MUSE analysis of gas around galaxies (MAGG) - III. The gas and galaxy environment of z=3-4.5 quasars
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Standard
MUSE analysis of gas around galaxies (MAGG) - III. The gas and galaxy environment of z=3-4.5 quasars. / Fossati, M.; Fumagalli, M.; Lofthouse, E. K.; Dutta, R.; Cantalupo, S.; Battaia, F. Arrigoni; Fynbo, J. P. U.; Lusso, E.; Murphy, M. T.; Prochaska, J. X.; Theuns, T.; Cooke, R. J.
I: Monthly Notices of the Royal Astronomical Society, Bind 503, Nr. 2, 02.05.2021, s. 3044-3064.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - MUSE analysis of gas around galaxies (MAGG) - III. The gas and galaxy environment of z=3-4.5 quasars
AU - Fossati, M.
AU - Fumagalli, M.
AU - Lofthouse, E. K.
AU - Dutta, R.
AU - Cantalupo, S.
AU - Battaia, F. Arrigoni
AU - Fynbo, J. P. U.
AU - Lusso, E.
AU - Murphy, M. T.
AU - Prochaska, J. X.
AU - Theuns, T.
AU - Cooke, R. J.
PY - 2021/5/2
Y1 - 2021/5/2
N2 - We present a study of the environment of 27 z = 3-4.5 bright quasars from the MUSE Analysis of Gas around Galaxies (MAGG) survey. With medium-depth Multi Unit Spectroscopic Explorer (MUSE) observations (4 h on target per field), we characterize the effects of quasars on their surroundings by studying simultaneously the properties of extended gas nebulae and Ly alpha emitters (LAEs) in the quasar host haloes. We detect extended (up to approximate to 100 kpc) Ly alpha emission around all MAGG quasars, finding a very weak redshift evolution between z = 3 and z = 6. By stacking the MUSE datacubes, we confidently detect extended emission of Civ and only marginally detect extended Heii up to approximate to 40 kpc, implying that the gas is metal enriched. Moreover, our observations show a significant overdensity of LAEs within 300 km s(-1) from the quasar systemic redshifts estimated from the nebular emission. The luminosity functions and equivalent width distributions of these LAEs show similar shapes with respect to LAEs away from quasars suggesting that the Ly alpha emission of the majority of these sources is not significantly boosted by the quasar radiation or other processes related to the quasar environment. Within this framework, the observed LAE overdensities and our kinematic measurements imply that bright quasars at z = 3-4.5 are hosted by haloes in the mass range approximate to 10(12.0)-10(12.5) M-circle dot.
AB - We present a study of the environment of 27 z = 3-4.5 bright quasars from the MUSE Analysis of Gas around Galaxies (MAGG) survey. With medium-depth Multi Unit Spectroscopic Explorer (MUSE) observations (4 h on target per field), we characterize the effects of quasars on their surroundings by studying simultaneously the properties of extended gas nebulae and Ly alpha emitters (LAEs) in the quasar host haloes. We detect extended (up to approximate to 100 kpc) Ly alpha emission around all MAGG quasars, finding a very weak redshift evolution between z = 3 and z = 6. By stacking the MUSE datacubes, we confidently detect extended emission of Civ and only marginally detect extended Heii up to approximate to 40 kpc, implying that the gas is metal enriched. Moreover, our observations show a significant overdensity of LAEs within 300 km s(-1) from the quasar systemic redshifts estimated from the nebular emission. The luminosity functions and equivalent width distributions of these LAEs show similar shapes with respect to LAEs away from quasars suggesting that the Ly alpha emission of the majority of these sources is not significantly boosted by the quasar radiation or other processes related to the quasar environment. Within this framework, the observed LAE overdensities and our kinematic measurements imply that bright quasars at z = 3-4.5 are hosted by haloes in the mass range approximate to 10(12.0)-10(12.5) M-circle dot.
KW - techniques: imaging spectroscopy
KW - galaxies: haloes
KW - galaxies: high-redshift
KW - quasars: emission lines
KW - galaxies: star formation
KW - LY-ALPHA EMISSION
KW - LYMAN BREAK GALAXIES
KW - CIRCUMGALACTIC MEDIUM
KW - HIGH-REDSHIFT
KW - STAR-FORMATION
KW - LUMINOSITY FUNCTION
KW - PHYSICAL-PROPERTIES
KW - MASSIVE GALAXIES
KW - METAL ENRICHMENT
KW - DATA REDUCTION
U2 - 10.1093/mnras/stab660
DO - 10.1093/mnras/stab660
M3 - Journal article
VL - 503
SP - 3044
EP - 3064
JO - Royal Astronomical Society. Monthly Notices
JF - Royal Astronomical Society. Monthly Notices
SN - 0035-8711
IS - 2
ER -
ID: 271821981