Synthetic observations of turbulent flows in diffuse multiphase interstellar medium

Masako Yamada; H. Koyama; K. Omukai; S. Inutsuka

doi:10.1017/S1743921307002876

Synthetic observations of turbulent flows in diffuse multiphase interstellar medium

Masako Yamada, H. Koyama, K. Omukai, S. Inutsuka

Research output: Contribution to journal › Article › peer-review

Abstract

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 ⁺, C ⁰, 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.

Original language	English
Pages (from-to)	499
Number of pages	1
Journal	Proceedings of the International Astronomical Union
Volume	2
Issue number	S237
DOIs	https://doi.org/10.1017/S1743921307002876
Publication status	Published - 2006 Aug
Externally published	Yes

Keywords

ISM: lines and bands
Instabilities
Line: formation
Radio lines: ISM
Turbulence

ASJC Scopus subject areas

Medicine (miscellaneous)
Astronomy and Astrophysics
Nutrition and Dietetics
Public Health, Environmental and Occupational Health
Space and Planetary Science

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1017/S1743921307002876

Cite this

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title = "Synthetic observations of turbulent flows in diffuse multiphase interstellar medium",

abstract = "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 +, C 0, 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 = "ISM: lines and bands, Instabilities, Line: formation, Radio lines: ISM, Turbulence",

author = "Masako Yamada and H. Koyama and K. Omukai and S. Inutsuka",

note = "Funding Information: This research was supported in part by Grant-in-Aid by the Ministry of Education, Science, and Culture of Japan (16204012, 18026008, 15740118, 16077202, 18540238). References",

year = "2006",

month = aug,

doi = "10.1017/S1743921307002876",

language = "English",

volume = "2",

pages = "499",

journal = "Proceedings of the International Astronomical Union",

issn = "1743-9213",

publisher = "Cambridge University Press",

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TY - JOUR

T1 - Synthetic observations of turbulent flows in diffuse multiphase interstellar medium

AU - Yamada, Masako

AU - Koyama, H.

AU - Omukai, K.

AU - Inutsuka, S.

N1 - Funding Information: This research was supported in part by Grant-in-Aid by the Ministry of Education, Science, and Culture of Japan (16204012, 18026008, 15740118, 16077202, 18540238). References

PY - 2006/8

Y1 - 2006/8

N2 - 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 +, C 0, 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.

AB - 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 +, C 0, 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.

KW - ISM: lines and bands

KW - Instabilities

KW - Line: formation

KW - Radio lines: ISM

KW - Turbulence

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DO - 10.1017/S1743921307002876

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SP - 499

JO - Proceedings of the International Astronomical Union

JF - Proceedings of the International Astronomical Union

IS - S237

ER -

Synthetic observations of turbulent flows in diffuse multiphase interstellar medium

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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