تقرير
Column density distribution and cosmological mass density of neutral gas: Sloan Digital Sky Survey-III Data Release 9
| العنوان: | Column density distribution and cosmological mass density of neutral gas: Sloan Digital Sky Survey-III Data Release 9 |
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| المؤلفون: | Noterdaeme, P., Petitjean, P., Carithers, W. C., Pâris, I., Font-Ribera, A., Bailey, S., Aubourg, E., Bizyaev, D., Ebelke, G., Finley, H., Ge, J., Malanushenko, E., Malanushenko, V., Miralda-Escudé, J., Myers, A. D., Oravetz, D., Pan, K., Pieri, M. M., Ross, N. P., Schneider, D. P., Simmons, A., York, D. G. |
| سنة النشر: | 2012 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Cosmology and Nongalactic Astrophysics |
| الوصف: | We present the first results from an ongoing survey for Damped Lyman-alpha 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 6,839 have log N(HI)>=20.3. This is the largest DLA sample ever compiled, superseding that from SDSS-II by a factor of seven. Using a statistical sub-sample and estimating systematics from realistic mock data, we probe the N(HI) distribution at Comment: Accepted for publication as Letter to the Editor in A&A |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1051/0004-6361/201220259 |
| URL الوصول: | http://arxiv.org/abs/1210.1213 |
| رقم الأكسشن: | edsarx.1210.1213 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1051/0004-6361/201220259 |
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