A non-local model of line emission from molecular clouds

Glasse, Alistair C. H.

doi:10.1007/BFb0119506

Alistair C. H. Glasse¹

Part of the book series: Lecture Notes in Physics ((LNP,volume 331))

139 Accesses

Abstract

A technique developed by Scharmer & Carlsson for finding accurate solutions to the multi-level line transfer problem in the presence of velocity fields has been adapted for modelling the submillimetre emission spectra of molecular clouds. Line profiles for transitions up to J=20−19 in CO and J=5−4 in HCO⁺ can be modelled for slab or spherically symmetric atmospheres exhibiting spatial variations in temperature, density and bulk velocity. The technique is used to reproduce the published observed profiles of HCO⁺, CO and its isotopes, using a single physical model of the Bok globule B335.

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

Log in via an institution

Institutional subscriptions

References

Avrett, E.H., Loeser, R., in ‘Methods in Radiative Transfer’, C.U.P., ed. Kalkoffen, 341.
Google Scholar
Draine, B.T., Roberge, W.G. 1984, Ap. J., 282, 491.
Article ADS Google Scholar
Flower, D.R., Launay, J.M. 1985, M.N.R.A.S., 214, 271.
ADS Google Scholar
Frerking, M.A., Langer, W.D., Wilson, R.W. 1987, Ap. J., 313, 320.
Article ADS Google Scholar
Glassgold, A.E., Huggins, P.J., Langer, W.D. 1985, Ap. J., 290, 615.
Article ADS Google Scholar
Goldreich, P., Kwan, J., 1974, Ap. J., 189, 441.
Article ADS Google Scholar
Monteiro, T.S., 1985, M.N.R.A.S. 214, 419.
ADS Google Scholar
Scharmer, G.B., Carlsson, M. 1985, Journal of Comp. Phys., 59, 56.
Article ADS MATH Google Scholar
Schönberg, K., 1988, Astron. Astrophys., 195, 198.
ADS Google Scholar
Schönberg, K., Hempe, K., 1986, Astron. Astrophys., 163, 151.
ADS Google Scholar
Scoville, N.Z., Solomon, P.M., Ap. J. Letters, 187, L67.
Google Scholar
Viscuso, P.J., Chernoff, D.F., 1988, Ap. J., 327, 364.
Article ADS Google Scholar

Download references

Author information

Authors and Affiliations

Astrophysics Division, ESTEC, 2200AG, Noordwijk, The Netherlands
Alistair C. H. Glasse

Authors

Alistair C. H. Glasse
View author publications
You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

Copyright information

About this paper

Cite this paper

Glasse, A.C.H. (1989). A non-local model of line emission from molecular clouds. In: The Physics and Chemistry of Interstellar Molecular Clouds: mm and Sub-mm Observations in Astrophysics. Lecture Notes in Physics, vol 331. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0119506

Download citation

DOI: https://doi.org/10.1007/BFb0119506
Published: 01 May 2008
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-51297-4
Online ISBN: 978-3-540-46187-6
eBook Packages: Springer Book Archive

Publish with us

Policies and ethics