Modelling high-resolution ALMA observations of strongly lensed dusty star-forming galaxies detected by Herschel

Maresca, Jacob; Dye, Simon; Amvrosiadis, Aristeidis; Bendo, George; Cooray, Asantha; De Zotti, Gianfranco; Dunne, Loretta; Eales, Stephen; Furlanetto, Cristina; González-Nuevo, Joaquin; Greener, Michael; Ivison, Robert; Lapi, Andrea; Negrello, Mattia; Riechers, Dominik; Serjeant, Stephen; Tergolina, Mônica; Wardlow, Julie

doi:10.1093/mnras/stac585

Modelling high-resolution ALMA observations of strongly lensed dusty star-forming galaxies detected by Herschel

Maresca, Jacob; Dye, Simon; Amvrosiadis, Aristeidis; Bendo, George; Cooray, Asantha; De Zotti, Gianfranco; Dunne, Loretta; Eales, Stephen; Furlanetto, Cristina; González-Nuevo, Joaquin; Greener, Michael; Ivison, Robert; Lapi, Andrea; Negrello, Mattia; Riechers, Dominik; Serjeant, Stephen; Tergolina, Mônica; Wardlow, Julie

Authors

Jacob Maresca

Simon Dye

Aristeidis Amvrosiadis aristeidis.amvrosiadis@durham.ac.uk
Post Doctoral Research Associate

George Bendo

Asantha Cooray

Gianfranco De Zotti

Loretta Dunne

Stephen Eales

Cristina Furlanetto

Joaquin González-Nuevo

Michael Greener

Robert Ivison

Andrea Lapi

Mattia Negrello

Dominik Riechers

Stephen Serjeant

Mônica Tergolina

Julie Wardlow

Abstract

We present modelling of ∼0.1 arcsec resolution Atacama Large Millimetre/submillimetre Array imaging of seven strong gravitationally lensed galaxies detected by the Herschel Space Observatory. Four of these systems are galaxy–galaxy strong lenses, with the remaining three being group-scale lenses. Through careful modelling of visibilities, we infer the mass profiles of the lensing galaxies and by determining the magnification factors, we investigate the intrinsic properties and morphologies of the lensed submillimetre sources. We find that these submillimetre sources all have ratios of star formation rate to dust mass that are consistent with, or in excess of, the mean ratio for high-redshift submillimetre galaxies and low redshift ultra-luminous infrared galaxies. Reconstructions of the background sources reveal that the majority of our sample display disturbed morphologies. The majority of our lens models have mass density slopes close to isothermal, but some systems show significant differences.

Citation

Maresca, J., Dye, S., Amvrosiadis, A., Bendo, G., Cooray, A., De Zotti, G., …Wardlow, J. (2022). Modelling high-resolution ALMA observations of strongly lensed dusty star-forming galaxies detected by Herschel. Monthly Notices of the Royal Astronomical Society, 512(2), 2426-2438. https://doi.org/10.1093/mnras/stac585

Journal Article Type	Article
Acceptance Date	Feb 28, 2022
Online Publication Date	Mar 4, 2022
Publication Date	2022-05
Deposit Date	May 27, 2022
Publicly Available Date	May 27, 2022
Journal	Monthly Notices of the Royal Astronomical Society
Print ISSN	0035-8711
Electronic ISSN	1365-2966
Publisher	Royal Astronomical Society
Peer Reviewed	Peer Reviewed
Volume	512
Issue	2
Pages	2426-2438
DOI	https://doi.org/10.1093/mnras/stac585

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Copyright Statement
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2022 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.