Table 4
ALMA measurements of quasars used for absolute photometric calibration factor calculation.
| ALMA Band 3 | ALMA Band 7 | Interpolation | CONCERTO | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Quasars | Observation Date | Flux Density (Jy) | Observation Date | Flux Density (Jy) | αQSO (Jy) | HF (Jy) | LF (Jy) | HF (Hz) | LF (Hz) |
| J2253+1608 | 2021-06-22 | 5.25 | 2021-06-22 | 1.91 | –0.78 | 2.32 | 2.61 | 47.6 | 73.6 |
| J2258-2758 | 2021-06-22 | 2.27 | 2021-06-22 | 0.95 | –0.74 | 1.14 | 1.28 | 22.4 | 36.1 |
| J0319+4130 | 2021-06-22 | 15.3 | 2021-06-22 | 5.72 | –0.75 | 6.91 | 7.76 | 137.5 | 214.7 |
| J1256-0547 | 2021-08-27 | 19.1 | 2021-08-28 | 8.68 | –0.59 | 10.18 | 11.16 | 212.1 | 304.3 |
| J1337-1257 | 2021-08-27 | 2.97 | 2021-08-28 | 1.39 | –0.64 | 1.65 | 1.82 | 31.9 | 47.3 |
| J1751+0939 | 2021-08-27 | 1.99 | 2021-08-26 | 1.1 | –0.50 | 1.26 | 1.36 | 25.3 | 37.0 |
| J1924-2914 | 2021-08-27 | 5.59 | 2021-08-28 | 2.51 | –0.61 | 2.95 | 3.24 | 61.9 | 92.4 |
| J1058+0133 | 2021-10-13 | 3.58 | 2021-10-14 | 1.88 | –0.49 | 2.14 | 2.31 | 39.2 | 55.9 |
| J0854+2006 | 2021-11-07 | 7.38 | 2021-11-07 | 3.93 | –0.48 | 4.47 | 4.81 | 86.6 | 117.4 |
| J0522-3627 | 2022-04-19 | 10.1 | 2022-04-19 | 7.12 | –0.30 | 7.67 | 8.02 | 136.8 | 196.2 |
| J0433+0521 | 2022-04-21 | 3.67 | 2022-04-21 | 1.77 | –0.61 | 2.09 | 2.29 | 36.0 | 54.0 |
| J0210-5101 | 2022-06-30 | 1.42 | 2022-06-30 | 0.62 | –0.70 | 0.74 | 0.82 | 14.4 | 21.6 |
| J0538-4405 | 2022-07-02 | 4.99 | 2022-07-01 | 2.84 | –0.47 | 3.22 | 3.47 | 62.1 | 85.6 |
| J0423-0120 | 2022-08-31 | 5.95 | 2022-09-01 | 3.11 | –0.54 | 3.60 | 3.91 | 69.5 | 98.2 |
Notes. For some quasars (J1256-0547, J1058+0133, J0854+2006, J0538-4405, J1337-1257, and J0522-3627), several ALMA observation pairs observed at different months are used, but we only show one pair as an example here. The third and fourth columns show the flux density measured by ALMA. The fifth column is the slope (αQSO) of the quasar power-law spectrum (SQSO(V) ∝ Vαso). The seventh and eighth columns present the interpolation of ALMA measurements to CONCERTO (given at the Uranus effective frequencies). The last two columns give the flux density measured by CONCERTO pointing scans, also corrected to Uranus effective frequencies for HF and LF, respectively.
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