4 papers
X-ray Chemistry in the Envelopes around Young Stellar Objects
P. Staeuber, A. O. Benz, S. D. Doty +1
We have studied the influence of X-rays from a massive young stellar object (YSO) on the chemistry of its own envelope by extending the models of Doty et al. (2002) and Staeuber et…
A submillimeter line survey of low-mass protostars: prelude to ALMA and Herschel
E. F. van Dishoeck, J. K. Joergensen, S. Maret +5
The results from a single-dish molecular line survey of a set of 18 deeply embedded young stellar objects are summarized. More than 40 lines from 16 different species were observed…
Processed and unprocessed ices in circumstellar disks
K. Pontoppidan, E. Dartois, W. -F. Thi +1
We present 3-5 micron VLT-ISAAC spectroscopy searching for evidence of methanol ices in edge-on disks of young embedded stars. Examples include the disks of L1489 IRS in Taurus and…
On the Feasibility of Disk Chemical Modeling
Dmitry Semenov, Yaroslav Pavluchenkov, Thomas Henning +2
In this paper, we compare the results of the modeling of a protoplanetary disk chemical evolution obtained with the UMIST95 and ``New Standard Model'' (NSM) chemical databases. Ass…