Abstract
Context. The morphology-density relation manifests the environmental dependence of the formation and evolution of galaxies as they continuously migrate through the cosmic web to ever denser environments. As gas-rich galaxies traverse the outskirts and inner regions of galaxy clusters, they experience sudden and radical changes in their gas content and star formation activity.
Aims: The goal of this work is to gain an H I perspective on gas depletion mechanisms acting on galaxies and galaxy groups that are being accreted by a moderately massive galaxy cluster. We aim to study the relative importance and efficiency of processes such as ram-pressure stripping and tidal interactions as well as their dependency on the local and global environment of galaxies in the cluster core and in its surroundings.
Methods: We have conducted a blind radio continuum and H I spectral line imaging survey with the MeerKAT radio telescope of a 2° × 2° area centred on the galaxy cluster Abell 2626. We have used the CARAcal pipeline to reduce the data, SoFiA to detect sources within the H I data cube, and GIPSY to construct spatially resolved information on the H I morphologies and kinematics of the H I detected galaxies.
Results: We have detected H I in 219 galaxies with optical counterparts within the entire surveyed volume. We present the H I properties of each of the detected galaxies as a data catalogue and as an atlas page for each galaxy, including H I column-density maps, velocity fields, position-velocity diagrams, and global H I profiles. These data will also be used for case studies of identified `jellyfish' galaxies and galaxy population studies by means of morphological classification of the direct H I detections as well as using the H I stacking technique. Full Figs. B.1 and B.2 (atlas) are available at https://www.aanda.org Full Table A.1 is only available at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (ftp://130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/cat/J/A+A/654/A173
Aims: The goal of this work is to gain an H I perspective on gas depletion mechanisms acting on galaxies and galaxy groups that are being accreted by a moderately massive galaxy cluster. We aim to study the relative importance and efficiency of processes such as ram-pressure stripping and tidal interactions as well as their dependency on the local and global environment of galaxies in the cluster core and in its surroundings.
Methods: We have conducted a blind radio continuum and H I spectral line imaging survey with the MeerKAT radio telescope of a 2° × 2° area centred on the galaxy cluster Abell 2626. We have used the CARAcal pipeline to reduce the data, SoFiA to detect sources within the H I data cube, and GIPSY to construct spatially resolved information on the H I morphologies and kinematics of the H I detected galaxies.
Results: We have detected H I in 219 galaxies with optical counterparts within the entire surveyed volume. We present the H I properties of each of the detected galaxies as a data catalogue and as an atlas page for each galaxy, including H I column-density maps, velocity fields, position-velocity diagrams, and global H I profiles. These data will also be used for case studies of identified `jellyfish' galaxies and galaxy population studies by means of morphological classification of the direct H I detections as well as using the H I stacking technique. Full Figs. B.1 and B.2 (atlas) are available at https://www.aanda.org Full Table A.1 is only available at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (ftp://130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/cat/J/A+A/654/A173
| Original language | English |
|---|---|
| Article number | A173 |
| Number of pages | 19 |
| Journal | Astronomy and astrophysics |
| Volume | 654 |
| DOIs | |
| Publication status | Published - 1-Oct-2021 |
Keywords
- line: profiles
- galaxies: evolution
- galaxies: clusters: general
- radio lines: galaxies
- Astrophysics - Astrophysics of Galaxies
Datasets
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MeerKAT 21-cm HI imaging of Abell 2626
Healy, J. (Contributor), Deb, T. (Contributor), Verheijen, M. (Contributor), Blyth, S. (Contributor), Serra, P. (Contributor), Ramatsoku, M. (Contributor) & Vulcani, B. (Contributor), Strasbourg Astronomical Data Center, 27-Oct-2021
DOI: 10.26093/cds/vizier.36540173, https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/654/A173
Dataset