CO(4-3) and CO(3-2) studies of M51 and NGC 6946

Authors
Nieten, C Dumke, M Beck, R Wielebinski, R
Citation
C. Nieten et al., CO(4-3) and CO(3-2) studies of M51 and NGC 6946, ASTRON ASTR, 347(1), 1999, pp. L5-L8
Citations number
14
Categorie Soggetti
Space Sciences
Journal title
ASTRONOMY AND ASTROPHYSICS
ISSN journal
00046361 → ACNP
Volume
347
Issue
1
Year of publication
1999
Pages
L5 - L8
Database
ISI
SICI code
0004-6361(199907)347:1<L5:CACSOM>2.0.ZU;2-Z
Abstract
We have mapped several nearby galaxies in the CO(4-3) line transition with the Heinrich-Hertz-Telescope on Mt. Graham, Arizona, during an excellent we ather period in December 1998. Here we report on our observations of M51 an d NGC 6946. The results suggest a concentration of highly excited CO gas to the nuclei of these galaxies. Moreover, in both objects CO(4-3) line emiss ion was also detected for the first time in the spiral arms, several kilopa rsecs away from the centre.