A galaxy group candidate at z   ≈  3.7 in the COSMOS field

A galaxy group candidate at z   ≈  3.7 in the COSMOS field

We report a galaxy group candidate HPC1001 at z  ≈ 3.7 in the COSMOS field. This structure was selected as a high galaxy overdensity at z  > 3 in the COSMOS2020 catalog. It contains ten candidate members, of which eight are assembled in a 10″ × 10″ area with the highest sky density among known pr...

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Veröffentlicht in:Astronomy and astrophysics (Berlin) 2022-09, Vol.665, p.L7
Hauptverfasser: Sillassen, Nikolaj B., Jin, Shuowen, Magdis, Georgios E., Daddi, Emanuele, Weaver, John R., Gobat, Raphael, Kokorev, Vasily, Valentino, Francesco, Finoguenov, Alexis, Shuntov, Marko, Gómez-Guijarro, Carlos, Coogan, Rosemary, Greve, Thomas R., Toft, Sune, Blanquez Sese, David
Format: Artikel
Sprache:eng
Schlagworte:
Astrophysics
Physics
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Zusammenfassung:We report a galaxy group candidate HPC1001 at z  ≈ 3.7 in the COSMOS field. This structure was selected as a high galaxy overdensity at z  > 3 in the COSMOS2020 catalog. It contains ten candidate members, of which eight are assembled in a 10″ × 10″ area with the highest sky density among known protoclusters and groups at z  > 3. Four out of ten sources were also detected at 1.2 mm with Atacama Large Millimeter Array continuum observations. Photometric redshifts, measured by four independent methods, fall within a narrow range of 3.5 
ISSN:0004-6361
1432-0746
1432-0756
DOI:10.1051/0004-6361/202244661