The UHH Research Park includes the headquarters for the East Asian Observatory, the Caltech Submillimeter Observatory, Subaru, Gemini, UKIRT, the Smithsonian Submillimeter Array and the Institute for Astronomy, plus the astronomers at the University of Hawaii at Hilo. We are one of the major centres for astronomy in the world and encourage all visitors to the JCMT to take advantage of the proximity of these institutes, and give a seminar while in Hilo. Your talk will be advertised at each of the above institutes.

Upcoming Seminar: September 18th, 2017, 2pm (HST)

A high resolution study of the star-formation law: the test case of M33

Location: EAO Office, Hilo

Tom Williams, Cardiff University, UK

For nearly 2 decades, the Schmidt index of the star-formation law for a range of galaxies has been found to be around 1.4, generally attributed to star-formation timescales being dictated by the free-fall time. However, another school of thought is that star-formation is more closely linked to dense gas, and that this index is closer to 1. Recent work has also shown that on the scale of a giant molecular cloud complex (~100pc), this law breaks down. Using M33 as a laboratory, I have brought together a panchromatic data set from GALEX UV to SCUBA-2 observations to measure star-formation in a variety of ways. HI and CO(2-1) emission have been used to trace atomic and molecular hydrogen, and I also construct dust maps to trace the gas. My work shows that (a) the star-formation law does indeed break down at 100pc scales, and (b) that a linear Schmidt index is appropriate in M33 when considering molecular gas, or the classic 1.4 with total gas.

Where and How:

EAO seminars are (usually) held in the second floor conference room at the East Asia Observatory, 660 N. A’ohoku Place, Hilo, Hawaii. Please note that access to EAO is possible only through the main entrance (through the side doors facing Subaru).

If you would like to view the seminar via Polycom, please contact the helpdesk well in advance of the talk and we will make sure it’s switched on!

Our Polycom contact details are available on request.

The EAO phone number is: (808) 961-3756. A full list of past seminar speakers can be found here for 2017, here for 2016 and here for 2015. These pages also contain links to PDF copies of the seminar slides, where available.

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