3 papers
astro-ph2003
Sulphur chemistry in the envelopes of massive young stars
F. F. S. van der Tak, A. M. S. Boonman, R. Braakman +1
The sulphur chemistry in nine regions in the earliest stages of high-mass star formation is studied through single-dish submillimeter spectroscopy. The line profiles indicate that…
astro-ph2002
Sulphur chemistry in the envelopes of massive young stars
F. F. S. van der Tak, A. M. S. Boonman, R. Braakman +1
We present submillimeter observations of SO, SO2, H2S, H2CS, OCS, NS and HCS+ toward nine massive young stars. The outflow contributes ~50% to the SO and SO2 emission in 15-20'' be…
astro-ph2000
Infrared Observations of Hot Gas and Cold Ice toward the Low Mass Protostar Elias 29
A. C. A. Boogert, A. G. G. M. Tielens, C. Ceccarelli +5
We have obtained the full 1-200 um spectrum of the low luminosity (36 Lsun) Class I protostar Elias 29 in the Rho Ophiuchi molecular cloud. It provides a unique opportunity to stud…