Computer Science
Scientific paper
Apr 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007atnf.prop..905h&link_type=abstract
ATNF proposal C1590, Semester: April, 2007
Computer Science
Galactic, Atca
Scientific paper
High mass star formation has so far not been very well understood, which is mostly due to observational difficulties. Since (sub)mm instruments like ATCA and APEX (and ALMA in the future) are opening up this frequency window in the southern hemisphere, we have started to study a large sample of high mass star forming regions with the APEX telescope (C.Hieret's PhD thesis) to study their excitation conditions, as well as chemical and kinematic properties. Having observed our four most promising sources with the most compact H75 ATCA configuration, we were able to determine their exact 3mm positions and sizes. Now we propose to resolve the cores with the H214 configuration (2" resolution), enabling us to further study the exciting morphologies such as binary cores, extended envelopes and offsets between different chemical tracers, which hint at a fragmentation of the hot cores. This work shows the great potential of combining the high excitation APEX data with the high spatial resolution ATCA data, as can be seen in the case of 16060-5146, where we were able to confirm with ATCA the binary nature of the core which we expected to find based on our APEX spectra.
Hieret Carolin Olivia
Leurini Silvia
Menten Karl
Ott Juergen
Schilke Peter
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