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Table 2

Image processing and results.

Band Central Wavelength Robust Beam shape rms Peak Flux density
freq. (GHz) (mm) (μJy beam−1) S/N (mJy)(a)
7 346.8 0.865 –0.2 0.″036 × 0.″028, PA = 73° 26 90 1542 ± 3 (± 150)
346.8 0.865 –1.0 0.″023 × 0.″018, PA = 86° 48 24 1517 ± 8 (± 150)
6 233.0 1.29 0.0 0.″036 × 0.″031, PA = −85° 9.5 135 575.4 ± 0.9 (± 30)
233.0 1.29 –1.0 0.″029 × 0.″025, PA = −84° 20 45 511 ± 3 (± 30)
4 145.0 2.07 –0.6(b) 0.″046 × 0.″039, PA = 46° 12 62 151.1 ± 0.9 (± 8)
145.0 2.07 –1.0 0.″045 × 0.″026, PA = 46° 17 34 143.8 ± 1.7 (± 8)
3 97.5 3.08 0.5 0.″052 × 0.″050, PA = −10° 4.5 164 59.8 ± 0.3 (± 3)
97.5 3.08 –1.0 0.″034 × 0.″033, PA = 74° 13 43 42.3 ± 1.3 (± 3)

Notes. (a) Uncertainties in parenthesis include the nominal 10% (for Band 7) and 5% (for Bands 6, 4, and 3) absolute calibration uncertainties for ALMA. (b)A robust valueof − 0.6 together with uv-tapering of 0.″03 × 0.″001 (PA = 136°) was used to produce a more circular beam.

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