Imperial College London
Portrait Picture

Dr Clements

Faculty of Natural Sciences, Department of Physics

Reader in Astrophysics
 
 
 
//

Contact

 

+44 (0)20 7594 7693d.clements

 
 
//

Location

 

1011Blackett LaboratorySouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@article{Riechers:2021:1538-4357/abcf2e,
author = {Riechers, DA and Nayyeri, H and Burgarella, D and Emonts, BHC and Clements, DL and Cooray, A and Ivison, RJ and Oliver, S and Perez-Fournon, I and Rigopoulou, D and Scott, D},
doi = {1538-4357/abcf2e},
journal = {Astrophysical Journal Supplement Series},
pages = {1--18},
title = {Rise of the titans: gas excitation and feedback in a binary  hyper-luminous dusty starburst galaxy at z~6},
url = {http://dx.doi.org/10.3847/1538-4357/abcf2e},
volume = {907},
year = {2021}
}
Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - We report new observations toward the hyper-luminous dusty starbursting majormerger ADFS-27 (z=5.655), using ATCA and ALMA. We detect CO 2-1, 8-7, 9-8, 10-9and H2O(321-221) emission, and a P-Cygni-shaped OH+(11-01) absorption/emissionfeature. We also tentatively detect H2O(321-312) and OH+(12-01) emission andCH+(1-0) absorption. We find a total cold molecular mass of M_gas = (2.1+/-0.2)x 10^11 (alpha_CO/1.0) Msun. We also find that the excitation of thestar-forming gas is overall moderate for a z>5 dusty starburst, which isconsistent with its moderate dust temperature. A high density, high kinetictemperature gas component embedded in the gas reservoir is required to fullyexplain the CO line ladder. This component is likely associated with the"maximum starburst" nuclei in the two merging galaxies, which are separated byonly (140+/-13) km/s along the line of sight and 9.0 kpc in projection. Thekinematic structure of both components is consistent with galaxy disks, butthis interpretation remains limited by the spatial resolution of the currentdata. The OH+ features are only detected towards the northern component, whichis also the one that is more enshrouded in dust and thus remains undetected upto 1.6 um even in our sensitive new HST/WFC3 imaging. The absorption componentof the OH+ line is blueshifted and peaks near the CO and continuum emissionpeak while the emission is redshifted and peaks offset by 1.7 kpc from the COand continuum emission peak, suggesting that the gas is associated with amassive molecular outflow from the intensely star-forming nucleus that supplies125 Msun/yr of enriched gas to its halo.
AU  - Riechers,DA
AU  - Nayyeri,H
AU  - Burgarella,D
AU  - Emonts,BHC
AU  - Clements,DL
AU  - Cooray,A
AU  - Ivison,RJ
AU  - Oliver,S
AU  - Perez-Fournon,I
AU  - Rigopoulou,D
AU  - Scott,D
DO  - 1538-4357/abcf2e
EP  - 18
PY  - 2021///
SN  - 0067-0049
SP  - 1
TI  - Rise of the titans: gas excitation and feedback in a binary  hyper-luminous dusty starburst galaxy at z~6
T2  - Astrophysical Journal Supplement Series
UR  - http://dx.doi.org/10.3847/1538-4357/abcf2e
UR  - http://arxiv.org/abs/2010.15183v1
UR  - https://iopscience.iop.org/article/10.3847/1538-4357/abcf2e
UR  - http://hdl.handle.net/10044/1/84020
VL  - 907
ER  -
Download