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Table 5
X-ray source properties for LTT 1445A.
| Chandra ACIS-S4 | |||
|---|---|---|---|
| 2021 | 2021 | 2023 | |
| Quiescent | Flare | All | |
| ObsID (PI) | 23377 (Brown) | 27882 (Howard) | |
| Exp. time (ks) | 12.2 | 6.66 | 29.75 |
| Source counts (ct) | 4.9 | 177 | 50 |
| Count rate (ct ks−1 ) | 0.4 ± 0.2 | 26.6 ± 2.0 | 1.68 ± 0.25 |
| X-ray flux (10−13 erg cm−2 s−1) | 0.066 ± 0.033 | 3.61 ± 0.27 | 0.51 ± 0.08 |
| Characteristic temperature (keV) | 0.5(a) | 1.02 ± 0.10 | 0.55 ± 0.20 |
| log10(LX) (erg s−1) |  |
27.31 ± 0.03 | 26.46 ± 0.04 |
Notes. Values from 2021 reproduced from Brown et al. (2022). Log fluxes calculated assuming stellar distance provided in Table 1. (a)We assume this temperature from the measurement from the elevated flux post-flare; it is in agreement with the 2023 observations.
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