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Home All issues Volume 542 (June 2012) A&A, 542 (2012) L19 Full HTML

Table A.1

Observed lines and corresponding telescope parameters for the APEX observations of W28F.

Line CO (3–2) CO (4–3) CO (6–5) CO (7–6) 13CO (3–2)
ν (GHz) 345.796 461.041 691.473 806.652 330.588
FWHM (″) 18.1 13.5 9.0 7.7 18.9
Sampling (″) 10 7 4 4 10
Receiver HET345 FLASH460 CHAMP+ CHAMP+ HET345
Observing days 04–05/08 04/06 13-14-15/08 13-14-15/08 05-06-07/08
Feff 0.97 0.95 0.95 0.95 0.97
Beff 0.73 0.60 0.52 0.49 0.73
Tsys (K) 279–288 372–439 1330–1722 3524–5850 357–377
Δν (km s-1) 0.106 0.318 0.079 0.068 0.166
Reference offset (″) (–100, –50) (–120, 0)a (–100, –50) (–100, –50) (–100, –50)b
ν interval (km s-1) –30/40 –30/40 –30/40 –10/25 –30/40

Notes. 

(a)

The observations were carried out with this off position, and were corrected a posteriori from its potential contamination, by means of an off spectrum on the (–120, 0) position taken with an off position at (–240, 0).

(b)

The observations were carried out with this off position, and were corrected a posteriori from its potential contamination, by means of an off spectrum on the (–100, –50) position taken with an off position at (1000, 1000).

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