Second Announcement of a Workshop on

     Scientific Opportunities with the Compact Array at 25-50 GHz
     ============================================================


	  Tuesday, 31 May 2005, 13.30, ATNF Lecture Theatre
		    Teleconference Extension: 4613

Plans are underway to outfit the Australia Telescope Compact Array
with receivers in the frequency range between 25 GHz and 50 GHz.  In
support of the scientific justification for this project, the AT Users
Committee suggested that a half-day workshop be held to find out
where, from a user's perspective, the primary interests in this
frequency range are. The scientific justification will influence the
design of the hardware, and will position this project among its peers
at ATNF.

Preliminary program:

Session 1: Galactic Astronomy
Chair: Enno Middelberg

13:30 Enno Middelberg - Welcome and introduction
13:35 Warwick Wilson - Technical details
13:50 Michael Burton - The birth of HII regions
14:05 Cormac Purcell - Interesting molecular lines in the 7mm band
14:20 Peter Barnes - Spectroscopy of star formation
14:35 Kate Brooks - Probing the early phases of massive star formation 
                    with 7-mm continuum emission
14:50 Jessica Chapman - SiO masers from AGB stars
15:05 Lister Staveley-Smith - SN1987A
15:20 Maxim Voronkov - Methanol masers
15:35 Coffee break

Session 2: Extragalactic Astronomy
Chair: Steven Tingay

16:00 Jim Lovell - 7 mm observations using Tidbinbilla
16:15 Steven Tingay - VLBI @ 7 mm
16:30 Roopesh Ojha - Extending the ICRF to 24/43 GHz
16:35 Carole Jackson - Extragalactic radio sources and the CMB
16:50 Carlos De Breuck - An introduction to redshifted CO
17:05 Ilana Klamer - Redshifted CO with 7 mm			      	
17:20 Ron Ekers - The high-redshift universe		      	
17:35 Discussion                                                


All speakers should email their contributions to
at_meetings@atnf.csiro.au before 31 May. This will allow people at the
remote sites to access your talk. 

The draft science case document is available as PDF document at
http://www.atnf.csiro.au/people/Enno.Middelberg/7mm/science.pdf

If you feel that you can contribute to one of these points, or think
that an issue important to you or your field is missing, please
contribute to the workshop with a short talk. Estimates of expected
sensitivity and resolution are summarized in this PDF document,
including a comparison to the neighbouring 12 mm and 3 mm bands:
http://www.atnf.csiro.au/people/Enno.Middelberg/7mm/data.pdf

If you need more information about the system to prepare your
contribution (sensitivity estimates, frequency range), please contact
me at enno.middelberg@csiro.au.


We are looking forward to hearing from you!


Enno Middelberg, Project Scientist
Steven Tingay, AT Users Committee