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PRODID:-//Virginia Tech//VT Calendar//EN
BEGIN:VEVENT
DTSTAMP:20161005T173000Z
UID:1474660089334@events.msu.edu
CATEGORIES:Conferences / Seminars / Lectures
DTSTART:20161005T173000Z
DTEND:20161006T035900Z
SUMMARY:Astronomy & Astrophysics Seminar
DESCRIPTION:
 Speaker: Kelsey Johnson\n
 Speaker's Institution: 
 Virginia\n
 Seminar Title:Ancient Relics & Infant 
 Titans: Probing Massive Star Cluster Formation 
 with ALMA\n
 Abstract:\n
 Observationally 
 constraining the physical conditions that gave 
 rise to ancient globular star\n
 clusters has 
 been a long-standing challenge, yet we know 
 these extreme objects were formed\n
 prolifically 
 in the early universe. Now with the ALMA Observatory 
 on-line, we can begin to\n
 probe the 
 birth environments of analogous massive clusters 
 in a variety of "local" galaxies with\n
 sufficient angular resolution. I will give an 
 overview of ALMA observations of galaxies in\n
 which 
 candidate proto-super star cluster molecular 
 clouds have been identified. These new 
 data\n
 probe the physical conditions that give 
 rise to super star clusters, providing information 
 on their\n
 densities, pressures, and 
 temperatures. In particular, the observations 
 indicate that these clouds\n
 may be subject to 
 external pressures of P/k > 10^8 K cm^{-3}, 
 which is consistent with the\n
 prevalence of 
 optically observed adolescent super star clusters 
 in interacting galaxy systems and\n
 other 
 high pressure environments. ALMA observations 
 also enable an assessement of the\n
 molecular 
 cloud chemical abundances in the regions surrounding 
 super star clusters. Molecular\n
 clouds 
 associated with existing super star clusters 
 are strongly correlated with HCO+ emission,\n
 but 
 appear to have relatively low ratio of 
 CO/HCO+ emission compared to other clouds,\n
 indicating 
 that the super star clusters are 
 impacting the molecular abundances in their vicinity. 
 \n\n
 Price: free\n
 Sponsor: Biomedical and Physical Sciences Building\n
 Sponsor's Homepage: https://www.pa.msu.edu/\n
 Contact name: Shawna Prater\n
 Contact email: prater@pa.msu.edu\n
 for more info visit the web at:\n 
 https://www.pa.msu.edu/seminars/ast_seminars/current\n
LOCATION: Room 1400 Biomedical and Physical Sciences Building
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