Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/32191
Title: | A Planck-selected dusty proto-cluster at z=2.16 associated with a strong over-density of massive Hα emitting galaxies | Authors: | Yusei Koyama POLLETTA, Maria Del Carmen Ichi Tanaka Tadayuki Kodama Hervé Dole Geneviève Soucail Brenda Frye Matt Lehnert SCODEGGIO, MARCO |
Issue Date: | 2021 | Journal: | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. LETTERS | Number: | 503 | Issue: | 1 | First Page: | L1 | Abstract: | We discovered an over-density of H-alpha-emitting galaxies associated with a Planck compact source in the COSMOS field (PHzG237.0+42.5) through narrow-band imaging observations with Subaru/MOIRCS. This Planck-selected dusty proto-cluster at z=2.16 has 38 H-alpha emitters including six spectroscopically confirmed galaxies in the observed MOIRCS 4'x7' field (corresponding to ~2.0x3.5~Mpc^2 in physical scale). We find that massive H-alpha emitters with log(M*/Msun)>10.5 are strongly clustered in the core of the proto-cluster (within ~300-kpc from the density peak of the H-alpha emitters). Most of the H-alpha emitters in this proto-cluster lie along the star-forming main sequence using H-alpha-based SFR estimates, whilst the cluster total SFR derived by integrating the H-alpha-based SFRs is an order of magnitude smaller than those estimated from Planck/Herschel FIR photometry. Our results suggest that H-alpha is a good observable for detecting moderately star-forming galaxies and tracing the large-scale environment in and around high-z dusty proto-clusters, but there is a possibility that a large fraction of star formation could be obscured by dust and undetected in H-alpha observations. | URI: | http://hdl.handle.net/20.500.12386/32191 | URL: | https://academic.oup.com/mnrasl/article/503/1/L1/6154716?login=true https://ui.adsabs.harvard.edu/abs/2021MNRAS.503L...1K/abstract http://arxiv.org/abs/2008.13614v2 |
ISSN: | 1745-3925 | DOI: | 10.1093/mnrasl/slab013 | Bibcode ADS: | 2021MNRAS.503L...1K | Fulltext: | open |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
KOYAMA21.pdf | Pdf editoriale | 825.3 kB | Adobe PDF | View/Open |
Page view(s)
40
checked on Sep 13, 2024
Download(s)
14
checked on Sep 13, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are published in Open Access, unless otherwise indicated.