The Ly alpha, C iv, and He ii nebulae around J1000+0234: a galaxy pair at the centre of a galaxy overdensity at z=4.5
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The Ly alpha, C iv, and He ii nebulae around J1000+0234 : a galaxy pair at the centre of a galaxy overdensity at z=4.5. / Jimenez-Andrade, E. F.; Cantalupo, S.; Magnelli, B.; Romano-Diaz, E.; Gomez-Guijarro, C.; Mackenzie, R.; Smolcic, V.; Murphy, E.; Matthee, J.; Toft, S.
I: Monthly Notices of the Royal Astronomical Society, Bind 521, Nr. 2, 14.03.2023, s. 2326-2341.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - The Ly alpha, C iv, and He ii nebulae around J1000+0234
T2 - a galaxy pair at the centre of a galaxy overdensity at z=4.5
AU - Jimenez-Andrade, E. F.
AU - Cantalupo, S.
AU - Magnelli, B.
AU - Romano-Diaz, E.
AU - Gomez-Guijarro, C.
AU - Mackenzie, R.
AU - Smolcic, V.
AU - Murphy, E.
AU - Matthee, J.
AU - Toft, S.
PY - 2023/3/14
Y1 - 2023/3/14
N2 - L y alpha A.1216 (L y alpha) emission extending over > 10 kilo parsec (kpc) around dusty, massive starbursts at z > 3 might represent a short-lived phase in the evolution of present-day, massive quiescent galaxies. To obtain empirical constraints on this emerging scenario, we present Ly alpha, C IV A.1550 (C IV ), and He II A.1640 (He II ) observations taken with the Multi-Unit Spectroscopic Explorer towards J1000 + 0234: a galaxy pair at z = 4.5 composed of a low-mass starburst (J1000 +0234-South) neighbouring a massive Submillimeter Galaxy (SMG; J1000 + 0234 -North) that harbours a rotationally supported gas disc. Based on the spatial distribution and relative strength of Ly alpha, C IV , and He II , we find that star formation in J1000 + 0234 -South and an active galactic nucleus in J1000 + 0234 -North are dominant factors in driving the observed 40 kiloparsec-scale Ly alpha blob (LAB). We use the non-resonant He II line to infer kinematic information of the LAB. We find marginal evidence for two spatially and spectrally separated He II regions, which suggests that the tw o-peak ed Ly alpha profile is mainly a result of two o v erlapping and likely interacting H I clouds. We also report the serendipitous identification of three Ly alpha emitters spanning over a redshift bin delta z
AB - L y alpha A.1216 (L y alpha) emission extending over > 10 kilo parsec (kpc) around dusty, massive starbursts at z > 3 might represent a short-lived phase in the evolution of present-day, massive quiescent galaxies. To obtain empirical constraints on this emerging scenario, we present Ly alpha, C IV A.1550 (C IV ), and He II A.1640 (He II ) observations taken with the Multi-Unit Spectroscopic Explorer towards J1000 + 0234: a galaxy pair at z = 4.5 composed of a low-mass starburst (J1000 +0234-South) neighbouring a massive Submillimeter Galaxy (SMG; J1000 + 0234 -North) that harbours a rotationally supported gas disc. Based on the spatial distribution and relative strength of Ly alpha, C IV , and He II , we find that star formation in J1000 + 0234 -South and an active galactic nucleus in J1000 + 0234 -North are dominant factors in driving the observed 40 kiloparsec-scale Ly alpha blob (LAB). We use the non-resonant He II line to infer kinematic information of the LAB. We find marginal evidence for two spatially and spectrally separated He II regions, which suggests that the tw o-peak ed Ly alpha profile is mainly a result of two o v erlapping and likely interacting H I clouds. We also report the serendipitous identification of three Ly alpha emitters spanning over a redshift bin delta z
KW - galaxies: evolution
KW - galaxies: high
KW - redshift
KW - galaxies:individual:J1000+0234
KW - galaxies:intergalacticmedium
KW - STAR-FORMING GALAXIES
KW - REDSHIFT RADIO GALAXIES
KW - ACTIVE GALACTIC NUCLEI
KW - GHZ LARGE PROJECT
KW - SIMILAR-TO 10
KW - SUBMILLIMETER GALAXIES
KW - CONTINUUM EMISSION
KW - ALMA OBSERVATIONS
KW - LINE-PROFILE
KW - BLACK-HOLES
U2 - 10.1093/mnras/stad594
DO - 10.1093/mnras/stad594
M3 - Journal article
VL - 521
SP - 2326
EP - 2341
JO - Royal Astronomical Society. Monthly Notices
JF - Royal Astronomical Society. Monthly Notices
SN - 0035-8711
IS - 2
ER -
ID: 345314861