The first ISO workshop on analytical spectroscopy with SWS, LWS, PHT-S and CAM-CVF

(Oct 6-8, 1997, Madrid, Spain)

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Gas-phase molecular spectroscopy of young stellar objects

C.M. Wright 1 - E.F. van Dishoeck 1 - W.F. Thi 1 - F.P. Helmich 2 - F. Lahuis 3 - A. Boogert 4 - Th. de Graauw 4

1. Leiden Observatory, PO Box 9513, 2333 RA Leiden, The Netherlands -
2. SRON, Sorbonnelaan 2, 3584 CA Utrecht, The Netherlands -
3. ISO Science Operations Center, Astrophysics Division of ESA, VILSPA, E28080, Madrid, Spain -
4. SRON, PO Box 800, 9700 AV Groningen, The Netherlands

We present new results from our ISO-SWS spectroscopy program to search for gas-phase molecular absorption lines along the line of sight to massive protostars. Species detected include H2O, CO2, CH4, C2H2 and HCN (see also Lahuis et al., this workshop). We discuss the construction of model spectra and comment on the availability of basic molecular data. The resulting abundances will be compared with a variety of chemical models (time-dependent gas-phase chemistry, gas-grain chemistry, hot core chemistry).

Postscript version