Tuesday, April 08, 2008

National Astronomy Meeting - NAM2008 at Queen's University Belfast

National Astronomy Meeting - NAM2008 at Queen's University Belfast

Despite the gloom cast by the current STFC funding crisis, UK astronomers nevertheless convened recently in Belfast for NAM 2008, and still found time to discuss a wide range of papers and research, which I've copied here from the NAM website...


And here's a look at the last item on the list, which was in fact the first item on the NAM agenda...

New measurements from some of the most distant galaxies bolster the evidence that the strongest burst of star formation in the history of the Universe occurred about two billion years after the Big Bang. An international team of astronomers from the UK, France, Germany and the USA have found evidence for a dramatic surge in star birth in a newly discovered population of massive galaxies in the early Universe.

In his talk at the RAS National Astronomy Meeting in Belfast on Tuesday 1 April, team member Dr Scott Chapman from the Institute of Astronomy in Cambridge will present observations of five of these galaxies that are forming stars at a tremendous rate and have large reservoirs of gas that will power the star formation for hundreds of millions of years. Dr Chapman?s work is supported by a parallel study made by PhD student Caitlin Casey, who finds that the star formation in the new galaxies is distributed over a vast area.
The galaxies are so distant that the light we detect from them has been travelling for more than 10 billion years.

This means that we see them as they were about a three billion years after the Big Bang. The recent discovery of a new type of extremely luminous galaxy in this epoch - one that is very faint in visible light, but much brighter at longer, radio wavelengths - is the key to the new results.
A related type of galaxy was first found in 1997 (but not well understood until 2003) using a new and much more sensitive camera that detects radiation emitted at submillimetre wavelengths (longer than the wavelengths of visible light that we see with but somewhat shorter than radio waves). The camera, called `SCUBA' was attached to the James Clerk Maxwell Telescope (JCMT), on Mauna Kea in Hawaii.

On the subject of James Clerk Maxwell, the Royal Society has just published the following...

Volume 366 Number 1871 / May 28, 2008 of Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences

Theme Issue ‘James Clerk Maxwell 150 years on’ compiled by John S. Reid, Charles H.-T. Wang and J. Michael T. Thompson

image of Lovell Telescope at Jodrell Bank from here

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