An H-alpha search for over-dense regions at z=2.23

Y. Matsuda, Ian Smail, J. E. Geach +16

We present the results of a narrow-band (H2S1, 2.121/0.021um) imaging search with WFCAM/UKIRT for H-alpha emitters around several potential signposts of rare (10^-7-10^-8 Mpc^-3) o…