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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/95271
- Broadband imaging segregation of z ~ 3 Lyα emitting and Lyα absorbing galaxies
- Cooke, Jeff
- The spectral properties of Lyman break galaxies (LBGs) offer a means to isolate pure samples displaying either dominant Ly-alpha in absorption or Ly-alpha in emission using broadband information alone. We present criteria developed using a large z ~ 3 LBG spectroscopic sample from the literature that enables large numbers of each spectral type to be gathered in photometric data, providing good statistics for multiple applications. In addition, we find that the truncated faint, blue-end tail of z ~ 3 LBG population overlaps and leads directly into an expected Ly-alpha emitter (LAE) population. As a result, we present simple criteria to cleanly select large numbers of z ~ 3 LAEs in deep broadband surveys. We present the spectroscopic results of 32 r' <~ 25.5 LBGs and r' <~ 27.0 LAEs at z ~ 3 pre-selected in the Canada-France-Hawaii Telescope Legacy Survey that confirm these criteria.
- Publication type
- Journal article
- Astrophysical Journal, Vol. 704, no. 1, part 2 (Oct 2009), pp. L62-L65
- Publication year
- FOR Code(s)
- 0201 Astronomical and Space Sciences
- Fundamental parameters of galaxies; Galaxy evolution; Galaxy formation; Galaxy photometry
- Institute of Physics Publishing
- Publisher URL
- Copyright © 2009 The American Astronomical Society. All rights reserved. The American Astronomical Society does not allow institutions to archive either the accepted manuscript or the published version of the article. However, you can find an earlier version of the full text here: http://arxiv.org/abs/0909.4536.
- Peer reviewed