science with alfalfa, etc. riccardo giovanelli may 2004
TRANSCRIPT
Science with ALFALFA, etc.Science with ALFALFA, etc.
Riccardo GiovanelliRiccardo Giovanelli
May 2004
xexxd
dnx 1*)10(ln
)(log)(
*/MMx HIwhere
Zwaan et al. 97: Zwaan et al. 97: Rosenberg & Schneider 02:Rosenberg & Schneider 02:370
* 0048.0 h 370
* 0041.0 h70
* log286.9/log hMM sun 70* log294.9/log hMM sun
20.1 53.1
[Mpc-3 dex-1]
HIMFHIMF
Science Topics to be addressed byALFALFA:
1 The investigation of the HI Mass Function
2 High Mass HI sources
3 Environmental variations of the HI properties of galaxies
4 The low HI Column density environment of galaxies
5 Environmental differences in the HI Mass function
6 HI absorbers and the link to Lyman absorbers
7 OH Megamasers at intermediate redshift
Survey Beam Area rms min MHI Ndet ts Nlos arcmin sq. deg. (@ 13 km/s) @ 1 Mpc sec
AHISS 3.3 13 0.8 1.0x105 66 var 6,000ADBS 3.3 430 3.5 4.2x105 265 12 140,000HIPASS 15. 30,000 14 1.9x106 ~5000 460 500,000HIJASS 12. (13,000) 14 1.9x106 (?) 3500 (380,000)J-Virgo 12 32 14 1.9x106 31 3500 900HIDEEP 15 32 3.2 4.4x105 173 9000 670
AO-DEEP 3.5 0.4 0.05 0.7x104 40? 252,000 105
ALFALFA 3.5 12,000 3.0 4.0x105 12,000? 12 106
VAVA 3.5 900 1.3 1.3x105 3,000? 12x5 300,000
ZOA 3.5 1000 0.5 0.7x105 8,000? 300 330,000
HI Mass FunctionHI Mass Functionin the local Universein the local Universe
Parkes HIPASS survey: Zwaan et al. 2003