Read More about GASP. XXI. Star Formation Rates in the Tails of Galaxies Undergoing Ram Pressure Stripping.

GASP. XXII. the Molecular Gas Content of the JW100 Jellyfish Galaxy at z ∼ 0.05: Does Ram Pressure Promote Molecular Gas Formation? (2020)
Journal Article
Moretti, A., Paladino, R., Poggianti, B. M., Serra, P., Roediger, E., Gullieuszik, M., Tomičić, N., Radovich, M., Vulcani, B., Jaffé, Y. L., Fritz, J., Bettoni, D., Ramatsoku, M., & Wolter, A. (2020). GASP. XXII. the Molecular Gas Content of the JW100 Jellyfish Galaxy at z ∼ 0.05: Does Ram Pressure Promote Molecular Gas Formation?. The Astrophysical journal, 889(1), https://doi.org/10.3847/1538-4357/ab616a

Within the GASP survey, aimed at studying the effect of ram pressure stripping on star formation quenching in cluster galaxies, we analyze here ALMA observations of the jellyfish galaxy JW100. We find an unexpected large amount of molecular gas (∼2.5... Read More about GASP. XXII. the Molecular Gas Content of the JW100 Jellyfish Galaxy at z ∼ 0.05: Does Ram Pressure Promote Molecular Gas Formation?.

GASP XXIII: a jellyfish galaxy as an astrophysical laboratory of the baryonic cycle (2019)
Journal Article
Poggianti, B. M., Ignesti, A., Gitti, M., Wolter, A., Brighenti, F., Biviano, A., George, K., Vulcani, B., Gullieuszik, M., Moretti, A., Paladino, R., Bettoni, D., Franchetto, A., Jaffé, Y. L., Radovich, M., Roediger, E., Tomičić, N., Tonnesen, S., Bellhouse, C., Fritz, J., & Omizzolo, A. (2019). GASP XXIII: a jellyfish galaxy as an astrophysical laboratory of the baryonic cycle. The Astrophysical journal, 887(2), Article 155. https://doi.org/10.3847/1538-4357/ab5224

© 2019. The American Astronomical Society. All rights reserved. With MUSE, Chandra, VLA, ALMA, and UVIT data from the GASP program, we study the multiphase baryonic components in a jellyfish galaxy (JW100) with a stellar mass 3.2 × 1011 M o hosting a... Read More about GASP XXIII: a jellyfish galaxy as an astrophysical laboratory of the baryonic cycle.

The rotational profiles of cluster galaxies (2019)
Journal Article
Bilton, L. E., Hunt, M., Pimbblet, K. A., & Roediger, E. (2019). The rotational profiles of cluster galaxies. Monthly notices of the Royal Astronomical Society, 490(4), 5017-5032. https://doi.org/10.1093/mnras/stz2927

© 2019 The Author(s) We compile two samples of cluster galaxies with complimentary hydrodynamic and N-body analysis using FLASH code to ascertain how their differing populations drive their rotational profiles and to better understand their dynamical... Read More about The rotational profiles of cluster galaxies.

ALMA Unveils Widespread Molecular Gas Clumps in the Ram Pressure Stripped Tail of the Norma Jellyfish Galaxy (2019)
Journal Article
Jáchym, P., Kenney, J. D., Sun, M., Combes, F., Cortese, L., Scott, T. C., Sivanandam, S., Brinks, E., Roediger, E., Palouš, J., & Fumagalli, M. (2019). ALMA Unveils Widespread Molecular Gas Clumps in the Ram Pressure Stripped Tail of the Norma Jellyfish Galaxy. The Astrophysical journal, 883(2), Article 145. https://doi.org/10.3847/1538-4357/ab3e6c

© 2019 The American Astronomical Society. All rights reserved. We present the first high-resolution map of the cold molecular gas distribution as traced by CO(2-1) emission with ALMA in a long ram pressure stripped tail. The Norma cluster galaxy ESO... Read More about ALMA Unveils Widespread Molecular Gas Clumps in the Ram Pressure Stripped Tail of the Norma Jellyfish Galaxy.

Extended X-ray study of M49: The frontier of the Virgo cluster (2019)
Journal Article
Su, Y., Kraft, R. P., Nulsen, P. E. J., Jones, C., Maccarone, T. J., Mernier, F., Lovisari, L., Sheardown, A., Randall, S. W., Roediger, E., Fish, T. M., Forman, W. R., & Churazov, E. (2019). Extended X-ray study of M49: The frontier of the Virgo cluster. Astronomical Journal, 158(1), Article 6. https://doi.org/10.3847/1538-3881/ab1d51

The M49 group, residing outside the virial radius of the Virgo cluster, is falling onto the cluster from the south. We report results from deep XMM-Newton mosaic observations of M49. Its hot gas temperature is 0.8 keV at the group center and rises to... Read More about Extended X-ray study of M49: The frontier of the Virgo cluster.

Close-up view of an ongoing merger between the NGC 4839 group and the Coma cluster - a post-merger scenario (2019)
Journal Article
Lyskova, N., Churazov, E., Zhang, C., Forman, W., Jones, C., Dolag, K., Roediger, E., & Sheardown, A. (2019). Close-up view of an ongoing merger between the NGC 4839 group and the Coma cluster - a post-merger scenario. Monthly notices of the Royal Astronomical Society, 485(2), 2922-2934. https://doi.org/10.1093/mnras/stz597

We study a merger of the NGC 4839 group with the Coma cluster using X-ray observations from the XMM–Newton and Chandra telescopes. X-ray data show two prominent features: (i) a long (∼600 kpc in projection) and bent tail of cool gas trailing (towards... Read More about Close-up view of an ongoing merger between the NGC 4839 group and the Coma cluster - a post-merger scenario.

Constraining Gas Motions in the Intra-Cluster Medium (2019)
Journal Article
Simionescu, A., ZuHone, J., Zhuravleva, I., Churazov, E., Gaspari, M., Nagai, D., Werner, N., Roediger, E., Canning, R., Eckert, D., Gu, L., & Paerels, F. (2019). Constraining Gas Motions in the Intra-Cluster Medium. Space Science Reviews, 215(2), Article 24. https://doi.org/10.1007/s11214-019-0590-1

The detailed velocity structure of the diffuse X-ray emitting intra-cluster medium (ICM) remains one of the last missing key ingredients in understanding the microphysical properties of these hot baryons and constraining our models of the growth and... Read More about Constraining Gas Motions in the Intra-Cluster Medium.

The recent growth history of the Fornax Cluster derived from simultaneous sloshing and gas stripping: Simulating the infall of NGC 1404 (2018)
Journal Article
Sheardown, A., Roediger, E., Su, Y., Kraft, R. P., Fish, T., ZuHone, J. A., Forman, W. R., Jones, C., Churazov, E., & Nulsen, P. E. (2018). The recent growth history of the Fornax Cluster derived from simultaneous sloshing and gas stripping: Simulating the infall of NGC 1404. The Astrophysical journal, 865(2), 118. https://doi.org/10.3847/1538-4357/aadc0f

We derive the recent growth history of the Fornax Cluster, in particular the recent infall of the giant elliptical galaxy NGC 1404. We show, using a simple cluster minor merger simulation tailored to Fornax and NGC 1404, that a second or more likely... Read More about The recent growth history of the Fornax Cluster derived from simultaneous sloshing and gas stripping: Simulating the infall of NGC 1404.