Table 1
Millimeter molecular line observations of CB 26(a) and summary of observing parameters.
| Line | Frequ. [GHz] | Tel. | Year | uv radius range [m] | Bandw. [km s−1] | ∆υchan [km s−1] | Primary HPBW [arcsec] | Synthesized HPBW (PA) [arcsec (deg)] | 1σ rms [mJy beam−1] |
|---|---|---|---|---|---|---|---|---|---|
| 12CO(2–1) | 230.538 | PdBI(a) | 2005,2009 | 18 (b)–753 | 14 | 0.20 | 21.9 | 0.53 × 0.47 (6.9)(c) | 8 |
| 13CO(1–0) | 110.201 | OVRO | 2001 | 12-478 | 4.8 | 0.15 | 45.7 | 1.20 × 0.88 (91.7) | 35 |
| HCO+ (1–0) | 89.189 | PdBI(a) | 2005 | 17 (b)–175 | 12.8 | 0.20 | 56.5 | 3.74 × 3.38 (100.3) | 7 |
| H13CO+ (1–0) | 86.754 | PdBI (a) | 2008,2009 | 20 (b)–175 | 7 | 0.50 | 58.1 | 4.09 × 2.26 (114.6) | 5 |
| HCO+ (3–2) | 267.558 | SMA | 2006 | 11–192 | 29 | 0.23 | 18.8 | 1.37 × 1.34 (39.0) | 150 |
Notes. (a)The phase center was at α2000 = 04h59m50.74s, δ2000 = 52°04′43.80″. (b)Plus zero-spacing observations with the IRAM 30m telescope (see Sect. 2.2). (c)Natural uv-weighting. We also produced maps with robust uv-weighting (HPBW 0.48 × 0.42″) and a tapered (smoothed) map (HPBW 1.08 × 0.92″, see Sect. 3.3).
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