Overdensities of submillimetre-bright sources around candidate protocluster cores selected from the South Pole Telescope survey
We present APEX-LABOCA 870-mu m observations of the fields surrounding the nine brightest high-redshift unlensed objects discovered in the South Pole Telescope's (SPT) 2500 deg(2) survey. Initially seen as point sources by SPT's 1-arcmin beam, the 19-arcsec resolution of our new data enabl...
Published in: | Monthly Notices of the Royal Astronomical Society |
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2021
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Online Access: | https://curis.ku.dk/portal/da/publications/overdensities-of-submillimetrebright-sources-around-candidate-protocluster-cores-selected-from-the-south-pole-telescope-survey(08600b0f-a5b9-4fab-8917-3e7355bbd420).html https://doi.org/10.1093/mnras/stab2800 https://curis.ku.dk/ws/files/299752370/stab2800.pdf |
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ftcopenhagenunip:oai:pure.atira.dk:publications/08600b0f-a5b9-4fab-8917-3e7355bbd420 2024-06-09T07:49:36+00:00 Overdensities of submillimetre-bright sources around candidate protocluster cores selected from the South Pole Telescope survey Wang, George C. P. Hill, Ryley Chapman, S. C. Weiss, A. Scott, Douglas Apostolovski, Yordanka Aravena, Manuel Archipley, Melanie Ann Bethermin, Matthieu Canning, R. E. A. De Breuck, Carlos Dong, Chenxing Everett, W. B. Gonzalez, Anthony Greve, Thomas R. Hayward, Christopher C. Hezaveh, Yashar Jarugula, Sreevani Marrone, D. P. Phadke, Kedar A. Reuter, Cassie A. Rotermund, K. M. Spilker, Justin S. Vieira, Joaquin D. 2021-12-22 application/pdf https://curis.ku.dk/portal/da/publications/overdensities-of-submillimetrebright-sources-around-candidate-protocluster-cores-selected-from-the-south-pole-telescope-survey(08600b0f-a5b9-4fab-8917-3e7355bbd420).html https://doi.org/10.1093/mnras/stab2800 https://curis.ku.dk/ws/files/299752370/stab2800.pdf eng eng info:eu-repo/semantics/openAccess Wang , G C P , Hill , R , Chapman , S C , Weiss , A , Scott , D , Apostolovski , Y , Aravena , M , Archipley , M A , Bethermin , M , Canning , R E A , De Breuck , C , Dong , C , Everett , W B , Gonzalez , A , Greve , T R , Hayward , C C , Hezaveh , Y , Jarugula , S , Marrone , D P , Phadke , K A , Reuter , C A , Rotermund , K M , Spilker , J S & Vieira , J D 2021 , ' Overdensities of submillimetre-bright sources around candidate protocluster cores selected from the South Pole Telescope survey ' , Monthly Notices of the Royal Astronomical Society , vol. 508 , no. 3 , pp. 3754-3770 . https://doi.org/10.1093/mnras/stab2800 galaxies: abundances galaxies: clusters: general galaxies: high-redshift submillimetre: galaxies COSMOLOGY LEGACY SURVEY FAR-INFRARED PROPERTIES LARGE-SCALE STRUCTURE GALAXY CLUSTER STAR-FORMATION BOLOMETER CAMERA HERSCHEL-SPIRE ALMA SURVEY REDSHIFT DISTRIBUTION MILLIMETER-BRIGHT article 2021 ftcopenhagenunip https://doi.org/10.1093/mnras/stab2800 2024-05-16T11:29:23Z We present APEX-LABOCA 870-mu m observations of the fields surrounding the nine brightest high-redshift unlensed objects discovered in the South Pole Telescope's (SPT) 2500 deg(2) survey. Initially seen as point sources by SPT's 1-arcmin beam, the 19-arcsec resolution of our new data enables us to deblend these objects and search for submillimetre (submm) sources in the surrounding fields. We find a total of 98 sources above a threshold of 3.7 sigma in the observed area of 1300 arcmin(2), where the bright central cores resolve into multiple components. After applying a radial cut to our LABOCA sources to achieve uniform sensitivity and angular size across each of the nine fields, we compute the cumulative and differential number counts and compare them to estimates of the background, finding a significant overdensity of delta approximate to 10 at S-8(70) = 14 mJy. The large overdensities of bright submm sources surrounding these fields suggest that they could be candidate protoclusters undergoing massive star formation events. Photometric and spectroscopic redshifts of the unlensed central objects range from z =3 to 7, implying a volume density of star-forming protoclusters of approximately 0.1 Gpc(-3). If the surrounding submm sources in these fields are at the same redshifts as the central objects, then the total star formation rates of these candidate protoclusters reach 10 000 M-circle dot yr(-1), making them much more active at these redshifts than seen so far in either simulations or observations. Article in Journal/Newspaper South pole University of Copenhagen: Research South Pole Monthly Notices of the Royal Astronomical Society 508 3 3754 3770 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
topic |
galaxies: abundances galaxies: clusters: general galaxies: high-redshift submillimetre: galaxies COSMOLOGY LEGACY SURVEY FAR-INFRARED PROPERTIES LARGE-SCALE STRUCTURE GALAXY CLUSTER STAR-FORMATION BOLOMETER CAMERA HERSCHEL-SPIRE ALMA SURVEY REDSHIFT DISTRIBUTION MILLIMETER-BRIGHT |
spellingShingle |
galaxies: abundances galaxies: clusters: general galaxies: high-redshift submillimetre: galaxies COSMOLOGY LEGACY SURVEY FAR-INFRARED PROPERTIES LARGE-SCALE STRUCTURE GALAXY CLUSTER STAR-FORMATION BOLOMETER CAMERA HERSCHEL-SPIRE ALMA SURVEY REDSHIFT DISTRIBUTION MILLIMETER-BRIGHT Wang, George C. P. Hill, Ryley Chapman, S. C. Weiss, A. Scott, Douglas Apostolovski, Yordanka Aravena, Manuel Archipley, Melanie Ann Bethermin, Matthieu Canning, R. E. A. De Breuck, Carlos Dong, Chenxing Everett, W. B. Gonzalez, Anthony Greve, Thomas R. Hayward, Christopher C. Hezaveh, Yashar Jarugula, Sreevani Marrone, D. P. Phadke, Kedar A. Reuter, Cassie A. Rotermund, K. M. Spilker, Justin S. Vieira, Joaquin D. Overdensities of submillimetre-bright sources around candidate protocluster cores selected from the South Pole Telescope survey |
topic_facet |
galaxies: abundances galaxies: clusters: general galaxies: high-redshift submillimetre: galaxies COSMOLOGY LEGACY SURVEY FAR-INFRARED PROPERTIES LARGE-SCALE STRUCTURE GALAXY CLUSTER STAR-FORMATION BOLOMETER CAMERA HERSCHEL-SPIRE ALMA SURVEY REDSHIFT DISTRIBUTION MILLIMETER-BRIGHT |
description |
We present APEX-LABOCA 870-mu m observations of the fields surrounding the nine brightest high-redshift unlensed objects discovered in the South Pole Telescope's (SPT) 2500 deg(2) survey. Initially seen as point sources by SPT's 1-arcmin beam, the 19-arcsec resolution of our new data enables us to deblend these objects and search for submillimetre (submm) sources in the surrounding fields. We find a total of 98 sources above a threshold of 3.7 sigma in the observed area of 1300 arcmin(2), where the bright central cores resolve into multiple components. After applying a radial cut to our LABOCA sources to achieve uniform sensitivity and angular size across each of the nine fields, we compute the cumulative and differential number counts and compare them to estimates of the background, finding a significant overdensity of delta approximate to 10 at S-8(70) = 14 mJy. The large overdensities of bright submm sources surrounding these fields suggest that they could be candidate protoclusters undergoing massive star formation events. Photometric and spectroscopic redshifts of the unlensed central objects range from z =3 to 7, implying a volume density of star-forming protoclusters of approximately 0.1 Gpc(-3). If the surrounding submm sources in these fields are at the same redshifts as the central objects, then the total star formation rates of these candidate protoclusters reach 10 000 M-circle dot yr(-1), making them much more active at these redshifts than seen so far in either simulations or observations. |
format |
Article in Journal/Newspaper |
author |
Wang, George C. P. Hill, Ryley Chapman, S. C. Weiss, A. Scott, Douglas Apostolovski, Yordanka Aravena, Manuel Archipley, Melanie Ann Bethermin, Matthieu Canning, R. E. A. De Breuck, Carlos Dong, Chenxing Everett, W. B. Gonzalez, Anthony Greve, Thomas R. Hayward, Christopher C. Hezaveh, Yashar Jarugula, Sreevani Marrone, D. P. Phadke, Kedar A. Reuter, Cassie A. Rotermund, K. M. Spilker, Justin S. Vieira, Joaquin D. |
author_facet |
Wang, George C. P. Hill, Ryley Chapman, S. C. Weiss, A. Scott, Douglas Apostolovski, Yordanka Aravena, Manuel Archipley, Melanie Ann Bethermin, Matthieu Canning, R. E. A. De Breuck, Carlos Dong, Chenxing Everett, W. B. Gonzalez, Anthony Greve, Thomas R. Hayward, Christopher C. Hezaveh, Yashar Jarugula, Sreevani Marrone, D. P. Phadke, Kedar A. Reuter, Cassie A. Rotermund, K. M. Spilker, Justin S. Vieira, Joaquin D. |
author_sort |
Wang, George C. P. |
title |
Overdensities of submillimetre-bright sources around candidate protocluster cores selected from the South Pole Telescope survey |
title_short |
Overdensities of submillimetre-bright sources around candidate protocluster cores selected from the South Pole Telescope survey |
title_full |
Overdensities of submillimetre-bright sources around candidate protocluster cores selected from the South Pole Telescope survey |
title_fullStr |
Overdensities of submillimetre-bright sources around candidate protocluster cores selected from the South Pole Telescope survey |
title_full_unstemmed |
Overdensities of submillimetre-bright sources around candidate protocluster cores selected from the South Pole Telescope survey |
title_sort |
overdensities of submillimetre-bright sources around candidate protocluster cores selected from the south pole telescope survey |
publishDate |
2021 |
url |
https://curis.ku.dk/portal/da/publications/overdensities-of-submillimetrebright-sources-around-candidate-protocluster-cores-selected-from-the-south-pole-telescope-survey(08600b0f-a5b9-4fab-8917-3e7355bbd420).html https://doi.org/10.1093/mnras/stab2800 https://curis.ku.dk/ws/files/299752370/stab2800.pdf |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_source |
Wang , G C P , Hill , R , Chapman , S C , Weiss , A , Scott , D , Apostolovski , Y , Aravena , M , Archipley , M A , Bethermin , M , Canning , R E A , De Breuck , C , Dong , C , Everett , W B , Gonzalez , A , Greve , T R , Hayward , C C , Hezaveh , Y , Jarugula , S , Marrone , D P , Phadke , K A , Reuter , C A , Rotermund , K M , Spilker , J S & Vieira , J D 2021 , ' Overdensities of submillimetre-bright sources around candidate protocluster cores selected from the South Pole Telescope survey ' , Monthly Notices of the Royal Astronomical Society , vol. 508 , no. 3 , pp. 3754-3770 . https://doi.org/10.1093/mnras/stab2800 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1093/mnras/stab2800 |
container_title |
Monthly Notices of the Royal Astronomical Society |
container_volume |
508 |
container_issue |
3 |
container_start_page |
3754 |
op_container_end_page |
3770 |
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