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Synthetic observations of turbulent flows in diffuse multiphase interstellar medium

Published online by Cambridge University Press:  01 August 2006

Masako Yamada ,
H. Koyama ,
K. Omukai  and
S. Inutsuka
Masako Yamada*
Affiliation:
Department of Theoretical Astronomy, National Astronomical Observatory of Japan, Osawa2-21-1, Mitaka, Tokyo, JAPAN
H. Koyama
Affiliation:
Department of Earth and Planetary System Science, Kobe University
K. Omukai
Affiliation:
Department of Theoretical Astronomy, National Astronomical Observatory of Japan, Osawa2-21-1, Mitaka, Tokyo, JAPAN
S. Inutsuka
Affiliation:
Department of Physics, Kyoto University
*
†email: [email protected]
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Abstract

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We examined observational characteristics of multi-phase turbulent flows in the diffuse interstellar medium (ISM) by calculating atomic and molecular carbon lines. Radiation field maps of C+, C0, and CO line emissions were generated by calculating the non-local thermodynamic equilibrium (nonLTE) level populations and high resolution hydrodynamic simulations of diffuse ISM. By analyzing synthetic line emission, we found a high ratio between the lines of high- and low-excitation energies in the diffuse multi-phase interstellar medium. Our results shows that simultaneous observations of the lines of warm- and cold-gas tracers will be useful in examining the thermal structure, and hence the origin of diffuse interstellar clouds.

Keywords

turbulenceISM: lines and bandsradio lines: ISMline: formationinstabilities
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S237: Triggered Star Formation in a Turbulent ISM , August 2006 , pp. 499
Copyright
Copyright © International Astronomical Union 2007

References

Yamada, M. et al. submitted to Astrophysical Journal.Google Scholar