NOAO >   Observing Info >   Approved Programs >   2017A-0901

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Program Information for 2017A-0901


PI: Kyoung-Soo Lee, Purdue U., soolee@purdue.edu
Address:

Title: Unveiling the Most Massive Structure at z=3.78

Abstract: In the hierarchical framework, the highest density peaks mark the sites of the earliest and largest galaxy formation. Identifying these high-redshift “protocluster” would improve our understanding of the formation and evolution of these massive systems and their constituent galaxies. A recently discovered structure, dubbed as PC217.96+32.3, is currently the highest redshift Coma cluster analog at z=3.78, observed when the universe was only 1.6. billion years old. The existing observations strongly suggest that both UV continuum and Lyman Alpha luminosities of the member galaxies are higher near the cluster core than those in the field, suggesting that star formation is enhanced in dense environments. We propose deeper narrow-band (sampling the redshifted Lya emission) and z-band imaging with ODI with two primary aims: i) to probe further down into the Lya luminosity function; and ii) to place strong constraints on the stellar population properties of the spectroscopically confirme d protocluster members.

Program Type: Purdue

Scheduled Nights:
Run 1 (2017A):  WIYN/ODI -- 3n on Apr 29 - May 01 2017


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NOAO >   Observing Info >   Approved Programs >   2017A-0901

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