Modelling high resolution ALMA observations of strongly lensed highly star forming galaxies detected by Herschel
We have modelled ∼0.1 arcsec resolution ALMA imaging of six strong gravitationally lensed galaxies detected by the Herschel Space Observatory. Our modelling recovers mass properties of the lensing galaxies and, by determining magnification factors, intrinsic properties of the lensed sub-millimetre s...
| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Oxford University Press
2018
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| Online Access: | https://eprints.nottingham.ac.uk/50296/ |
| _version_ | 1848798212633133056 |
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| author | Dye, S. Furlanetto, C. Dunne, L. Eales, S.A. Negrello, M. Nayyeri, H. van der Werf, P.P. Serjeant, S. Farrah, D. Michałowski, M.J. Baes, M. Marchetti, L. Cooray, A. Riechers, D.A. Amvrosiadis, A. |
| author_facet | Dye, S. Furlanetto, C. Dunne, L. Eales, S.A. Negrello, M. Nayyeri, H. van der Werf, P.P. Serjeant, S. Farrah, D. Michałowski, M.J. Baes, M. Marchetti, L. Cooray, A. Riechers, D.A. Amvrosiadis, A. |
| author_sort | Dye, S. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | We have modelled ∼0.1 arcsec resolution ALMA imaging of six strong gravitationally lensed galaxies detected by the Herschel Space Observatory. Our modelling recovers mass properties of the lensing galaxies and, by determining magnification factors, intrinsic properties of the lensed sub-millimetre sources. We find that the lensed galaxies all have high ratios of star formation rate to dust mass, consistent with or higher than the mean ratio for high redshift sub-millimetre galaxies and low redshift ultra-luminous infra-red galaxies. Source reconstruction reveals that most galaxies exhibit disturbed morphologies. Both the cleaned image plane data and the directly observed interferometric visibilities have been modelled, enabling comparison of both approaches. In the majority of cases, the recovered lens models are consistent between methods, all six having mass density profiles that are close to isothermal. However, one system with poor signal to noise shows mildly significant differences. |
| first_indexed | 2025-11-14T20:16:11Z |
| format | Article |
| id | nottingham-50296 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T20:16:11Z |
| publishDate | 2018 |
| publisher | Oxford University Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-502962018-03-07T15:16:14Z https://eprints.nottingham.ac.uk/50296/ Modelling high resolution ALMA observations of strongly lensed highly star forming galaxies detected by Herschel Dye, S. Furlanetto, C. Dunne, L. Eales, S.A. Negrello, M. Nayyeri, H. van der Werf, P.P. Serjeant, S. Farrah, D. Michałowski, M.J. Baes, M. Marchetti, L. Cooray, A. Riechers, D.A. Amvrosiadis, A. We have modelled ∼0.1 arcsec resolution ALMA imaging of six strong gravitationally lensed galaxies detected by the Herschel Space Observatory. Our modelling recovers mass properties of the lensing galaxies and, by determining magnification factors, intrinsic properties of the lensed sub-millimetre sources. We find that the lensed galaxies all have high ratios of star formation rate to dust mass, consistent with or higher than the mean ratio for high redshift sub-millimetre galaxies and low redshift ultra-luminous infra-red galaxies. Source reconstruction reveals that most galaxies exhibit disturbed morphologies. Both the cleaned image plane data and the directly observed interferometric visibilities have been modelled, enabling comparison of both approaches. In the majority of cases, the recovered lens models are consistent between methods, all six having mass density profiles that are close to isothermal. However, one system with poor signal to noise shows mildly significant differences. Oxford University Press 2018-02-24 Article PeerReviewed application/pdf en https://eprints.nottingham.ac.uk/50296/1/temp%20%28002%29Dye.pdf Dye, S., Furlanetto, C., Dunne, L., Eales, S.A., Negrello, M., Nayyeri, H., van der Werf, P.P., Serjeant, S., Farrah, D., Michałowski, M.J., Baes, M., Marchetti, L., Cooray, A., Riechers, D.A. and Amvrosiadis, A. (2018) Modelling high resolution ALMA observations of strongly lensed highly star forming galaxies detected by Herschel. Monthly Notices of the Royal Astronomical Society . ISSN 1365-2966 https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/sty513/4907987 doi:10.1093/mnras/sty513 doi:10.1093/mnras/sty513 |
| spellingShingle | Dye, S. Furlanetto, C. Dunne, L. Eales, S.A. Negrello, M. Nayyeri, H. van der Werf, P.P. Serjeant, S. Farrah, D. Michałowski, M.J. Baes, M. Marchetti, L. Cooray, A. Riechers, D.A. Amvrosiadis, A. Modelling high resolution ALMA observations of strongly lensed highly star forming galaxies detected by Herschel |
| title | Modelling high resolution ALMA observations of strongly lensed highly star forming galaxies detected by Herschel |
| title_full | Modelling high resolution ALMA observations of strongly lensed highly star forming galaxies detected by Herschel |
| title_fullStr | Modelling high resolution ALMA observations of strongly lensed highly star forming galaxies detected by Herschel |
| title_full_unstemmed | Modelling high resolution ALMA observations of strongly lensed highly star forming galaxies detected by Herschel |
| title_short | Modelling high resolution ALMA observations of strongly lensed highly star forming galaxies detected by Herschel |
| title_sort | modelling high resolution alma observations of strongly lensed highly star forming galaxies detected by herschel |
| url | https://eprints.nottingham.ac.uk/50296/ https://eprints.nottingham.ac.uk/50296/ https://eprints.nottingham.ac.uk/50296/ |