The Dawes Review 9: The role of cold gas stripping on the star formation quenching of satellite galaxies. Cortese, L., Catinella, B., & Smith, R. arXiv e-prints, 2104:arXiv:2104.02193, April, 2021. ![The Dawes Review 9: The role of cold gas stripping on the star formation quenching of satellite galaxies [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper abstract bibtex One of the key open questions in extragalactic astronomy is what stops star formation in galaxies. While it is clear that the cold gas reservoir, which fuels the formation of new stars, must be affected first, how this happens and what are the dominant physical mechanisms involved is still a matter of debate. At least for satellite galaxies, it is generally accepted that internal processes alone cannot be responsible for fully quenching their star formation, but that environment should play an important, if not dominant, role. In nearby clusters, we see examples of cold gas being removed from the star-forming disks of galaxies moving through the intracluster medium, but whether active stripping is widespread and/or necessary to halt star formation in satellites, or quenching is just a consequence of the inability of these galaxies to replenish their cold gas reservoirs, remains unclear. In this work, we review the current status of environmental studies of cold gas in star-forming satellites in the local Universe from an observational perspective, focusing on the evidence for a physical link between cold gas stripping and quenching of the star formation. We find that stripping of cold gas is ubiquitous in satellite galaxies in both group and cluster environments. While hydrodynamical mechanisms such as ram pressure are important, the emerging picture across the full range of dark matter halos and stellar masses is a complex one, where different physical mechanisms may act simultaneously and cannot always be easily separated. Most importantly, we show that stripping does not always lead to full quenching, as only a fraction of the cold gas reservoir might be affected at the first pericentre passage. We argue that this is a key point to reconcile apparent tensions between statistical and detailed analyses of satellite galaxies...(abridged)
@article{cortese_dawes_2021,
title = {The {Dawes} {Review} 9: {The} role of cold gas stripping on the star formation quenching of satellite galaxies},
volume = {2104},
shorttitle = {The {Dawes} {Review} 9},
url = {http://adsabs.harvard.edu/abs/2021arXiv210402193C},
abstract = {One of the key open questions in extragalactic astronomy is what stops
star formation in galaxies. While it is clear that the cold gas
reservoir, which fuels the formation of new stars, must be affected
first, how this happens and what are the dominant physical mechanisms
involved is still a matter of debate. At least for satellite galaxies,
it is generally accepted that internal processes alone cannot be
responsible for fully quenching their star formation, but that
environment should play an important, if not dominant, role. In nearby
clusters, we see examples of cold gas being removed from the
star-forming disks of galaxies moving through the intracluster medium,
but whether active stripping is widespread and/or necessary to halt star
formation in satellites, or quenching is just a consequence of the
inability of these galaxies to replenish their cold gas reservoirs,
remains unclear. In this work, we review the current status of
environmental studies of cold gas in star-forming satellites in the
local Universe from an observational perspective, focusing on the
evidence for a physical link between cold gas stripping and quenching of
the star formation. We find that stripping of cold gas is ubiquitous in
satellite galaxies in both group and cluster environments. While
hydrodynamical mechanisms such as ram pressure are important, the
emerging picture across the full range of dark matter halos and stellar
masses is a complex one, where different physical mechanisms may act
simultaneously and cannot always be easily separated. Most importantly,
we show that stripping does not always lead to full quenching, as only a
fraction of the cold gas reservoir might be affected at the first
pericentre passage. We argue that this is a key point to reconcile
apparent tensions between statistical and detailed analyses of satellite
galaxies...(abridged)},
urldate = {2021-05-11},
journal = {arXiv e-prints},
author = {Cortese, L. and Catinella, B. and Smith, R.},
month = apr,
year = {2021},
keywords = {Astrophysics - Astrophysics of Galaxies},
pages = {arXiv:2104.02193},
}
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At least for satellite galaxies, it is generally accepted that internal processes alone cannot be responsible for fully quenching their star formation, but that environment should play an important, if not dominant, role. In nearby clusters, we see examples of cold gas being removed from the star-forming disks of galaxies moving through the intracluster medium, but whether active stripping is widespread and/or necessary to halt star formation in satellites, or quenching is just a consequence of the inability of these galaxies to replenish their cold gas reservoirs, remains unclear. In this work, we review the current status of environmental studies of cold gas in star-forming satellites in the local Universe from an observational perspective, focusing on the evidence for a physical link between cold gas stripping and quenching of the star formation. We find that stripping of cold gas is ubiquitous in satellite galaxies in both group and cluster environments. While hydrodynamical mechanisms such as ram pressure are important, the emerging picture across the full range of dark matter halos and stellar masses is a complex one, where different physical mechanisms may act simultaneously and cannot always be easily separated. Most importantly, we show that stripping does not always lead to full quenching, as only a fraction of the cold gas reservoir might be affected at the first pericentre passage. 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While it is clear that the cold gas\nreservoir, which fuels the formation of new stars, must be affected\nfirst, how this happens and what are the dominant physical mechanisms\ninvolved is still a matter of debate. At least for satellite galaxies,\nit is generally accepted that internal processes alone cannot be\nresponsible for fully quenching their star formation, but that\nenvironment should play an important, if not dominant, role. In nearby\nclusters, we see examples of cold gas being removed from the\nstar-forming disks of galaxies moving through the intracluster medium,\nbut whether active stripping is widespread and/or necessary to halt star\nformation in satellites, or quenching is just a consequence of the\ninability of these galaxies to replenish their cold gas reservoirs,\nremains unclear. In this work, we review the current status of\nenvironmental studies of cold gas in star-forming satellites in the\nlocal Universe from an observational perspective, focusing on the\nevidence for a physical link between cold gas stripping and quenching of\nthe star formation. We find that stripping of cold gas is ubiquitous in\nsatellite galaxies in both group and cluster environments. While\nhydrodynamical mechanisms such as ram pressure are important, the\nemerging picture across the full range of dark matter halos and stellar\nmasses is a complex one, where different physical mechanisms may act\nsimultaneously and cannot always be easily separated. Most importantly,\nwe show that stripping does not always lead to full quenching, as only a\nfraction of the cold gas reservoir might be affected at the first\npericentre passage. 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