Table 2.
IRAC Flux Correction Coefficients
| Coeffcient Name | 2013 Dec 10 | 2014 June 2 | 2014 June 17 | 2014 July 4 | 2016 July 12 | 2016 July 18 | 2017 July 15 | 2017 July 25 |
|---|---|---|---|---|---|---|---|---|
| a | 7537.1 | 5358.9 | 3693.5 | 6684.6 | −877.31 | 4748.0 | 4555.274 | 6938.5 |
| b | −17216 | −1336.0 | 3173.4 | −9461.1 | −22340 | 27.372 | −4669.305 | 15146.3 |
| c | 3730.1 | −2696.0 | 1679.9 | −12401 | −12402 | −2525.2 | −4963.178 | 13822.1 |
| d | −11716 | −6104.9 | 9248.1 | 9199.4 | −6054.6 | −9.3296 | −102.5009 | 14876.4 |
| e | 3396.5 | −1074.1 | 7629.8 | 5026.4 | 9508.4 | −5798.4 | −3444.561 | 2254.8 |
| f | −3025.0 | −760.80 | 16120 | 15750 | 10070 | 391.47 | 5618.444 | 23499.7 |
| g1 | 0.0054 | 0.3611 | −0.0049 | 0.1732 | 0.3128 | −0.0004 | 0.05112 | 0.05934 |
| g2 | −0.0451 | −0.2359 | 0.1518 | −0.2194 | 0.3267 | 0.4427 | 0.03646 | −0.1593 |
| g3 | −0.0007 | 0.1785 | 0.0344 | −0.2423 | 0.1124 | −0.1267 | 0.06231 | 0.1074 |
| g4 | 0.04063 | −0.2422 | 0.1685 | 0.1462 | 0.0672 | −0.2089 | 0.05674 | −0.02738 |
| h1 | 0.2897 | −0.7424 | −0.2675 | −0.5568 | 1.3735 | −0.2927 | 0.4828 | 0.1101 |
| h2 | 1.338 | 0.5666 | −0.4242 | 0.9940 | 1.1245 | −0.7833 | 0.8234 | 0.8551 |
| h3 | 0.1075 | −0.6004 | 0.4291 | 0.9720 | 1.0763 | 1.5937 | 0.1941 | −1.3753 |
| h4 | 0.4762 | 1.1260 | −0.6078 | −0.2426 | 0.9778 | 1.1396 | 0.6042 | −0.9479 |
| K1 | 0.0679 | −0.7136 | 0.6420 | −0.5358 | 0.0466 | −1.0620 | −0.0834 | −0.0098 |
| K2 | 0.1133 | 0.8440 | −0.7912 | 0.9836 | −0.1290 | −1.0258 | −1.3781 | −1.0708 |
| K3 | −0.3432 | −0.2633 | −0.1390 | 1.6669 | −0.0074 | −0.3891 | 0.1371 | 0.3808 |
| K4 | −0.0905 | 0.5196 | −0.3543 | −0.3662 | −0.0981 | 0.9668 | 1.0882 | 0.6798 |
Note. This table refers to the coefficients defined in Equation (1). For coefficients g, h, and k, the subscripts n = 1 to 4 refer to neighboring pixels in the order (15,16), (17,16), (16,15), and (16,17).