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Table 1
Optical and X-ray observations of υ And, sorted by observation date.
| Instrument | MJD | Ca ii K residual | exp. SPI state |
|
|
|||
| FOCES (15 μ) | 55 014.12 | −0.05 ± 0.14 | − |
| FOCES (15 μ) | 55 015.12 | −0.03 ± 0.19 | − |
| FOCES (15 μ) | 55 016.12 | −0.05 ± 0.11 | − |
| FOCES (15 μ) | 55 017.12 | −0.01 ± 0.11 | − |
| FOCES (15 μ) | 55 018.12 | 0.10 ± 0.14 | − |
| FOCES (15 μ) | 55 020.13 | 0.36 ± 0.14 | − |
| FOCES (15 μ) | 55 021.13 | 0.07 ± 0.11 | − |
| FOCES (15 μ) | 55 022.13 | −0.03 ± 0.13 | − |
| FOCES (15 μ) | 55 023.13 | −0.39 ± 0.20 | − |
| FOCES (15 μ) | 55 024.14 | −0.24 ± 0.14 | − |
| FOCES (15 μ) | 55 025.13 | −0.13 ± 0.14 | − |
| FOCES (15 μ) | 55 027.13 | 0.36 ± 0.09 | − |
| FOCES (15 μ) | 55 028.13 | 0.37 ± 0.09 | − |
| FOCES (15 μ) | 55 029.12 | 0.27 ± 0.14 | − |
| HET/HRS | 55 049.37 | 0.50 ± 0.54 | − |
| HET/HRS | 55 083.27 | −0.05 ± 0.49 | − |
| HET/HRS | 55 090.25 | −0.76 ± 0.53 | − |
| FOCES (24 μ) | 55 096.19 | 0.03 ± 0.17 | − |
| FOCES (24 μ) | 55 099.20 | −0.08 ± 0.13 | − |
| FOCES (24 μ) | 55 100.20 | −0.05 ± 0.17 | − |
| FOCES (24 μ) | 55 105.21 | −0.02 ± 0.14 | − |
| FOCES (24 μ) | 55 107.20 | −0.01 ± 0.18 | − |
| FOCES (24 μ) | 55 108.17 | −0.01 ± 0.16 | − |
| FOCES (24 μ) | 55 109.17 | −0.08 ± 0.16 | − |
| FOCES (24 μ) | 55 110.19 | −0.17 ± 0.16 | − |
| HET/HRS | 55 110.44 | −1.10 ± 0.53 | − |
| Chandra ACIS-S | 55 124.72 | − | maximum |
| Chandra ACIS-S | 55 126.56 | − | minimum |
| Chandra ACIS-S | 55 131.29 | − | minimum |
| Chandra ACIS-S | 55 133.50 | − | maximum |
| HET/HRS | 55 135.12 | −0.22 ± 0.47 | − |
| HET/HRS | 55 139.34 | −0.43 ± 0.49 | − |
| HET/HRS | 55 141.33 | 0.72 ± 0.47 | − |
| HET/HRS | 55 142.35 | 1.00 ± 0.49 | − |
| HET/HRS | 55 146.33 | 0.35 ± 0.48 | − |
| FOCES (24 μ) | 55 169.00 | 0.13 ± 0.20 | − |
Notes. Integrated Ca ii K line residuals are given for optical data, but the absolute scales of FOCES and HRS data are not comparable (see text); extrapolated SPI state according to Shkolnik et al. (2005) given for X-ray data (see text).
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