Physics
Scientific paper
Oct 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009atnf.prop.2612c&link_type=abstract
ATNF proposal C2121, Semester: October, 2009
Physics
Star Formation, Magellanic Clouds, Atca
Scientific paper
Despite significant progress in understanding the physics involved with the formation of single stars, we still only have crude ideas about why a giant molecular cloud (GMC) form clusters, distributed associations, or no stars at all. The key properties of GMCs displaying various intensities of star formation must be explored observationally in more detail. Two GMCs associated with the LMC HII region N159, N159-S and N159-W, have similar size and mass, but exhibit very different star formation activity as N159-S is paucity in stars and young stellar objects (YSOs) unlike its active neighbor N159-W. To examine whether N159-S may just start to form massive stars, or doesn't have that potential at all, we request 30 hours of 3mm HCO+ and HCN to map the CO core and 870um clumps. The observations will be used to study morphologies and spatial and mass distributions of dense gas clumps, to search for sites of massive YSOs at earliest evolutionary stage, and compare to the previous N159-W observations to assess whether N159-S can form YSOs as massive as O-type. This program will help us better understand the relation between GMCs and their star formation properties.
Chen Chang-Hui
Chu Y.-H. Y.-H.
Galametz Maud
Gruendl Robert
Heitsch Fabian
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