Letter to the Editor
Revealing the environs of the remarkable southern hot core G327.3–0.6
1
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany e-mail: wyrowski@mpifr-bonn.mpg.de
2
European Southern Observatory, Alonso de Cordova 3107, Vitacura Casilla 19001, Santiago 19, Chile
3
Onsala Space Observatory, Chalmers University of Technology, 439 92 Onsala, Sweden
Received:
3
April
2006
Accepted:
9
May
2006
Aims.We present a submm study of the massive hot core G327.3-0.6 that constrains its physical parameters and environment.
Methods.The APEX telescope was used to image CO and 
emission, to
observe lines from other molecules toward a hot and a cold molecular
core, and to measure the continuum flux density of the hot core.
Results.In the 
line, two clumps were found, one associated
with the Hii region G327.3-0.5 and the other associated with the
hot core. An additional cold clump is found 30´´ (0.4 pc)
northeast of the hot core in bright emission. From the the
continuum data, we calculate a mass of 420 
and a size of
0.1 pc for the hot core. A new, more accurate position of the hot
core is reported, which allows the association of the core with a
bright mid-infrared source. The luminosity of the hot core is
estimated to be between 5 and 
.
Conclusions.This study revealed several different evolutionary stages of massive star formation in the G327.3-0.6 region.
Key words: ISM: individual objects: G327.3-0.6 / ISM: clouds / stars: formation / radio lines: ISM / submillimeter
© ESO, 2006