200-MICRON CONTINUUM SCIENCE

Derek Ward-ThompsonJeremiah Horrocks Institute

University of Central Lancashire

Oxford ALMA Band 11 Meeting – 19-20 March 2013

200um from the ground

InstallingThumper

Thumper on the JCMT

Atmospheric windows

Transmission

Thumper maps

Some science

Core mass function and stellar IMF – exploring a causal relation (A&A 518, L102)

SEDs of pre-stellar cores

So use Herschel

Herschel imaging

Resolution mismatch

VLA 1x0.5”(Herschel 15-30”)

Merlin 0.1x0.05” (ALMA 0.15-3”)

It’s a no-brainer!

ALMA Bands 1-10 don’t give temp. Herschel et al too low resolution No high-res 200-um alternative

planned Need temperature for column density Need column density for mass Need mass for astrophysics We need ALMA Band 11…… ……please build it !