1. Title G. Gavazzi Universita’ di Milano – Bicocca 5 major upgrades since 1991: 2: The Gregorian upgrade 1: The ground screen 3: Road 22 completed 4: Harris computers in the trash 5: ALFA

2. ALFA full coverage of the Virgo cluster (800 deg 2 ) Detections or 1 mJy limits on 2000 VCC galaxies Tully-Fisher distances Search for intergalactic HI clouds

3. S E D

4. GOLDmine http://goldmine.mib.infn.it. it

5. Young stars HI deficientHI normal Gavazzi et al. 2002 b = present / past SFR  L H  / L H

6. The total available gas regulates the global star formation HI def

7. H  extent = disk NON deficient galaxy Non def R+HI HH

8. deficient galaxy truncated H  Emission def R+HI HH

9. Radii HI HH CO

10. Virgo follow-up ALFA: HI survey (2005) GALEX: UV survey (this year) AstroF: FIR survey (2005) Two complete samples: E+dE horizontal WFS strip at INT 127 galaxies (m<18) B imaging S+Irr ISO sample 118 galaxies (m<18)

11. VLT: velocity dispersion NIR imaging XMM: 10 fields E+dE: horizontal WFS strip

12. ISO sample Sub-mm H  imaging HI Arecibo Visible imag. (Megacam?) Optical spectr.

14. VCC 1987 HH R HI vcc1987

15. Cayatte VIRGO HI Cayatte et al. (1990) VCC1727 VCC 1615 VCC 307 VCC 1987 0.75 Mpc 1.5 Mpc

16. title G. Gavazzi Universita’ di Milano – Bicocca The Virgo cluster

17. HI Virgo