Abstract
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 230 GHz 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 Dw 1, a 3-sigma upper limit of 40 mK for the CO J = 2→1 emission from the nucleus was obtained.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 899-903 |
| Number of pages | 5 |
| Journal | Astronomy and astrophysics |
| Volume | 324 |
| Issue number | 3 |
| State | Published - Aug 20 1997 |
| Externally published | Yes |
Keywords
- Galaxies: individual: Dw 1
- Galaxies: individual: Dw 2
- Radio lines: galaxies
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science