Column density distribution and cosmological mass density of neutral gas: Sloan Digital Sky Survey-III Data Release 9

@inproceedings{Noterdaeme2012ColumnDD,
  title={Column density distribution and cosmological mass density of neutral gas: Sloan Digital Sky Survey-III Data Release 9},
  author={Pasquier Noterdaeme and Patrick Petitjean and W. C. Jr. Carithers and Isabelle P{\^a}ris and Andreu Font-Ribera and Stephen Bailey and Pierre Astier and Dmitry Bizyaev and Garrett L. Ebelke and Hayley Finley and Jianquan Ge and Elena Malanushenko and Viktor Malanushenko and Jordi Miralda-Escud'e and Adam D. Myers and Daniel J. Oravetz and Kaike Pan and Matthew M. Pieri and Nicholas Ross and Donald P. Schneider and Audrey E. Simmons and Donald G. York},
  year={2012}
}
We present the first results from an ongoing survey for damped Lyman-α systems (DLAs) in the spectra of z > 2 quasars observed in the course of the Baryon Oscillation Spectroscopic Survey (BOSS), which is part of the Sloan Digital Sky Survey (SDSS) III. Our full (non-statistical) sample, based on Data Release 9, comprises 12 081 systems with log N(Hi) ≥ 20, out of which 6839 have logN(Hi) ≥ 20.3. This is the largest DLA sample ever compiled, superseding that from SDSS-II by a factor of seven. 
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