ALMA Observations of Gas-Rich Galaxies in z\textasciitilde1.6 Galaxy Clusters: Evidence for Higher Gas Fractions in High-Density Environments

ALMA Observations of Gas-Rich Galaxies in z\textasciitilde1.6 Galaxy Clusters: Evidence for Higher Gas Fractions in High-Density Environments. Noble, A. G., McDonald, M., Muzzin, A., Nantais, J., Rudnick, G., van Kampen, E., Webb, T. M. A., Wilson, G., Yee, H. K. C., Boone, K., Cooper, M. C., DeGroot, A., Delahaye, A., Demarco, R., Foltz, R., Hayden, B., Lidman, C., Manilla-Robles, A., & Perlmutter, S. ArXiv e-prints, 1705:arXiv:1705.03062, May, 2017.
$ALMA Observations of Gas-Rich Galaxies in z\textasciitilde1.6 Galaxy Clusters: Evidence for Higher Gas Fractions in High-Density Environments [link]$ Paper abstract bibtex

We present ALMA CO (2-1) detections in eleven gas-rich cluster galaxies at z\textasciitilde1.6, constituting the largest sample of molecular gas measurements in z\textgreater1 clusters to date. The observations span three galaxy clusters, derived from the Spitzer Adaptation of the Red-sequence Cluster Survey (SpARCS). We augment the \textgreater5\\textbackslashsigma\ detections of the CO (2-1) fluxes with multi-band photometry, yielding stellar masses and infrared-derived star formation rates, to place some of the first constraints on molecular gas properties in z\textasciitilde1.6 cluster environments. We measure sizable gas reservoirs of 0.5-2x10\textasciicircum11 solar masses in these objects, with high gas fractions (f_gas) and long depletion timescales (\\textbackslashtau\), averaging 62% and 1.6 Gyr, respectively. We compare our cluster galaxies to the scaling relations of the coeval field, in the context of how gas fractions and depletion timescales vary with respect to the star-forming main sequence. We find that our cluster galaxies lie systematically off the field scaling relations at z=1.6, at a level of \textasciitilde5\\textbackslashsigma\ (3\\textbackslashsigma\), toward enhanced values of f_gas (\\textbackslashtau\). Exploiting CO detections in lower-redshift clusters from the literature, we investigate the evolution of the gas fraction in cluster galaxies, finding it to mimic the strong rise with redshift in the field. We emphasize the utility of detecting abundant gas-rich galaxies in high-redshift clusters, deeming them as crucial laboratories for future statistical studies.

@article{noble_alma_2017,
	title = {{ALMA} {Observations} of {Gas}-{Rich} {Galaxies} in z{\textasciitilde}1.6 {Galaxy} {Clusters}: {Evidence} for {Higher} {Gas} {Fractions} in {High}-{Density} {Environments}},
	volume = {1705},
	shorttitle = {{ALMA} {Observations} of {Gas}-{Rich} {Galaxies} in z{\textasciitilde}1.6 {Galaxy} {Clusters}},
	url = {http://adsabs.harvard.edu/abs/2017arXiv170503062N},
	abstract = {We present ALMA CO (2-1) detections in eleven gas-rich cluster galaxies 
at z{\textasciitilde}1.6, constituting the largest sample of molecular gas measurements
in z{\textgreater}1 clusters to date. The observations span three galaxy clusters,
derived from the Spitzer Adaptation of the Red-sequence Cluster Survey
(SpARCS). We augment the {\textgreater}5\{{\textbackslash}sigma\} detections of the CO (2-1) fluxes
with multi-band photometry, yielding stellar masses and infrared-derived
star formation rates, to place some of the first constraints on
molecular gas properties in z{\textasciitilde}1.6 cluster environments. We measure
sizable gas reservoirs of 0.5-2x10{\textasciicircum}11 solar masses in these objects,
with high gas fractions (f\_gas) and long depletion timescales (\{{\textbackslash}tau\}),
averaging 62\% and 1.6 Gyr, respectively. We compare our cluster galaxies
to the scaling relations of the coeval field, in the context of how gas
fractions and depletion timescales vary with respect to the star-forming
main sequence. We find that our cluster galaxies lie systematically off
the field scaling relations at z=1.6, at a level of {\textasciitilde}5\{{\textbackslash}sigma\}
(3\{{\textbackslash}sigma\}), toward enhanced values of f\_gas (\{{\textbackslash}tau\}). Exploiting CO
detections in lower-redshift clusters from the literature, we
investigate the evolution of the gas fraction in cluster galaxies,
finding it to mimic the strong rise with redshift in the field. We
emphasize the utility of detecting abundant gas-rich galaxies in
high-redshift clusters, deeming them as crucial laboratories for future
statistical studies.},
	urldate = {2017-05-18},
	journal = {ArXiv e-prints},
	author = {Noble, A. G. and McDonald, M. and Muzzin, A. and Nantais, J. and Rudnick, G. and van Kampen, E. and Webb, T. M. A. and Wilson, G. and Yee, H. K. C. and Boone, K. and Cooper, M. C. and DeGroot, A. and Delahaye, A. and Demarco, R. and Foltz, R. and Hayden, B. and Lidman, C. and Manilla-Robles, A. and Perlmutter, S.},
	month = may,
	year = {2017},
	keywords = {Astrophysics - Astrophysics of Galaxies, Astrophysics - Cosmology and Nongalactic Astrophysics},
	pages = {arXiv:1705.03062},
}

Downloads: 0

{"_id":"NiZd99vAnckKDGHPM","bibbaseid":"noble-mcdonald-muzzin-nantais-rudnick-vankampen-webb-wilson-etal-almaobservationsofgasrichgalaxiesinztextasciitilde16galaxyclustersevidenceforhighergasfractionsinhighdensityenvironments-2017","author_short":["Noble, A. G.","McDonald, M.","Muzzin, A.","Nantais, J.","Rudnick, G.","van Kampen, E.","Webb, T. M. A.","Wilson, G.","Yee, H. K. C.","Boone, K.","Cooper, M. C.","DeGroot, A.","Delahaye, A.","Demarco, R.","Foltz, R.","Hayden, B.","Lidman, C.","Manilla-Robles, A.","Perlmutter, S."],"bibdata":{"bibtype":"article","type":"article","title":"ALMA Observations of Gas-Rich Galaxies in z\\textasciitilde1.6 Galaxy Clusters: Evidence for Higher Gas Fractions in High-Density Environments","volume":"1705","shorttitle":"ALMA Observations of Gas-Rich Galaxies in z\\textasciitilde1.6 Galaxy Clusters","url":"http://adsabs.harvard.edu/abs/2017arXiv170503062N","abstract":"We present ALMA CO (2-1) detections in eleven gas-rich cluster galaxies at z\\textasciitilde1.6, constituting the largest sample of molecular gas measurements in z\\textgreater1 clusters to date. The observations span three galaxy clusters, derived from the Spitzer Adaptation of the Red-sequence Cluster Survey (SpARCS). We augment the \\textgreater5\\\\textbackslashsigma\\ detections of the CO (2-1) fluxes with multi-band photometry, yielding stellar masses and infrared-derived star formation rates, to place some of the first constraints on molecular gas properties in z\\textasciitilde1.6 cluster environments. We measure sizable gas reservoirs of 0.5-2x10\\textasciicircum11 solar masses in these objects, with high gas fractions (f_gas) and long depletion timescales (\\\\textbackslashtau\\), averaging 62% and 1.6 Gyr, respectively. We compare our cluster galaxies to the scaling relations of the coeval field, in the context of how gas fractions and depletion timescales vary with respect to the star-forming main sequence. We find that our cluster galaxies lie systematically off the field scaling relations at z=1.6, at a level of \\textasciitilde5\\\\textbackslashsigma\\ (3\\\\textbackslashsigma\\), toward enhanced values of f_gas (\\\\textbackslashtau\\). Exploiting CO detections in lower-redshift clusters from the literature, we investigate the evolution of the gas fraction in cluster galaxies, finding it to mimic the strong rise with redshift in the field. We emphasize the utility of detecting abundant gas-rich galaxies in high-redshift clusters, deeming them as crucial laboratories for future statistical studies.","urldate":"2017-05-18","journal":"ArXiv e-prints","author":[{"propositions":[],"lastnames":["Noble"],"firstnames":["A.","G."],"suffixes":[]},{"propositions":[],"lastnames":["McDonald"],"firstnames":["M."],"suffixes":[]},{"propositions":[],"lastnames":["Muzzin"],"firstnames":["A."],"suffixes":[]},{"propositions":[],"lastnames":["Nantais"],"firstnames":["J."],"suffixes":[]},{"propositions":[],"lastnames":["Rudnick"],"firstnames":["G."],"suffixes":[]},{"propositions":["van"],"lastnames":["Kampen"],"firstnames":["E."],"suffixes":[]},{"propositions":[],"lastnames":["Webb"],"firstnames":["T.","M.","A."],"suffixes":[]},{"propositions":[],"lastnames":["Wilson"],"firstnames":["G."],"suffixes":[]},{"propositions":[],"lastnames":["Yee"],"firstnames":["H.","K.","C."],"suffixes":[]},{"propositions":[],"lastnames":["Boone"],"firstnames":["K."],"suffixes":[]},{"propositions":[],"lastnames":["Cooper"],"firstnames":["M.","C."],"suffixes":[]},{"propositions":[],"lastnames":["DeGroot"],"firstnames":["A."],"suffixes":[]},{"propositions":[],"lastnames":["Delahaye"],"firstnames":["A."],"suffixes":[]},{"propositions":[],"lastnames":["Demarco"],"firstnames":["R."],"suffixes":[]},{"propositions":[],"lastnames":["Foltz"],"firstnames":["R."],"suffixes":[]},{"propositions":[],"lastnames":["Hayden"],"firstnames":["B."],"suffixes":[]},{"propositions":[],"lastnames":["Lidman"],"firstnames":["C."],"suffixes":[]},{"propositions":[],"lastnames":["Manilla-Robles"],"firstnames":["A."],"suffixes":[]},{"propositions":[],"lastnames":["Perlmutter"],"firstnames":["S."],"suffixes":[]}],"month":"May","year":"2017","keywords":"Astrophysics - Astrophysics of Galaxies, Astrophysics - Cosmology and Nongalactic Astrophysics","pages":"arXiv:1705.03062","bibtex":"@article{noble_alma_2017,\n\ttitle = {{ALMA} {Observations} of {Gas}-{Rich} {Galaxies} in z{\\textasciitilde}1.6 {Galaxy} {Clusters}: {Evidence} for {Higher} {Gas} {Fractions} in {High}-{Density} {Environments}},\n\tvolume = {1705},\n\tshorttitle = {{ALMA} {Observations} of {Gas}-{Rich} {Galaxies} in z{\\textasciitilde}1.6 {Galaxy} {Clusters}},\n\turl = {http://adsabs.harvard.edu/abs/2017arXiv170503062N},\n\tabstract = {We present ALMA CO (2-1) detections in eleven gas-rich cluster galaxies \nat z{\\textasciitilde}1.6, constituting the largest sample of molecular gas measurements\nin z{\\textgreater}1 clusters to date. The observations span three galaxy clusters,\nderived from the Spitzer Adaptation of the Red-sequence Cluster Survey\n(SpARCS). We augment the {\\textgreater}5\\{{\\textbackslash}sigma\\} detections of the CO (2-1) fluxes\nwith multi-band photometry, yielding stellar masses and infrared-derived\nstar formation rates, to place some of the first constraints on\nmolecular gas properties in z{\\textasciitilde}1.6 cluster environments. We measure\nsizable gas reservoirs of 0.5-2x10{\\textasciicircum}11 solar masses in these objects,\nwith high gas fractions (f\\_gas) and long depletion timescales (\\{{\\textbackslash}tau\\}),\naveraging 62\\% and 1.6 Gyr, respectively. We compare our cluster galaxies\nto the scaling relations of the coeval field, in the context of how gas\nfractions and depletion timescales vary with respect to the star-forming\nmain sequence. We find that our cluster galaxies lie systematically off\nthe field scaling relations at z=1.6, at a level of {\\textasciitilde}5\\{{\\textbackslash}sigma\\}\n(3\\{{\\textbackslash}sigma\\}), toward enhanced values of f\\_gas (\\{{\\textbackslash}tau\\}). Exploiting CO\ndetections in lower-redshift clusters from the literature, we\ninvestigate the evolution of the gas fraction in cluster galaxies,\nfinding it to mimic the strong rise with redshift in the field. We\nemphasize the utility of detecting abundant gas-rich galaxies in\nhigh-redshift clusters, deeming them as crucial laboratories for future\nstatistical studies.},\n\turldate = {2017-05-18},\n\tjournal = {ArXiv e-prints},\n\tauthor = {Noble, A. G. and McDonald, M. and Muzzin, A. and Nantais, J. and Rudnick, G. and van Kampen, E. and Webb, T. M. A. and Wilson, G. and Yee, H. K. C. and Boone, K. and Cooper, M. C. and DeGroot, A. and Delahaye, A. and Demarco, R. and Foltz, R. and Hayden, B. and Lidman, C. and Manilla-Robles, A. and Perlmutter, S.},\n\tmonth = may,\n\tyear = {2017},\n\tkeywords = {Astrophysics - Astrophysics of Galaxies, Astrophysics - Cosmology and Nongalactic Astrophysics},\n\tpages = {arXiv:1705.03062},\n}\n\n","author_short":["Noble, A. G.","McDonald, M.","Muzzin, A.","Nantais, J.","Rudnick, G.","van Kampen, E.","Webb, T. M. A.","Wilson, G.","Yee, H. K. C.","Boone, K.","Cooper, M. C.","DeGroot, A.","Delahaye, A.","Demarco, R.","Foltz, R.","Hayden, B.","Lidman, C.","Manilla-Robles, A.","Perlmutter, S."],"key":"noble_alma_2017","id":"noble_alma_2017","bibbaseid":"noble-mcdonald-muzzin-nantais-rudnick-vankampen-webb-wilson-etal-almaobservationsofgasrichgalaxiesinztextasciitilde16galaxyclustersevidenceforhighergasfractionsinhighdensityenvironments-2017","role":"author","urls":{"Paper":"http://adsabs.harvard.edu/abs/2017arXiv170503062N"},"keyword":["Astrophysics - Astrophysics of Galaxies","Astrophysics - Cosmology and Nongalactic Astrophysics"],"metadata":{"authorlinks":{}}},"bibtype":"article","biburl":"https://bibbase.org/zotero/polyphant","dataSources":["7gvjSdWrEu7z5vjjj"],"keywords":["astrophysics - astrophysics of galaxies","astrophysics - cosmology and nongalactic astrophysics"],"search_terms":["alma","observations","gas","rich","galaxies","textasciitilde1","galaxy","clusters","evidence","higher","gas","fractions","high","density","environments","noble","mcdonald","muzzin","nantais","rudnick","van kampen","webb","wilson","yee","boone","cooper","degroot","delahaye","demarco","foltz","hayden","lidman","manilla-robles","perlmutter"],"title":"ALMA Observations of Gas-Rich Galaxies in z\\textasciitilde1.6 Galaxy Clusters: Evidence for Higher Gas Fractions in High-Density Environments","year":2017}