Table C.2.
ALCHEMI tunings with discrepant amplitude calibration
| SGa | Array | Flux Calibrators | SpixAgeb |  c |
aid |
|---|---|---|---|---|---|
| B7d | 7m | J2258−2758,J0006−0623,J0522−3627 | (3,-4,20),(-4,20),20 | 9.98 | 1.257 |
| B3b | 12mE | J2258−2758 | 142,144 | 0.86 | 0.789 |
| B7h | 7m | J2258−2758,J2253+1608,J0522−3627 | (3,4),25,4 | 9.87 | 0.833 |
| B6f | 7m | J2253+1608 | -1,0,6 | 1.98 | 0.867 |
| B3d | 12mE | J0006−0623 | 7 | 1.57 | 1.128 |
| B3a | 12mE | J0006−0623 | -5,4 | 0.05,0.68 | 1.108 |
| B3c | 12mE | J0006−0623 | -3,-6,0,1 | 0.48 | 1.107 |
| B7o | 7m | J2253+1608,J0522−3627 | (7,0,2,3),2 | 2.06 | 0.922 |
| B3f | 12mE | J2258−2758,J2357−5311,J0006−0623 | -27,-22,4 | 1.84 | 0.922 |
| B6h | 7m | J2258−2758 | 5,-3,0,-2 | 3.71,1.03,1.20,4.30 | 0.924 |
| B3a | 12mC | J0006−0623 | 23,27 | 0.24 | 0.937 |
Notes.
Number of days since the most recent ALMA-derived spectral index for a given calibrator. Multiple executions which used a given calibrator are grouped within parentheses. Negative values indicate spectral indices derived before a given calibrator measurement. Calibrator spectral indices are derived using measured Band 3 and Band 6 or Band 7 fluxes.
Normalized gain calibrator flux uncertainty averaged over all gain calibrator measurements for observation dates within five days. Multiple entries indicate multiple observation time ranges. Target for all gain calibration measurements was J0038−2459.
Amplitude scale factors are applied to the data as indicated by Equation 3.
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