Quiescent Ultra-diffuse galaxies in the field originating from backsplash orbits. Benavides, J. A., Sales, L. V., Abadi, M. G., Pillepich, A., Nelson, D., Marinacci, F., Cooper, M., Pakmor, R., Torrey, P., Vogelsberger, M., & Hernquist, L. Technical Report September, 2021. Publication Title: arXiv e-prints ADS Bibcode: 2021arXiv210901677B Type: article![Quiescent Ultra-diffuse galaxies in the field originating from backsplash orbits [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper abstract bibtex Ultra-diffuse galaxies (UDGs) are the lowest-surface brightness galaxies known, with typical stellar masses of dwarf galaxies but sizes similar to larger galaxies like the Milky Way. The reason for their extended sizes is debated, with suggested internal processes like angular momentum, feedback or mergers versus external mechanisms or a combination of both. Observationally, we know that UDGs are red and quiescent in groups and clusters while their counterparts in the field are blue and star-forming. This dichotomy suggests environmental effects as main culprit. However, this scenario is challenged by recent observations of isolated quiescent UDGs in the field. Here we use \${\textbackslash}Lambda\$CDM cosmological hydrodynamical simulation to show that isolated quenched UDGs are formed as backsplash galaxies that were once satellites of another galactic, group or cluster halo but are today a few Mpc away from them. These interactions, albeit brief, remove the gas and tidally strip the outskirts of the dark matter haloes of the now quenched seemingly-isolated UDGs, which are born as star-forming field UDGs occupying dwarf-mass dark matter haloes. Quiescent UDGs may therefore be found in non-negligible numbers in filaments and voids, bearing the mark of past interactions as stripped outer haloes devoid of dark matter and gas compared to dwarfs with similar stellar content.
@techreport{2021arXiv210901677B,
title = {Quiescent {Ultra}-diffuse galaxies in the field originating from backsplash orbits},
url = {https://ui.adsabs.harvard.edu/abs/2021arXiv210901677B},
abstract = {Ultra-diffuse galaxies (UDGs) are the lowest-surface brightness galaxies known, with typical stellar masses of dwarf galaxies but sizes similar to larger galaxies like the Milky Way. The reason for their extended sizes is debated, with suggested internal processes like angular momentum, feedback or mergers versus external mechanisms or a combination of both. Observationally, we know that UDGs are red and quiescent in groups and clusters while their counterparts in the field are blue and star-forming. This dichotomy suggests environmental effects as main culprit. However, this scenario is challenged by recent observations of isolated quiescent UDGs in the field. Here we use \${\textbackslash}Lambda\$CDM cosmological hydrodynamical simulation to show that isolated quenched UDGs are formed as backsplash galaxies that were once satellites of another galactic, group or cluster halo but are today a few Mpc away from them. These interactions, albeit brief, remove the gas and tidally strip the outskirts of the dark matter haloes of the now quenched seemingly-isolated UDGs, which are born as star-forming field UDGs occupying dwarf-mass dark matter haloes. Quiescent UDGs may therefore be found in non-negligible numbers in filaments and voids, bearing the mark of past interactions as stripped outer haloes devoid of dark matter and gas compared to dwarfs with similar stellar content.},
urldate = {2021-09-07},
author = {Benavides, José A. and Sales, Laura V. and Abadi, Mario. G. and Pillepich, Annalisa and Nelson, Dylan and Marinacci, Federico and Cooper, Michael and Pakmor, Ruediger and Torrey, Paul and Vogelsberger, Mark and Hernquist, Lars},
month = sep,
year = {2021},
note = {Publication Title: arXiv e-prints
ADS Bibcode: 2021arXiv210901677B
Type: article},
keywords = {Astrophysics - Astrophysics of Galaxies},
}
Downloads: 0
{"_id":"2me3unSTfiSHjHchR","bibbaseid":"benavides-sales-abadi-pillepich-nelson-marinacci-cooper-pakmor-etal-quiescentultradiffusegalaxiesinthefieldoriginatingfrombacksplashorbits-2021","author_short":["Benavides, J. A.","Sales, L. V.","Abadi, M. G.","Pillepich, A.","Nelson, D.","Marinacci, F.","Cooper, M.","Pakmor, R.","Torrey, P.","Vogelsberger, M.","Hernquist, L."],"bibdata":{"bibtype":"techreport","type":"techreport","title":"Quiescent Ultra-diffuse galaxies in the field originating from backsplash orbits","url":"https://ui.adsabs.harvard.edu/abs/2021arXiv210901677B","abstract":"Ultra-diffuse galaxies (UDGs) are the lowest-surface brightness galaxies known, with typical stellar masses of dwarf galaxies but sizes similar to larger galaxies like the Milky Way. The reason for their extended sizes is debated, with suggested internal processes like angular momentum, feedback or mergers versus external mechanisms or a combination of both. Observationally, we know that UDGs are red and quiescent in groups and clusters while their counterparts in the field are blue and star-forming. This dichotomy suggests environmental effects as main culprit. However, this scenario is challenged by recent observations of isolated quiescent UDGs in the field. Here we use \\${\\textbackslash}Lambda\\$CDM cosmological hydrodynamical simulation to show that isolated quenched UDGs are formed as backsplash galaxies that were once satellites of another galactic, group or cluster halo but are today a few Mpc away from them. These interactions, albeit brief, remove the gas and tidally strip the outskirts of the dark matter haloes of the now quenched seemingly-isolated UDGs, which are born as star-forming field UDGs occupying dwarf-mass dark matter haloes. Quiescent UDGs may therefore be found in non-negligible numbers in filaments and voids, bearing the mark of past interactions as stripped outer haloes devoid of dark matter and gas compared to dwarfs with similar stellar content.","urldate":"2021-09-07","author":[{"propositions":[],"lastnames":["Benavides"],"firstnames":["José","A."],"suffixes":[]},{"propositions":[],"lastnames":["Sales"],"firstnames":["Laura","V."],"suffixes":[]},{"propositions":[],"lastnames":["Abadi"],"firstnames":["Mario.","G."],"suffixes":[]},{"propositions":[],"lastnames":["Pillepich"],"firstnames":["Annalisa"],"suffixes":[]},{"propositions":[],"lastnames":["Nelson"],"firstnames":["Dylan"],"suffixes":[]},{"propositions":[],"lastnames":["Marinacci"],"firstnames":["Federico"],"suffixes":[]},{"propositions":[],"lastnames":["Cooper"],"firstnames":["Michael"],"suffixes":[]},{"propositions":[],"lastnames":["Pakmor"],"firstnames":["Ruediger"],"suffixes":[]},{"propositions":[],"lastnames":["Torrey"],"firstnames":["Paul"],"suffixes":[]},{"propositions":[],"lastnames":["Vogelsberger"],"firstnames":["Mark"],"suffixes":[]},{"propositions":[],"lastnames":["Hernquist"],"firstnames":["Lars"],"suffixes":[]}],"month":"September","year":"2021","note":"Publication Title: arXiv e-prints ADS Bibcode: 2021arXiv210901677B Type: article","keywords":"Astrophysics - Astrophysics of Galaxies","bibtex":"@techreport{2021arXiv210901677B,\n\ttitle = {Quiescent {Ultra}-diffuse galaxies in the field originating from backsplash orbits},\n\turl = {https://ui.adsabs.harvard.edu/abs/2021arXiv210901677B},\n\tabstract = {Ultra-diffuse galaxies (UDGs) are the lowest-surface brightness galaxies known, with typical stellar masses of dwarf galaxies but sizes similar to larger galaxies like the Milky Way. The reason for their extended sizes is debated, with suggested internal processes like angular momentum, feedback or mergers versus external mechanisms or a combination of both. Observationally, we know that UDGs are red and quiescent in groups and clusters while their counterparts in the field are blue and star-forming. This dichotomy suggests environmental effects as main culprit. However, this scenario is challenged by recent observations of isolated quiescent UDGs in the field. Here we use \\${\\textbackslash}Lambda\\$CDM cosmological hydrodynamical simulation to show that isolated quenched UDGs are formed as backsplash galaxies that were once satellites of another galactic, group or cluster halo but are today a few Mpc away from them. These interactions, albeit brief, remove the gas and tidally strip the outskirts of the dark matter haloes of the now quenched seemingly-isolated UDGs, which are born as star-forming field UDGs occupying dwarf-mass dark matter haloes. Quiescent UDGs may therefore be found in non-negligible numbers in filaments and voids, bearing the mark of past interactions as stripped outer haloes devoid of dark matter and gas compared to dwarfs with similar stellar content.},\n\turldate = {2021-09-07},\n\tauthor = {Benavides, José A. and Sales, Laura V. and Abadi, Mario. G. and Pillepich, Annalisa and Nelson, Dylan and Marinacci, Federico and Cooper, Michael and Pakmor, Ruediger and Torrey, Paul and Vogelsberger, Mark and Hernquist, Lars},\n\tmonth = sep,\n\tyear = {2021},\n\tnote = {Publication Title: arXiv e-prints\nADS Bibcode: 2021arXiv210901677B\nType: article},\n\tkeywords = {Astrophysics - Astrophysics of Galaxies},\n}\n\n","author_short":["Benavides, J. A.","Sales, L. V.","Abadi, M. G.","Pillepich, A.","Nelson, D.","Marinacci, F.","Cooper, M.","Pakmor, R.","Torrey, P.","Vogelsberger, M.","Hernquist, L."],"key":"2021arXiv210901677B","id":"2021arXiv210901677B","bibbaseid":"benavides-sales-abadi-pillepich-nelson-marinacci-cooper-pakmor-etal-quiescentultradiffusegalaxiesinthefieldoriginatingfrombacksplashorbits-2021","role":"author","urls":{"Paper":"https://ui.adsabs.harvard.edu/abs/2021arXiv210901677B"},"keyword":["Astrophysics - Astrophysics of Galaxies"],"metadata":{"authorlinks":{}}},"bibtype":"techreport","biburl":"https://bibbase.org/zotero/polyphant","dataSources":["7gvjSdWrEu7z5vjjj"],"keywords":["astrophysics - astrophysics of galaxies"],"search_terms":["quiescent","ultra","diffuse","galaxies","field","originating","backsplash","orbits","benavides","sales","abadi","pillepich","nelson","marinacci","cooper","pakmor","torrey","vogelsberger","hernquist"],"title":"Quiescent Ultra-diffuse galaxies in the field originating from backsplash orbits","year":2021}