SCUBA-2 overdensities associated with candidate protoclusters selected from Planck data
| dc.contributor.author | Ibar, Eduardo | |
| dc.date.accessioned | 2021-07-28T16:33:33Z | |
| dc.date.available | 2021-07-28T16:33:33Z | |
| dc.date.issued | 2020 | |
| dc.description.abstract | We measure the 850-μm source densities of 46 candidate protoclusters selected from the Planck High-z catalogue (PHz) and the Planck Catalogue of Compact Sources (PCCS) that were followed up with Herschel -SPIRE and SCUBA-2. This paper aims to search for overdensities of 850-μm sources in order to select the fields that are most likely to be genuine protoclusters. Of the 46 candidate protoclusters, 25 have significant overdensities (>5 times the field counts), 11 have intermediate overdensities (3–5 times the field counts) and 10 have no overdensity (<3 times the field counts) of 850-μm sources. We find that the enhanced number densities are unlikely to be the result of sample variance. Compared with the number counts of another sample selected from Planck’s compact source catalogues, this [PHz+PCCS]-selected sample has a higher fraction of candidate protoclusters with significant overdensities, though both samples show overdensities of 850-μm sources above intermediate level. Based on the estimated star-formation rate densities (SFRDs), we suggest that both samples can efficiently select protoclusters with starbursting galaxies near the redshift at which the global field SFRD peaks (2 < z < 3). Based on the confirmation of overdensities found here, future follow-up observations on other PHz targets may greatly increase the number of genuine DSFG-rich clusters/protoclusters. | en_ES |
| dc.identifier.doi | https://doi.org/10.1093/mnras/staa1096 | |
| dc.identifier.uri | http://repositoriobibliotecas.uv.cl/handle/uvscl/2213 | |
| dc.language.iso | en | en_ES |
| dc.publisher | Royal Astronomical Society | en_ES |
| dc.source | Monthly Notices of the Royal Astronomical Society | en_ES |
| dc.subject | GALAXIES: HIGH-REDSHIFT | en_ES |
| dc.subject | GALAXIES: STARBURST | en_ES |
| dc.subject | SUBMILLIMETRE: GALAXIES | en_ES |
| dc.title | SCUBA-2 overdensities associated with candidate protoclusters selected from Planck data | en_ES |
| dc.type | Articulo | en_ES |
| uv.catalogador | RCR DIBRA | en_ES |