The MUSE eXtremely Deep Field: Individual detections of Ly\\textbackslashalpha\ haloes around rest-frame UV-selected galaxies at z\textasciitilde2.9-4.4. Kusakabe, H., Verhamme, A., Blaizot, J., Garel, T., Wisotzki, L., Leclercq, F., Bacon, R., Schaye, J., Gallego, S. G., Kerutt, J., Matthee, J., Maseda, M., Nanayakkara, T., Pello, R., Richard, J., Tresse, L., Urrutia, T., & Vitte, E. arXiv:2201.07257 [astro-ph], January, 2022. arXiv: 2201.07257![The MUSE eXtremely Deep Field: Individual detections of Ly\\textbackslashalpha\ haloes around rest-frame UV-selected galaxies at z\textasciitilde2.9-4.4 [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper abstract bibtex Hydrogen Ly\$\{{\textbackslash}alpha\}\$ haloes (LAHs) are commonly used as a tracer of the circumgalactic medium (CGM) at high redshifts. In this work, we aim to explore the existence of Ly\$\{{\textbackslash}alpha\}\$ haloes around individual UV-selected galaxies, rather than around Ly\$\{{\textbackslash}alpha\}\$ emitters (LAEs), at high redshifts. Our sample was continuum-selected with F775W\textless=27.5, and spectroscopic redshifts were assigned or constrained for all the sources thanks to the deepest (100- to 140-hour) existing Very Large Telescope (VLT)/Multi-Unit Spectroscopic Explorer (MUSE) data with adaptive optics. The final sample includes 21 galaxies that are purely F775W-magnitude selected within the redshift range z=2.9-4.4 and within a UV magnitude range -20\textless=M1500\textless= -18, thus avoiding any bias toward LAEs. We tested whether galaxy's Ly\$\{{\textbackslash}alpha\}\$ emission is significantly more extended than the MUSE PSF-convolved continuum component. We find 17 LAHs and four non-LAHs. We report the first individual detections of extended Ly\$\{{\textbackslash}alpha\}\$ emission around non-LAEs. The Ly\$\{{\textbackslash}alpha\}\$ halo fraction is thus as high as \$81.0{\textasciicircum}\{+10.3\}_\{-11.2\}\$%, which is close to that for LAEs at z=3-6 in the literature. This implies that UV-selected galaxies generally have a large amount of hydrogen in their CGM. We derived the mean surface brightness (SB) profile for our LAHs with cosmic dimming corrections and find that Ly\$\{{\textbackslash}alpha\}\$ emission extends to 5.4 arcsec (\textasciitilde40 physical kpc at the midpoint redshift z=3.6) above the typical 1\$\{{\textbackslash}sigma\}\$ SB limit. The incidence rate of surrounding gas detected in Ly\$\{{\textbackslash}alpha\}\$ per one-dimensional line of sight per unit redshift, dn/dz, is estimated to be \$0.76{\textasciicircum}\{+0.09\}_\{-0.09\}\$ for galaxies with M1500\textless= -18 mag at z\textasciitilde3.7. Assuming that Ly\$\{{\textbackslash}alpha\}\$ emission and absorption arise in the same gas, this suggests, based on abundance matching, that LAHs trace the same gas as damped Ly\$\{{\textbackslash}alpha\}\$ systems (DLAs) and sub-DLAs.
@article{kusakabe_muse_2022,
title = {The {MUSE} {eXtremely} {Deep} {Field}: {Individual} detections of {Ly}\{{\textbackslash}alpha\} haloes around rest-frame {UV}-selected galaxies at z{\textasciitilde}2.9-4.4},
shorttitle = {The {MUSE} {eXtremely} {Deep} {Field}},
url = {http://arxiv.org/abs/2201.07257},
abstract = {Hydrogen Ly\$\{{\textbackslash}alpha\}\$ haloes (LAHs) are commonly used as a tracer of the circumgalactic medium (CGM) at high redshifts. In this work, we aim to explore the existence of Ly\$\{{\textbackslash}alpha\}\$ haloes around individual UV-selected galaxies, rather than around Ly\$\{{\textbackslash}alpha\}\$ emitters (LAEs), at high redshifts. Our sample was continuum-selected with F775W{\textless}=27.5, and spectroscopic redshifts were assigned or constrained for all the sources thanks to the deepest (100- to 140-hour) existing Very Large Telescope (VLT)/Multi-Unit Spectroscopic Explorer (MUSE) data with adaptive optics. The final sample includes 21 galaxies that are purely F775W-magnitude selected within the redshift range z=2.9-4.4 and within a UV magnitude range -20{\textless}=M1500{\textless}= -18, thus avoiding any bias toward LAEs. We tested whether galaxy's Ly\$\{{\textbackslash}alpha\}\$ emission is significantly more extended than the MUSE PSF-convolved continuum component. We find 17 LAHs and four non-LAHs. We report the first individual detections of extended Ly\$\{{\textbackslash}alpha\}\$ emission around non-LAEs. The Ly\$\{{\textbackslash}alpha\}\$ halo fraction is thus as high as \$81.0{\textasciicircum}\{+10.3\}\_\{-11.2\}\$\%, which is close to that for LAEs at z=3-6 in the literature. This implies that UV-selected galaxies generally have a large amount of hydrogen in their CGM. We derived the mean surface brightness (SB) profile for our LAHs with cosmic dimming corrections and find that Ly\$\{{\textbackslash}alpha\}\$ emission extends to 5.4 arcsec ({\textasciitilde}40 physical kpc at the midpoint redshift z=3.6) above the typical 1\$\{{\textbackslash}sigma\}\$ SB limit. The incidence rate of surrounding gas detected in Ly\$\{{\textbackslash}alpha\}\$ per one-dimensional line of sight per unit redshift, dn/dz, is estimated to be \$0.76{\textasciicircum}\{+0.09\}\_\{-0.09\}\$ for galaxies with M1500{\textless}= -18 mag at z{\textasciitilde}3.7. Assuming that Ly\$\{{\textbackslash}alpha\}\$ emission and absorption arise in the same gas, this suggests, based on abundance matching, that LAHs trace the same gas as damped Ly\$\{{\textbackslash}alpha\}\$ systems (DLAs) and sub-DLAs.},
urldate = {2022-01-21},
journal = {arXiv:2201.07257 [astro-ph]},
author = {Kusakabe, Haruka and Verhamme, Anne and Blaizot, Jeremy and Garel, Thibault and Wisotzki, Lutz and Leclercq, Floriane and Bacon, Roland and Schaye, Joop and Gallego, Sofia G. and Kerutt, Josephine and Matthee, Jorryt and Maseda, Michael and Nanayakkara, Themiya and Pello, Roser and Richard, Johan and Tresse, Laurence and Urrutia, Tanya and Vitte, Eloise},
month = jan,
year = {2022},
note = {arXiv: 2201.07257},
keywords = {Astrophysics - Astrophysics of Galaxies, Astrophysics - Cosmology and Nongalactic Astrophysics},
}
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{"_id":"3pk5iMNkKa9Ao2c54","bibbaseid":"kusakabe-verhamme-blaizot-garel-wisotzki-leclercq-bacon-schaye-etal-themuseextremelydeepfieldindividualdetectionsoflytextbackslashalphahaloesaroundrestframeuvselectedgalaxiesatztextasciitilde2944-2022","author_short":["Kusakabe, H.","Verhamme, A.","Blaizot, J.","Garel, T.","Wisotzki, L.","Leclercq, F.","Bacon, R.","Schaye, J.","Gallego, S. G.","Kerutt, J.","Matthee, J.","Maseda, M.","Nanayakkara, T.","Pello, R.","Richard, J.","Tresse, L.","Urrutia, T.","Vitte, E."],"bibdata":{"bibtype":"article","type":"article","title":"The MUSE eXtremely Deep Field: Individual detections of Ly\\\\textbackslashalpha\\ haloes around rest-frame UV-selected galaxies at z\\textasciitilde2.9-4.4","shorttitle":"The MUSE eXtremely Deep Field","url":"http://arxiv.org/abs/2201.07257","abstract":"Hydrogen Ly\\$\\{{\\textbackslash}alpha\\}\\$ haloes (LAHs) are commonly used as a tracer of the circumgalactic medium (CGM) at high redshifts. In this work, we aim to explore the existence of Ly\\$\\{{\\textbackslash}alpha\\}\\$ haloes around individual UV-selected galaxies, rather than around Ly\\$\\{{\\textbackslash}alpha\\}\\$ emitters (LAEs), at high redshifts. Our sample was continuum-selected with F775W\\textless=27.5, and spectroscopic redshifts were assigned or constrained for all the sources thanks to the deepest (100- to 140-hour) existing Very Large Telescope (VLT)/Multi-Unit Spectroscopic Explorer (MUSE) data with adaptive optics. The final sample includes 21 galaxies that are purely F775W-magnitude selected within the redshift range z=2.9-4.4 and within a UV magnitude range -20\\textless=M1500\\textless= -18, thus avoiding any bias toward LAEs. We tested whether galaxy's Ly\\$\\{{\\textbackslash}alpha\\}\\$ emission is significantly more extended than the MUSE PSF-convolved continuum component. We find 17 LAHs and four non-LAHs. We report the first individual detections of extended Ly\\$\\{{\\textbackslash}alpha\\}\\$ emission around non-LAEs. The Ly\\$\\{{\\textbackslash}alpha\\}\\$ halo fraction is thus as high as \\$81.0{\\textasciicircum}\\{+10.3\\}_\\{-11.2\\}\\$%, which is close to that for LAEs at z=3-6 in the literature. This implies that UV-selected galaxies generally have a large amount of hydrogen in their CGM. We derived the mean surface brightness (SB) profile for our LAHs with cosmic dimming corrections and find that Ly\\$\\{{\\textbackslash}alpha\\}\\$ emission extends to 5.4 arcsec (\\textasciitilde40 physical kpc at the midpoint redshift z=3.6) above the typical 1\\$\\{{\\textbackslash}sigma\\}\\$ SB limit. The incidence rate of surrounding gas detected in Ly\\$\\{{\\textbackslash}alpha\\}\\$ per one-dimensional line of sight per unit redshift, dn/dz, is estimated to be \\$0.76{\\textasciicircum}\\{+0.09\\}_\\{-0.09\\}\\$ for galaxies with M1500\\textless= -18 mag at z\\textasciitilde3.7. Assuming that Ly\\$\\{{\\textbackslash}alpha\\}\\$ emission and absorption arise in the same gas, this suggests, based on abundance matching, that LAHs trace the same gas as damped Ly\\$\\{{\\textbackslash}alpha\\}\\$ systems (DLAs) and sub-DLAs.","urldate":"2022-01-21","journal":"arXiv:2201.07257 [astro-ph]","author":[{"propositions":[],"lastnames":["Kusakabe"],"firstnames":["Haruka"],"suffixes":[]},{"propositions":[],"lastnames":["Verhamme"],"firstnames":["Anne"],"suffixes":[]},{"propositions":[],"lastnames":["Blaizot"],"firstnames":["Jeremy"],"suffixes":[]},{"propositions":[],"lastnames":["Garel"],"firstnames":["Thibault"],"suffixes":[]},{"propositions":[],"lastnames":["Wisotzki"],"firstnames":["Lutz"],"suffixes":[]},{"propositions":[],"lastnames":["Leclercq"],"firstnames":["Floriane"],"suffixes":[]},{"propositions":[],"lastnames":["Bacon"],"firstnames":["Roland"],"suffixes":[]},{"propositions":[],"lastnames":["Schaye"],"firstnames":["Joop"],"suffixes":[]},{"propositions":[],"lastnames":["Gallego"],"firstnames":["Sofia","G."],"suffixes":[]},{"propositions":[],"lastnames":["Kerutt"],"firstnames":["Josephine"],"suffixes":[]},{"propositions":[],"lastnames":["Matthee"],"firstnames":["Jorryt"],"suffixes":[]},{"propositions":[],"lastnames":["Maseda"],"firstnames":["Michael"],"suffixes":[]},{"propositions":[],"lastnames":["Nanayakkara"],"firstnames":["Themiya"],"suffixes":[]},{"propositions":[],"lastnames":["Pello"],"firstnames":["Roser"],"suffixes":[]},{"propositions":[],"lastnames":["Richard"],"firstnames":["Johan"],"suffixes":[]},{"propositions":[],"lastnames":["Tresse"],"firstnames":["Laurence"],"suffixes":[]},{"propositions":[],"lastnames":["Urrutia"],"firstnames":["Tanya"],"suffixes":[]},{"propositions":[],"lastnames":["Vitte"],"firstnames":["Eloise"],"suffixes":[]}],"month":"January","year":"2022","note":"arXiv: 2201.07257","keywords":"Astrophysics - Astrophysics of Galaxies, Astrophysics - Cosmology and Nongalactic Astrophysics","bibtex":"@article{kusakabe_muse_2022,\n\ttitle = {The {MUSE} {eXtremely} {Deep} {Field}: {Individual} detections of {Ly}\\{{\\textbackslash}alpha\\} haloes around rest-frame {UV}-selected galaxies at z{\\textasciitilde}2.9-4.4},\n\tshorttitle = {The {MUSE} {eXtremely} {Deep} {Field}},\n\turl = {http://arxiv.org/abs/2201.07257},\n\tabstract = {Hydrogen Ly\\$\\{{\\textbackslash}alpha\\}\\$ haloes (LAHs) are commonly used as a tracer of the circumgalactic medium (CGM) at high redshifts. In this work, we aim to explore the existence of Ly\\$\\{{\\textbackslash}alpha\\}\\$ haloes around individual UV-selected galaxies, rather than around Ly\\$\\{{\\textbackslash}alpha\\}\\$ emitters (LAEs), at high redshifts. Our sample was continuum-selected with F775W{\\textless}=27.5, and spectroscopic redshifts were assigned or constrained for all the sources thanks to the deepest (100- to 140-hour) existing Very Large Telescope (VLT)/Multi-Unit Spectroscopic Explorer (MUSE) data with adaptive optics. The final sample includes 21 galaxies that are purely F775W-magnitude selected within the redshift range z=2.9-4.4 and within a UV magnitude range -20{\\textless}=M1500{\\textless}= -18, thus avoiding any bias toward LAEs. We tested whether galaxy's Ly\\$\\{{\\textbackslash}alpha\\}\\$ emission is significantly more extended than the MUSE PSF-convolved continuum component. We find 17 LAHs and four non-LAHs. We report the first individual detections of extended Ly\\$\\{{\\textbackslash}alpha\\}\\$ emission around non-LAEs. The Ly\\$\\{{\\textbackslash}alpha\\}\\$ halo fraction is thus as high as \\$81.0{\\textasciicircum}\\{+10.3\\}\\_\\{-11.2\\}\\$\\%, which is close to that for LAEs at z=3-6 in the literature. This implies that UV-selected galaxies generally have a large amount of hydrogen in their CGM. We derived the mean surface brightness (SB) profile for our LAHs with cosmic dimming corrections and find that Ly\\$\\{{\\textbackslash}alpha\\}\\$ emission extends to 5.4 arcsec ({\\textasciitilde}40 physical kpc at the midpoint redshift z=3.6) above the typical 1\\$\\{{\\textbackslash}sigma\\}\\$ SB limit. The incidence rate of surrounding gas detected in Ly\\$\\{{\\textbackslash}alpha\\}\\$ per one-dimensional line of sight per unit redshift, dn/dz, is estimated to be \\$0.76{\\textasciicircum}\\{+0.09\\}\\_\\{-0.09\\}\\$ for galaxies with M1500{\\textless}= -18 mag at z{\\textasciitilde}3.7. 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