Simulated [CII] Observations for SPICA/SAFARI
LERMA/LRA - UMR 8112 - ENS Paris, 24 rue Lhomond 75231 Paris CEDEX 05, France
2 LUTH - UMR 8102 - Observatoire de Paris-Meudon, 5 place Jules Janssen, 92195 Meudon CEDEX, France
3 Centro de Astrobiología, CSIC-INTA - Madrid, Spain
We investigate the case of [CII] 158μm observations for SPICA/SAFARI using a three-dimensional magnetohydrodynamical (MHD) simulation of the diffuse interstellar medium (ISM) and the Meudon PDR code. The MHD simulation consists of two converging ﬂows of warm gas (104 K) within a cubic box 50 pc in length. The interplay of thermal instability, magnetic ﬁeld and self-gravity leads to the formation of cold, dense clumps within a warm, turbulent interclump medium. We sample several clumps along a line of sight through the simulated cube and use them as input density proﬁles in the Meudon PDR code. This allows us to derive intensity predictions for the [CII] 158μm line and provide time estimates for the mapping of a given sky area.
Key words: Galaxies: formation / Stars: formation / Missions: SPICA
© Owned by the authors, published by EDP Sciences, 2009