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Table 1

Parameters of 13CO, 12CO, and Ci observations

Transitions Date Receiver ηmb ηf Jy/K pwv Tsys Map size Obs. modea
(mm) (K) (RA × Dec)
13COJ = 3 → 2 2006-Jul.-23 APEX2A 0.73 0.97 40 1.1 190 ··· 210 central pointb ON-OFF
2009-Oct.-16 APEX2A 0.73 0.97 40 1.3 500 ··· 700 central point ON-OFF
12COJ = 3 → 2 2006-Jun.-27 APEX2A 0.73 0.97 41 1.1 150 ··· 160 central point ON-OFF
2006-Jul.-23 APEX2A 0.73 0.97 41 1.1 180 ··· 220 40″ × 40″ RASTER
2007-Jun.-30 APEX2A 0.73 0.97 41 1.1 230 ··· 250 40″ × 25″ RASTER
2008-Dec.-26 APEX2A 0.73 0.97 41 1.1 300 ··· 345 central point ON-OFF
2009-Oct.-16 APEX2A 0.73 0.97 41 1.1 440 ··· 450 central point ON-OFF
2010-Jul.-14 FLASH345 0.73 0.97 41 0.6 190 ··· 210 20″ × 30″ RASTER
2010-Nov.-15 FLASH345 0.73 0.97 41 1.5 350 ··· 380 central point ON-OFF
12COJ = 4 → 3 2009-Jun.-07 FLASH460 0.60 0.95 48 0.60 500 ··· 600 30″ × 40″ RASTER
12COJ = 6 → 5 2009-Jun.-13 CHAMP+-I 0.52 0.95 53 0.52 1500 ··· 2100 80″ × 60″ OTF
2009-Aug.-10 CHAMP+-I 0.52 0.95 53 0.27 1000 ··· 1300 80″ × 60″ OTF
12COJ = 7 → 6 2009-Jun.-13 CHAMP+-II 0.49 0.95 70 0.49 4000 ··· 9000 80″ × 60″ OTF
2009-Aug.-10 CHAMP+-II 0.49 0.95 70 0.49 2500 ··· 4000 80″ × 60″ OTF
Ci 1→0 2010-Jul.-14 FLASH460 0.60 0.95 50 0.60 700 ··· 1000 15″ × 25″ ON-OFF

Notes.

(a)

ON-OFF: position switching; RASTER: raster scan; OTF: On-The-Fly scan.

(b)

We adopt α(J2000) = 14h13m10.0s, δ(J2000) = −65°20′21.″0 as the central position of Circinus.

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