CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

The thermal state of molecular clouds in the Galactic center: evidence for non-photon-driven heating

Y. Ao ; C. Henkel ; K. M. Menten ; M.A. Requena-Torres ; T. Stanke ; R. Mauersberger ; Susanne Aalto (Institutionen för rymd- och geovetenskap, Radioastronomi och astrofysik) ; S. Mühle ; J. Mangum
Proceedings of the International Astronomical Union: Symposium S303 Vol. 9 (2014), p. 89-91.
[Konferensbidrag, övrigt]

We have used the Atacama Pathfinder Experiment (APEX) 12 m telescope at 218 GHz to observe molecular clouds simultaneously in the J_KA,Kc=3_03→2_02,3_22→2_21,and 3_21→2_20 transitions of para-H2CO to determine kinetic temperatures of the dense gas in the central molecular zone of the Galaxy. Gas kinetic temperatures for individual molecular clouds range from 55 to 125 K or even higher. The molecular clouds at high temperatures may be heated by turbulent dissipation and/or cosmic-rays

Nyckelord: Galaxy: center – interstellar medium: clouds – ISM: molecules – radio lines: ISM



Denna post skapades 2015-01-20. Senast ändrad 2015-06-18.
CPL Pubid: 211153

 

Läs direkt!


Länk till annan sajt (kan kräva inloggning)