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GMC Collisions as T...
GMC Collisions as Triggers of Star Formation. V. Observational Signatures
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- Bisbas, T.G. (författare)
- University of Florida,Max-Planck-Institut für extraterrestrische Physik,Max Planck Institute for Extraterrestrial Physics
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- Tanaka, K.E.I. (författare)
- University of Florida
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- Tan, Jonathan (författare)
- National Astronomical Observatory of Japan,University of Florida
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- Wu, B. (författare)
- National Astronomical Observatory of Japan
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- Nakamura, F. (författare)
- National Astronomical Observatory of Japan
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(creator_code:org_t)
- 2017-11-14
- 2017
- Engelska.
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Ingår i: Astrophysical Journal. - : American Astronomical Society. - 1538-4357 .- 0004-637X. ; 850:1, s. 23-32
- Relaterad länk:
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http://arxiv.org/pdf...
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https://doi.org/10.3...
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https://research.cha...
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Abstract
Ämnesord
Stäng
- © 2017. The American Astronomical Society. All rights reserved.. We present calculations of molecular, atomic, and ionic line emission from simulations of giant molecular cloud (GMC) collisions. We post-process snapshots of the magnetohydrodynamical simulations presented in an earlier paper in this series by Wu et al. of colliding and non-colliding GMCs. Using photodissociation region (PDR) chemistry and radiative transfer, we calculate the level populations and emission properties of the transitions of 12 CO J = 1-0, [C i] at 609 μm, [C ii] 158 μm, and [O i] at 63 μm. From emission maps of integrated intensity and position-velocity diagrams, we find that fine-structure lines, particularly [C ii] 158 μm, can be used as a diagnostic tracer for cloud-cloud collision activity. These results hold even in more evolved systems in which the collision signature in molecular lines has been diminished.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Nyckelord
- magnetic fields - ISM
- clouds - ISM
- ISM
- structure - methods
- numerical
- lines and bands - ISM
- kinematics and dynamics - ISM
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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