The thermal state of molecular clouds in the Galactic center: evidence for non-photon-driven heating
Artikel i vetenskaplig tidskrift, 2014
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
Galaxy: center – interstellar medium: clouds – ISM: molecules – radio lines: ISM
Författare
Y. Ao
MPIfR
National Astronomical Observatory of Japan
Chinese Academy of Sciences
C. Henkel
MPIfR
King Abdulaziz University
K. M. Menten
MPIfR
M. A. Requena-Torres
MPIfR
T. Stanke
European Southern Observatory (ESO)
R. Mauersberger
Atacama Large Millimeter-submillimeter Array (ALMA)
Susanne Aalto
Chalmers, Rymd- och geovetenskap, Radioastronomi och astrofysik
S. Muhle
Universität Bonn
J. G. Mangum
National Radio Astronomy Observatory
Proceedings of the International Astronomical Union
1743-9213 (ISSN) 1743-9221 (eISSN)
Vol. 9 S303 89-91Ämneskategorier
Astronomi, astrofysik och kosmologi
Fundament
Grundläggande vetenskaper
Infrastruktur
Onsala rymdobservatorium
DOI
10.1017/S1743921314000234