Protostars and Planets VI, Heidelberg, July 15-20, 2013
The HIFI spectral survey of massive star-forming region AFGL 2591
Kazmierczak, Maja (SRON Netherlands Institute for Space Research, Landleven 12, 9747 AD Groningen, The Netherlands)
van der Tak, Floris (SRON & Kapteyn Astronomical Institute, University of Groningen, PO Box 800, 9700 AV, Groningen, The Netherlands)
Helmich, Frank (SRON & Kapteyn Astronomical Institute, University of Groningen, PO Box 800, 9700 AV, Groningen, The Netherlands)
Chvarria, Luis (Centro de Astrobiologia (CSIC-INTA), Laboratorio de Astrofisica Molecular, Carretera de Ajalvir, Km 4. Torrejon de Ardoz, 28850 Madrid, Spain)
Wang, Kuo-Song (Leiden Observatory, Leiden University, PO Box 9513, 2300 RA, Leiden, The Netherlands)
Ceccarelli, Cecilia (UJF-Grenoble 1/CNRS-INSU, Institut de Planetologie et d\'Astrophysique de Grenoble (IPAG) UMR 5274, Grenoble, France)
AFGL 2591 is a massive protostellar object with a bipolar outflow. It has been widely studied before since it is a relatively isolated and nearby star-forming region.
Here we present an overview of the Herschel/HIFI spectral survey, as a part of CHESS Key Project. The survey covers a frequency range from 480 up to 1240 GHz as well as some particular lines from 1267 to 1901 GHz.
From the spectral survey a total of 32 species were identified. The data analysis is divided into various families of molecules, eg. CO and its isotopologues, nitrogen-bearing molecules, sulfur-bearing species, organic molecules.
We will discuss different types of observed molecules and their physical parameters.
The radial abundance profiles of some molecules will be presented to learn about the chemical processes leading to their formation and destruction.
One of the studied molecule is ammonia, which is concentrated in the inner part of the protostellar envelope (when T > 100K i.e. where water ice evaporates), with the abundance of 3x10e-7.
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