Cepa, J.; Beckman, J. E.; Knapen, J. H.; Nakai, N.; Kuno, N.
Bibliographical reference
Astronomical Journal (ISSN 0004-6256), vol. 103, Feb. 1992, p. 429-435, 683. Research supported by DGICYT and EEC.
Advertised on:
2
1992
Citations
17
Refereed citations
16
Description
Several positions in the southern spiral arm and the interarm disk of
NGC 4321 have been observed in CO (J = 1 to 0) using the NRO 45 m
telescope at Nobeyama, Japan. The analysis shows evidence for streaming
motions in the arms, together with an exponential radial decrease of
both the integrated CO emission and the velocity width at the observed
positions, with comparable scale lengths. The arm/interarm contrast
ratio of CO integrated emission shows values ranging from less than one
to four.