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@article{Leung:2019:1538-4357/aaf860,
author = {Leung, TKD and Riechers, DA and Baker, AJ and Clements, DL and Cooray, A and Hayward, CC and Ivison, RJ and Neri, R and Omont, A and Perez-Fournon, I and Scott, D and Wardlow, JL},
doi = {1538-4357/aaf860},
journal = {Astrophysical Journal},
title = {The ISM properties and gas kinematics of a redshift 3 massive dusty star-forming galaxy},
url = {http://dx.doi.org/10.3847/1538-4357/aaf860},
volume = {871},
year = {2019}
}

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TY  - JOUR
AB  - We present CO (J = 1 → 0; 3 → 2; 5 → 4; 10 → 9) and 1.2 kpc resolution [C II] line observations of the dustystar-forming galaxy (SFG) HXMM05—carried out with the Karl G. Jansky Very Large Array, the CombinedArray for Research in Millimeter-wave Astronomy, the Plateau de Bure Interferometer, and the Atacama LargeMillimeter/submillimeter Array, measuring an unambiguous redshift of z = 2.9850 ± 0.0009. We find thatHXMM05 is a hyperluminous infrared galaxy (LIR = (4 ± 1) × 1013 Le) with a total molecular gas mass of(2.1 ± 0.7) × 1011(aCO/0.8) Me. The CO (J = 1 → 0) and [C II] emission are extended over ∼9 kpc in diameter,and the CO line FWHM exceeds 1100 km s−1. The [C II] emission shows a monotonic velocity gradient consistentwith a disk, with a maximum rotation velocity of vc = 616 ± 100 km s−1 and a dynamical mass of(7.7 ± 3.1) × 1011 Me. We find a star formation rate of 2900-+595750 Me yr−1. HXMM05 is thus among the mostintensely SFGs known at high redshift. Photodissociation region modeling suggests physical conditions similar tonearby SFGs, showing extended star formation, which is consistent with our finding that the gas emission and dustemission are cospatial. Its molecular gas excitation resembles the local major merger Arp 220. The broad CO and[C II] lines and a pair of compact dust nuclei suggest the presence of a late-stage major merger at the center of theextended disk, again reminiscent of Arp 220. The observed gas kinematics and conditions, together with thepresence of a companion and the pair of nuclei, suggest that HXMM05 is experiencing multiple mergers as a partof the evolution.
AU  - Leung,TKD
AU  - Riechers,DA
AU  - Baker,AJ
AU  - Clements,DL
AU  - Cooray,A
AU  - Hayward,CC
AU  - Ivison,RJ
AU  - Neri,R
AU  - Omont,A
AU  - Perez-Fournon,I
AU  - Scott,D
AU  - Wardlow,JL
DO  - 1538-4357/aaf860
PY  - 2019///
SN  - 0004-637X
TI  - The ISM properties and gas kinematics of a redshift 3 massive dusty star-forming galaxy
T2  - Astrophysical Journal
UR  - http://dx.doi.org/10.3847/1538-4357/aaf860
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000456837000034&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/71774
VL  - 871
ER  -

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