Year: 2025
Type: article
Abstract: The Virgo Filament Survey (VFS) is a comprehensive study of galaxies that reside in the extended filamentary structures surrounding the Virgo Cluster, out to 12 virial radii. The primary goal is to characterize all of the dominant baryonic components within galaxies and to understand whether and how they are affected by the filament environment. A key constituent of VFS is a narrowband H α imaging survey of over 600 galaxies, VFS-H α . The H α images reveal detailed, resolved maps of the ionized gas and massive star formation. This imaging is particularly powerful as a probe of environmentally induced quenching because different physical processes affect the spatial distribution of star formation in different ways. In this paper, we present the first results from the VFS-H α for the NGC 5364 group, a low-mass ( log 10 ( M dyn / M ⊙ ) < 13 ) system located at the western edge of the Virgo III filament. We combine H α imaging with resolved H i observations from MeerKAT for eight group members. These galaxies exhibit peculiar morphologies, including strong distortions in the stars and the gas, truncated H i and H α disks, H i tails, extraplanar H α emission, and off-center H α emission. These signatures are suggestive of environmental processing such as tidal interactions, ram pressure stripping, and starvation. We quantify the role of ram pressure stripping expected in this group, and find that it can explain the cases of H i tails and truncated H α for all but one of the disk-dominated galaxies. Our observations indicate that multiple physical mechanisms are disrupting the baryon cycle in these group galaxies.
Source: The Astrophysical Journal
Authors: Rose A. Finn, Gregory Rudnick, Pascale Jablonka, Mpati Ramatsoku, Gautam Nagaraj, Benedetta Vulcani, Rebecca A. Koopmann, Matteo Fossati, James Agostino, Yannick Bahé, Santiago Garcia-Burillo, Gianluca Castignani, Francoise Combes, Kim Conger, Gabriella De Lucia, Vandana Desai, John Moustakas, Dara Norman, Damien Sperone-Longin, Melinda Townsend, Lizhi Xie, Daria Zakharova, Dennis Zaritsky
Institutions: Siena College, University of Kansas, École Polytechnique Fédérale de Lausanne, Rhodes University, South African Radio Astronomy Observatory, Osservatorio Astronomico di Cagliari, National Institute for Astrophysics, Osservatorio Astronomico di Padova, Union College, University of Milano-Bicocca, University of Toledo, Spanish National Observatory, Osservatorio di Astrofisica e Scienza dello Spazio, Centre National de la Recherche Scientifique, Collège de France, Université Paris Sciences et Lettres, Observatoire de Paris, Sorbonne Université, Laboratoire d’Etudes du Rayonnement et de la Matière en Astrophysique et Atmosphères, Trieste Astronomical Observatory, California Institute of Technology, NSF NOIRLab, Tianjin Normal University, University of Padua, University of Arizona
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $4,499
Funders: National Science Foundation, U.S. Department of Energy, National Aeronautics and Space Administration, University of Pennsylvania, Ohio State University, California Institute of Technology, University of Chicago, University of Michigan, University of Portsmouth, National Energy Research Scientific Computing Center, University College London, University of Nottingham, University of Sussex, Deutsche Forschungsgemeinschaft, Chinese Academy of Sciences, Financiadora de Estudos e Projetos, University of Illinois at Urbana-Champaign, Office of Science, Jet Propulsion Laboratory, Science and Technology Facilities Council, Division of Astronomical Sciences, High Energy Physics, Integrated Electronics Engineering Center, Binghamton University, Argonne National Laboratory, Fermilab, Lawrence Berkeley National Laboratory, SLAC National Accelerator Laboratory
Awards: G1039895795, G1313983767, G1800429324, G1813527838, G272672434, Collaborative Research: RUI: Tracing Galaxy Quenching in the Cosmic Web With Spatially-Resolved Star-Formation Maps, G3204085874, RUI: Collaborative Research: The Effect of Filaments on the Gas in Galaxies, G387521742, G4392917094, G498139845, Collaborative Research: The Effect of Filaments on the Gas in Galaxies, G6066813238, G6876926712, Management and Operations of the National Optical Astronomy Observatory, G7406122311, G7861570460, G988696487
OpenAlex ID: W4410417090