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Paper detail

The Tianlai-WIYN North Celestial Cap Redshift Survey

We present the results of a small, low redshift spectroscopic survey of galaxies within 3 degrees of the North Celestial Pole (NCP) selected using V-band photometry obtained from the North Celestial Cap Survey (NCCS) (Gorbikov & Brosch 2014). The purpose of the current survey is to create a redshift space template for 21 cm emission from neutral hydrogen with which to correlate radio line intensity observations by the Tianlai dish and cylinder interferometers. A total of 898 redshifts were obtained from the 2102 extended objects in the NCCS with m_V < 19 in the survey area. After accounting for extinction, the survey geometry and selection effects, the number density and clustering pattern of galaxies in the redshift catalog are consistent with other low redshift surveys. We were also able to identify 11 galaxy cluster candidates from this redshift catalog.

preprint2026arXivOpen access
Reza AnsariGabriela A. MarquesJohn P. MarrinerOlivier PerdereauElena PinettiLily RobinthalAlbert StebbinsHaoxuan SunPeter TimbieGregory S. TuckerEli DoyleJocelyn ChuE. Revsen KaraalpXuelei ChenJixia LiFengquan Wu
astro-ph.CO
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Authors

Reza AnsariGabriela A. MarquesJohn P. MarrinerOlivier PerdereauElena PinettiLily RobinthalAlbert StebbinsHaoxuan SunPeter TimbieGregory S. TuckerEli DoyleJocelyn ChuE. Revsen KaraalpXuelei ChenJixia LiFengquan Wu

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