Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21730401b&link_type=abstract
American Astronomical Society, AAS Meeting #217, #304.01; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
We will present early results from a comprehensive study of 25 massive young stellar objects (MYSOs) at 24 GHz (13mm) utilizing the power of the new EVLA WIDAR correlator to simultaneously observe the ammonia ladder through (6,6), the 25GHz methanol ladder, SO2, HC5N, recombination lines, and continuum at an angular resolution of 10,000 AU. The selection criteria included: previous ammonia detections at (1,1) and (2,2), (sub)mm dust cores, a range of maser activity, and a range of 24micron luminosities and 8/24 micron colors. Together, the observed tracers provide the gas temperature, the frequency and strength of hot core emission, and the kinematics of cores, outflows, and ionized gas, all observed with a uniform sensitivity and resolution. With this wealth of data we aim to identify the best discriminators of MYSO evolutionary state, and ultimately better understand the process of massive star formation.
Brogan Crystal L.
Chandler Catherine
Cyganowski Claudia
Friesen Rachel
Hunter Thad
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