1997/09/30 by R. P. J. Tilanus, W. B. Burton
Physics and Astronomy · #astro-ph
published as Astronomy & Astrophysics, 1997, 324, 899 · 5 pages, 3 Postscript figures, uses laa.sty also online version at http://www.jach.hawaii.edu/~rpt/pubs.html
arxiv created 1997/09/30 · arxiv updated 2009/12/01
We present an exploratory survey of the central regions of the nearby spiral galaxies Dwingeloo 1 and Dwingeloo 2 made in the CO J=2->1 line at 230GHz using the James Clerk Maxwell Telescope. In Dwingeloo 1, which is probably the nearest grand-design barred spiral, the CO emission was sampled along a cross with its major axis aligned with the bar. The CO emission is an order of magnitude weaker (peak Tmb=~70mK) than in its neighbours IC 342 and Maffei 2 and appears to be confined to the nucleus, bar, and spiral arms. In Dwingeloo 2, a small system quite likely to be a companion of Dw1, a 3-sigma upper limit of 40mK for the CO J=2->1 emission from the nucleus was obtained.