ALFALFA: HI cosmology at z=0
Martha Haynes
Cornell University
The Arecibo Legacy Fast ALFA (ALFALFA) survey is an on-going blind
HI survey designed to obtain a census of HI-bearing objects over a
cosmologically significant volume of the local universe. To date, about
77% of the ALFALFA observations have been completed, and the current
working catalog contains some 13000 high quality detections extracted from
about 2000 square degrees of sky. ALFALFA is specifically designed to
detect gas rich low mass halos nearby and to probe the HI mass functions
in different environments, including voids, nearby groups such as Leo,
and the Virgo cluster. Here I will present an overview of recent ALFALFA
results, especially those related to the determination of the local HI
mass function and the "void" and "missing satellite" problems.
Date: | Tuesday, 15 September 2009 |
Time: | 16:00 |
Where: | McGill University |
| Ernest Rutherford Physics Building, R.E. Bell Conference Room (room 103) |
Contact: | Vicky Kaspi |
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