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 g alaxy–g alaxy 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.

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. - In: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. - ISSN 0035-8711. - 512:2(2022), pp. 2426-2438. [10.1093/mnras/stac585]

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

De Zotti, Gianfranco;Lapi, Andrea;Negrello, Mattia;
2022-01-01

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 g alaxy–g alaxy 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.
2022
512
2
2426
2438
10.1093/mnras/stac585
https://arxiv.org/abs/2111.09680
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
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/128077
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