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Table 4.
Best-fit parameters of the spectral analysis of the X-ray observations of Y Gem for each available epoch.
| Parameter | Units | 2013.96 | 2014.25 | 2014.84 | 2015.74 | 2015.75 | 2015.81 |
|---|---|---|---|---|---|---|---|
| χ2/d.o.f. | 83.39/50 = 1.67 | 54.01/43 = 1.25 | 170.66/161 = 1.06 | 170.66/161 = 1.06 | 170.66/161 = 1.06 | 170.66/161 = 1.06 | |
| NH1 | 1022 cm−2 | ... | 0.1 ± 0.08 | 0.42 ± 0.23 | 0.50 ± 0.08 | 0.51 ± 0.07 | 0.41 ± 0.14 |
| kT1 | keV | ... | 0.03 ± 0.01 | 0.09 ± 0.04 | 0.04 ± 0.01 | 0.03 ± 0.01 | 0.04 ± 0.01 |
| A1 | cm−5 | ... | 14.1 ± 0.2 | (5.7 ± 2.2)×10−3 | 34.6 ± 2.9 | 72.4 ± 6.9 | 1.8 ± 0.3 |
| fX1 | erg cm−2 s−1 | ... | (3.5 ± 0.4)×10−13 | (3.8 ± 1.4)×10−14 | (2.8 ± 0.3)×10−14 | (2.3 ± 0.2)×10−14 | (1.9 ± 0.3)×10−14 |
| FX1 | erg cm−2 s−1 | ... | (5.3 ± 0.1)×10−12 | (1.9 ± 0.8)×10−12 | (1.6 ± 0.1)×10−10 | (1.8 ± 0.2)×10−10 | (2.4 ± 0.4)×10−14 |
| kT2 | keV | ... | ... | 0.16 ± 0.01 | 0.21 ± 0.01 | 0.20 ± 0.02 | 0.20 ± 0.01 |
| A2 | cm−5 | ... | ... | (5.5 ± 5.2)×10−4 | (1.5 ± 0.8)×10−4 | (2.4 ± 1.0)×10−4 | (1.3±0.8)×10−4 |
| fX2 | erg cm−2 s−1 | ... | ... | (3.6 ± 3.4)×10−14 | (1.5 ± 0.8)×10−14 | (1.8 ± 0.7)×10−14 | (1.5±1.3)×10−14 |
| FX2 | erg cm−2 s−1 | ... | ... | (6.4 ± 6.3)×10−13 | (3.1 ± 1.6)×10−13 | (4.7 ± 1.8)×10−13 | (2.5±1.5)×10−13 |
| NH2 | 1022 cm−2 | 7.5 ± 0.6 | 5.6 ± 0.6 | 37.8 ± 8.2 | 19.7 ± 1.22 | 24.8 ± 1.8 | 12.7 ± 0.8 |
| CF | 0.990 | 0.980 ± 0.10 | 0.990 ± 0.003 | 0.990 ± 0.002 | 0.990 ± 0.003 | 0.990±0.002 | |
| kT3 | keV | 29.3 ± 15.3 | 10.5 ± 1.9 | 15.3 ± 4.4 | 10.0 ± 1.1 | 16.9 ± 4.0 | 11.3 ± 1.4 |
| A3 | cm−5 | (3.4 ± 0.4)×10−3 | (5.8 ± 0.9)×10−3 | (5.6 ± 0.6)×10−3 | (2.7 ± 0.3)×10−3 | (1.9 ± 0.2)×10−3 | (3.1 ± 0.2)×10−3 |
| fX3 | erg cm−2 s−1 | (3.3 ± 0.4)×10−12 | (6.1 ± 0.9)×10−12 | (2.5 ± 0.3)×10−12 | (1.7 ± 0.2)×10−12 | (1.1 ± 0.1)×10−12 | (2.4 ± 0.2)×10−12 |
| FX3 | erg cm−2 s−1 | (6.8 ± 0.8)×10−12 | (1.2 ± 0.2)×10−11 | (1.2 ± 0.1)×10−11 | (5.7 ± 0.7)×10−12 | (4.1 ± 0.3)×10−12 | (6.6 ± 0.5)×10−12 |
| Reflection | |||||||
| Aref | cm−5 | 1.10 ± 0.5 | 6.6 ± 1.2 | 7.0 ± 1.1 | 1.5 ± 0.3 | 1.4 ± 0.3 | 1.1 ± 0.3 |
| fref | erg cm−2 s−1 | (5.4 ± 2.2)×10−13 | (3.5 ± 0.6)×10−12 | (1.8 ± 0.3)×10−12 | (5.4 ± 0.8)×10−13 | (4.1 ± 1.1)×10−13 | (4.6 ± 1.2)×10−13 |
| Fref | erg cm−2 s−1 | (7.5 ± 3.7)×10−12 | (4.5 ± 0.7)×10−12 | (4.7 ± 0.7)×10−12 | (1.0 ± 0.2)×10−12 | (9.1 ± 2.3)×10−13 | (7.5 ± 1.9)×10−13 |
| fX, TOT | erg cm−2 s−1 | (3.9 ± 0.6)×10−12 | (9.8 ± 1.5)×10−12 | (4.4 ± 0.6)×10−12 | (2.2 ± 0.4)×10−12 | (1.6 ± 0.2)×10−12 | (2.9 ± 0.3)×10−12 |
| FX, TOT | erg cm−2 s−1 | (7.5 ± 1.2)×10−12 | (2.2 ± 0.2)×10−11 | (1.9 ± 0.2)×10−11 | (1.6 ± 0.1)×10−10 | (1.9 ± 0.1)×10−10 | (3.2 ± 0.5)×10−11 |
| LX, TOT | erg s−1 | (3.7 ± 0.6)×1032 | (1.1 ± 0.1)×1033 | (9.4 ± 1.6)×1032 | (7.9 ± 0.5)×1033 | (9.3 ± 0.5)×1033 | (1.6 ± 0.3)×1033 |
Notes. The observed (fX) and unabsorbed (FX) fluxes were computed for the 0.3–10.0 keV energy range. The value of CF for the 2013.96 X-ray spectrum in the third column in boldface was fixed.
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