Caught in the act - massive cluster formation at z=3-7 witnessed by APEX/ALMA
Finding and tracing the progenitors of today's massive clusters is challenging but observations of these rare systems are rich in information on cluster assembly, including brightest cluster galaxy formation, the build up of the red sequence and intra-cluster light, heating and metal-enrichment...
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ftdatacite:10.5281/zenodo.3585172 2023-05-15T18:22:58+02:00 Caught in the act - massive cluster formation at z=3-7 witnessed by APEX/ALMA Weiss, Axel 2019 https://dx.doi.org/10.5281/zenodo.3585172 https://zenodo.org/record/3585172 unknown Zenodo https://zenodo.org/communities/alma2019caligari https://dx.doi.org/10.5281/zenodo.3585171 https://zenodo.org/communities/alma2019caligari Open Access Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 info:eu-repo/semantics/openAccess CC-BY Text Presentation article-journal ScholarlyArticle 2019 ftdatacite https://doi.org/10.5281/zenodo.3585172 https://doi.org/10.5281/zenodo.3585171 2021-11-05T12:55:41Z Finding and tracing the progenitors of today's massive clusters is challenging but observations of these rare systems are rich in information on cluster assembly, including brightest cluster galaxy formation, the build up of the red sequence and intra-cluster light, heating and metal-enrichment in the forming intra-cluster medium, the triggering and quenching of both star-formation and of active galactic nuclei, and the in-fall of matter along filaments of the cosmic web. In a multi-band survey over 2500 deg2, the South Pole Telescope discovered a population of rare, extremely bright (S1.4 mm > 20 mJy) millimetre-selected sources. Our ALMA 870μm imaging showed that ∼ 90% of these sources are gravitationally lensed DSFGs at z ∼ 4. However, ∼ 10% of the SPT sources show no evidence for lensing but break-up into individual galaxies with ALMA and thus show all expected properties of the most active phase of early cluster formation predicted by cosmological simulations. The most spectacular example for this process identified in the SPT survey so far is SPT2349-56 at z = 4.3. This source is spatially well resolved at 870μm even with LABOCA/APEX and breaks up into 30 proto-cluster members with confirmed redshifts from ALMA. The entire system as a stunning SFR of 16500 M⊙ yr−1 and contains 15 (U)LIRGs at its core within a projected radius equal to the MW-LMC distance! In this talk I will present the latest result of our coordinated attempt to characterise all porto-cluster candidates discovered in the SPT survey. Conference Object South pole DataCite Metadata Store (German National Library of Science and Technology) South Pole |
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Finding and tracing the progenitors of today's massive clusters is challenging but observations of these rare systems are rich in information on cluster assembly, including brightest cluster galaxy formation, the build up of the red sequence and intra-cluster light, heating and metal-enrichment in the forming intra-cluster medium, the triggering and quenching of both star-formation and of active galactic nuclei, and the in-fall of matter along filaments of the cosmic web. In a multi-band survey over 2500 deg2, the South Pole Telescope discovered a population of rare, extremely bright (S1.4 mm > 20 mJy) millimetre-selected sources. Our ALMA 870μm imaging showed that ∼ 90% of these sources are gravitationally lensed DSFGs at z ∼ 4. However, ∼ 10% of the SPT sources show no evidence for lensing but break-up into individual galaxies with ALMA and thus show all expected properties of the most active phase of early cluster formation predicted by cosmological simulations. The most spectacular example for this process identified in the SPT survey so far is SPT2349-56 at z = 4.3. This source is spatially well resolved at 870μm even with LABOCA/APEX and breaks up into 30 proto-cluster members with confirmed redshifts from ALMA. The entire system as a stunning SFR of 16500 M⊙ yr−1 and contains 15 (U)LIRGs at its core within a projected radius equal to the MW-LMC distance! In this talk I will present the latest result of our coordinated attempt to characterise all porto-cluster candidates discovered in the SPT survey. |
format |
Conference Object |
author |
Weiss, Axel |
spellingShingle |
Weiss, Axel Caught in the act - massive cluster formation at z=3-7 witnessed by APEX/ALMA |
author_facet |
Weiss, Axel |
author_sort |
Weiss, Axel |
title |
Caught in the act - massive cluster formation at z=3-7 witnessed by APEX/ALMA |
title_short |
Caught in the act - massive cluster formation at z=3-7 witnessed by APEX/ALMA |
title_full |
Caught in the act - massive cluster formation at z=3-7 witnessed by APEX/ALMA |
title_fullStr |
Caught in the act - massive cluster formation at z=3-7 witnessed by APEX/ALMA |
title_full_unstemmed |
Caught in the act - massive cluster formation at z=3-7 witnessed by APEX/ALMA |
title_sort |
caught in the act - massive cluster formation at z=3-7 witnessed by apex/alma |
publisher |
Zenodo |
publishDate |
2019 |
url |
https://dx.doi.org/10.5281/zenodo.3585172 https://zenodo.org/record/3585172 |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_relation |
https://zenodo.org/communities/alma2019caligari https://dx.doi.org/10.5281/zenodo.3585171 https://zenodo.org/communities/alma2019caligari |
op_rights |
Open Access Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5281/zenodo.3585172 https://doi.org/10.5281/zenodo.3585171 |
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1766202375351042048 |