Lyman Break Galaxies, Lyalpha Emitters, and a Radio Galaxy in a Protocluster at z = 4.1
- Overzier, Roderik A.
- Bouwens, R. J.
- Cross, N. J. G.
- Venemans, B. P.
- Miley, George K.
- Zirm, A. W.
- Benítez, N.
- Blakeslee, John P.
- Coe, D.
- Demarco, Ricardo
- Ford, Holland C.
- Homeier, Nicole L.
- Illingworth, Garth D.
- Kurk, J. D.
- Martel, A. R.
- Mei, Simona
- Oliveira, I.
- Röttgering, H. J. A.
- Tsvetanov, Z. I.
- Zheng, W.
DOIAbstract
International audienceWe present deep HST ACS observations in g475r625i775z850 toward the z=4.1 radio galaxy TN J1338-1942 and its overdensity of >30 spectroscopically confirmed Lyalpha emitters (LAEs). We select 66 g475 band dropouts to z850,5sigma=27, 6 of which are also LAEs. Although our color-color selection results in a relatively broad redshift range centered on z=4.1, the field of TN J1338-1942 is richer than the average field at the >5 sigma significance, based on a comparison with GOODS. The angular distribution is filamentary with about half of the objects clustered near the radio galaxy, and a small, excess signal (2 sigma) in the projected pair counts at separations of theta1014 Msolar structure, confirming that it is possible ...
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