Protostars and Planets VI, Heidelberg, July 15-20, 2013
Poster 1B061
High Mass Star Formation Revealed by Herschel PACS Spectroscopy
Kwon, Woojin (SRON Netherlands Institute for Space Research)
van der Tak, Floris (SRON Netherlands Institute for Space Research and Kapteyn Astronomical Institute, Univ. of Groningen)
Karska, Agata (Max Planck Institute for Extraterrestrial Physics and Leiden Observatory, Leiden Univ.)
Herczeg, Gregory (Kavli Institute for Astronomy and Astrophysics, Peking Univ.)
Braine, Jonathan (Univ. Bordeaux and CNRS)
Herpin, Fabrice (Univ. Bordeaux and CNRS)
Wyrowski, Friedrich (Max Planck Institute for Radio Astronomy)
van Dishoeck, Ewine (Leiden Observatory, Leiden Univ. and Max Planck Institute for Extraterrestrial Physics)
Abstract:
In the past few decades a big picture of low mass star formation
has successfully been drawn. However, high mass star formation is
little known yet, mainly due to its complexity, distance, and rarity.
The Photodetector Array Camera and Spectrometer (PACS) on-board the
Herschel Space Observatory (Herschel) has newly provided imaging
spectroscopy with unprecedented angular resolution and sensitivity
at far-infrared wavelengths. We present Herschel PACS data toward
10 high mass young stellar objects taken as part of the Water In
Star-forming regions with Herschel (WISH) key project. In contrast
to what has been thought, the preliminary results based on the
continuum and CO lines show that hot molecular cores seem to have
the highest extinction. It suggests that they are more deeply
embedded compared to massive protostellar objects and ultra compact
HII regions, which implies a very early stage of star formation.
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