Description
Observations of the radio galaxy MRC 0316-257 at z=3.13 and the surrounding field resulted in the discovery of 77 candidate Ly{alpha} emitters with a rest-frame equivalent width of >15{AA}. 31 of 40 candidate emitters observed spectroscopically have redshifts similar to that of the radio galaxy. The properties of the Ly{alpha} emission line of the 31 confirmed emitters and the radio galaxy are presented in the file table2.dat (Table 2 in the paper). The magnitudes and continuum slopes of these z~3.1 galaxies are printed in the file table4.dat (Table 4 in the paper). The Ly{alpha} galaxies are faint, blue and small, consistent with the emitters being young starforming galaxies which are still nearly dust free.
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