Herschel-ATLAS and ALMA: HATLAS J142935.3-002836, a lensed major merger at redshift 1.027
Context. The submillimetre-bright galaxy population is believed to comprise, aside from local galaxies and radio-loud sources, intrinsically active star-forming galaxies, the brightest of which are lensed gravitationally. The latter enable studies at a level of detail beyond what is usually possible...
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| Format: | Article |
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EDP Sciences
2014
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| Online Access: | https://eprints.nottingham.ac.uk/42451/ |
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| author | Messias, Hugo Dye, S. Nagar, Neil Orellana, Gustavo Shane Bussmann, R. Calanog, Jae Dannerbauer, Helmut Fu, Hai Ibar, Edo Inohara, Andrew Ivison, R.J. Negrello, Mattia Riechers, Dominik A. Sheen, Yun-Kyeong Aguirre, James E. Amber, Simon Birkinshaw, Mark Bourne, Nathan Bradford, Charles M. Clements, Dave L. Cooray, Asantha De Zotti, Gianfranco Demarco, Ricardo Dunne, Loretta Eales, Stephen Fleuren, Simone Kamenetzky, Julia Lupu, Roxana E. Maddox, Steve J. Marrone, Daniel P. Michałowski, Michał J. Murphy, Eric J. Nguyen, Hien T. Omont, Alain Rowlands, Kate Smith, Dan Smith, Matt Valiante, Elisabetta Vieira, Joaquin D. |
| author_facet | Messias, Hugo Dye, S. Nagar, Neil Orellana, Gustavo Shane Bussmann, R. Calanog, Jae Dannerbauer, Helmut Fu, Hai Ibar, Edo Inohara, Andrew Ivison, R.J. Negrello, Mattia Riechers, Dominik A. Sheen, Yun-Kyeong Aguirre, James E. Amber, Simon Birkinshaw, Mark Bourne, Nathan Bradford, Charles M. Clements, Dave L. Cooray, Asantha De Zotti, Gianfranco Demarco, Ricardo Dunne, Loretta Eales, Stephen Fleuren, Simone Kamenetzky, Julia Lupu, Roxana E. Maddox, Steve J. Marrone, Daniel P. Michałowski, Michał J. Murphy, Eric J. Nguyen, Hien T. Omont, Alain Rowlands, Kate Smith, Dan Smith, Matt Valiante, Elisabetta Vieira, Joaquin D. |
| author_sort | Messias, Hugo |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Context. The submillimetre-bright galaxy population is believed to comprise, aside from local galaxies and radio-loud sources, intrinsically active star-forming galaxies, the brightest of which are lensed gravitationally. The latter enable studies at a level of detail beyond what is usually possible by the observation facility.
Aims. This work focuses on one of these lensed systems, HATLAS J142935.3−002836 (H1429−0028), selected in the Herschel-ATLAS field. Gathering a rich, multi-wavelength dataset, we aim to confirm the lensing hypothesis and model the background source’s morphology and dynamics, as well as to provide a full physical characterisation.
Methods. Multi-wavelength high-resolution data is utilised to assess the nature of the system. A lensing-analysis algorithm that simultaneously fits different wavebands is adopted to characterise the lens. The background galaxy dynamical information is studied by reconstructing the 3D source plane of the ALMA CO (J:4 → 3) transition. Near-IR imaging from HST and Keck-AO allows to constrain rest-frame optical photometry independently for the foreground and background systems. Physical parameters (such as stellar and dust masses) are estimated via modelling of the spectral energy distribution taking source blending, foreground obscuration, and differential magnification into account.
Results. The system comprises a foreground edge-on disk galaxy (at zsp = 0.218) with an almost complete Einstein ring around it. The background source (at zsp = 1.027) is magnified by a factor of μ ~ 8−10 depending on wavelength. It is comprised of two components and a tens-of-kpc-long tidal tail resembling the Antennæ merger. As a whole, the background source is a massive stellar system (1.32-0.41+ 0.63 × 1011 M⊙) forming stars at a rate of 394 ± 90 M⊙ yr-1, and it has a significant gas reservoir MISM = 4.6 ± 1.7 × 1010 M⊙. Its depletion time due to star formation alone is thus expected to be τSF = MISM/ SFR = 117 ± 51 Myr. The dynamical mass of one of the components is estimated to be 5.8 ± 1.7 × 1010 M⊙, and, together with the photometric total mass estimate, it implies that H1429−0028 is a major merger system (1:2.8-1.5+1.8). |
| first_indexed | 2025-11-14T19:48:49Z |
| format | Article |
| id | nottingham-42451 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:48:49Z |
| publishDate | 2014 |
| publisher | EDP Sciences |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-424512020-05-04T16:52:03Z https://eprints.nottingham.ac.uk/42451/ Herschel-ATLAS and ALMA: HATLAS J142935.3-002836, a lensed major merger at redshift 1.027 Messias, Hugo Dye, S. Nagar, Neil Orellana, Gustavo Shane Bussmann, R. Calanog, Jae Dannerbauer, Helmut Fu, Hai Ibar, Edo Inohara, Andrew Ivison, R.J. Negrello, Mattia Riechers, Dominik A. Sheen, Yun-Kyeong Aguirre, James E. Amber, Simon Birkinshaw, Mark Bourne, Nathan Bradford, Charles M. Clements, Dave L. Cooray, Asantha De Zotti, Gianfranco Demarco, Ricardo Dunne, Loretta Eales, Stephen Fleuren, Simone Kamenetzky, Julia Lupu, Roxana E. Maddox, Steve J. Marrone, Daniel P. Michałowski, Michał J. Murphy, Eric J. Nguyen, Hien T. Omont, Alain Rowlands, Kate Smith, Dan Smith, Matt Valiante, Elisabetta Vieira, Joaquin D. Context. The submillimetre-bright galaxy population is believed to comprise, aside from local galaxies and radio-loud sources, intrinsically active star-forming galaxies, the brightest of which are lensed gravitationally. The latter enable studies at a level of detail beyond what is usually possible by the observation facility. Aims. This work focuses on one of these lensed systems, HATLAS J142935.3−002836 (H1429−0028), selected in the Herschel-ATLAS field. Gathering a rich, multi-wavelength dataset, we aim to confirm the lensing hypothesis and model the background source’s morphology and dynamics, as well as to provide a full physical characterisation. Methods. Multi-wavelength high-resolution data is utilised to assess the nature of the system. A lensing-analysis algorithm that simultaneously fits different wavebands is adopted to characterise the lens. The background galaxy dynamical information is studied by reconstructing the 3D source plane of the ALMA CO (J:4 → 3) transition. Near-IR imaging from HST and Keck-AO allows to constrain rest-frame optical photometry independently for the foreground and background systems. Physical parameters (such as stellar and dust masses) are estimated via modelling of the spectral energy distribution taking source blending, foreground obscuration, and differential magnification into account. Results. The system comprises a foreground edge-on disk galaxy (at zsp = 0.218) with an almost complete Einstein ring around it. The background source (at zsp = 1.027) is magnified by a factor of μ ~ 8−10 depending on wavelength. It is comprised of two components and a tens-of-kpc-long tidal tail resembling the Antennæ merger. As a whole, the background source is a massive stellar system (1.32-0.41+ 0.63 × 1011 M⊙) forming stars at a rate of 394 ± 90 M⊙ yr-1, and it has a significant gas reservoir MISM = 4.6 ± 1.7 × 1010 M⊙. Its depletion time due to star formation alone is thus expected to be τSF = MISM/ SFR = 117 ± 51 Myr. The dynamical mass of one of the components is estimated to be 5.8 ± 1.7 × 1010 M⊙, and, together with the photometric total mass estimate, it implies that H1429−0028 is a major merger system (1:2.8-1.5+1.8). EDP Sciences 2014-08-26 Article PeerReviewed Messias, Hugo, Dye, S., Nagar, Neil, Orellana, Gustavo, Shane Bussmann, R., Calanog, Jae, Dannerbauer, Helmut, Fu, Hai, Ibar, Edo, Inohara, Andrew, Ivison, R.J., Negrello, Mattia, Riechers, Dominik A., Sheen, Yun-Kyeong, Aguirre, James E., Amber, Simon, Birkinshaw, Mark, Bourne, Nathan, Bradford, Charles M., Clements, Dave L., Cooray, Asantha, De Zotti, Gianfranco, Demarco, Ricardo, Dunne, Loretta, Eales, Stephen, Fleuren, Simone, Kamenetzky, Julia, Lupu, Roxana E., Maddox, Steve J., Marrone, Daniel P., Michałowski, Michał J., Murphy, Eric J., Nguyen, Hien T., Omont, Alain, Rowlands, Kate, Smith, Dan, Smith, Matt, Valiante, Elisabetta and Vieira, Joaquin D. (2014) Herschel-ATLAS and ALMA: HATLAS J142935.3-002836, a lensed major merger at redshift 1.027. Astronomy & Astrophysics, 568 . A92/1-A92/20. ISSN 1432-0746 gravitational lensing: strong; galaxies: ISM; galaxies: kinematics and dynamics http://www.aanda.org/articles/aa/abs/2014/08/aa24410-14/aa24410-14.html doi:10.1051/0004-6361/201424410 doi:10.1051/0004-6361/201424410 |
| spellingShingle | gravitational lensing: strong; galaxies: ISM; galaxies: kinematics and dynamics Messias, Hugo Dye, S. Nagar, Neil Orellana, Gustavo Shane Bussmann, R. Calanog, Jae Dannerbauer, Helmut Fu, Hai Ibar, Edo Inohara, Andrew Ivison, R.J. Negrello, Mattia Riechers, Dominik A. Sheen, Yun-Kyeong Aguirre, James E. Amber, Simon Birkinshaw, Mark Bourne, Nathan Bradford, Charles M. Clements, Dave L. Cooray, Asantha De Zotti, Gianfranco Demarco, Ricardo Dunne, Loretta Eales, Stephen Fleuren, Simone Kamenetzky, Julia Lupu, Roxana E. Maddox, Steve J. Marrone, Daniel P. Michałowski, Michał J. Murphy, Eric J. Nguyen, Hien T. Omont, Alain Rowlands, Kate Smith, Dan Smith, Matt Valiante, Elisabetta Vieira, Joaquin D. Herschel-ATLAS and ALMA: HATLAS J142935.3-002836, a lensed major merger at redshift 1.027 |
| title | Herschel-ATLAS and ALMA: HATLAS J142935.3-002836, a lensed major merger at redshift 1.027 |
| title_full | Herschel-ATLAS and ALMA: HATLAS J142935.3-002836, a lensed major merger at redshift 1.027 |
| title_fullStr | Herschel-ATLAS and ALMA: HATLAS J142935.3-002836, a lensed major merger at redshift 1.027 |
| title_full_unstemmed | Herschel-ATLAS and ALMA: HATLAS J142935.3-002836, a lensed major merger at redshift 1.027 |
| title_short | Herschel-ATLAS and ALMA: HATLAS J142935.3-002836, a lensed major merger at redshift 1.027 |
| title_sort | herschel-atlas and alma: hatlas j142935.3-002836, a lensed major merger at redshift 1.027 |
| topic | gravitational lensing: strong; galaxies: ISM; galaxies: kinematics and dynamics |
| url | https://eprints.nottingham.ac.uk/42451/ https://eprints.nottingham.ac.uk/42451/ https://eprints.nottingham.ac.uk/42451/ |