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Table 1

Statistics from observing strategy baseline v3.2 in the four LSST filters: r, i, z, and y.

Systems individually well-observed in 4 bands (4 sets) Systems well-observed in all 4 bands (intersection of the 4 sets)


Bands r i z y r i z y
Good systems 13.0% 14.0% 12.2% 9.8% 6.2%

Avg no. of epochs 21.4 21.6 20.8 19.9 24.9 26.1 24.2 22.3

Cadence mean & median (days) 7.3 &4.0 7.6&5.0 8.4&5.7 11.6 & 5.8 6.7 & 4.0 6.7 & 4.8 7.6&5.0 10.8 & 5.0

Largest gap mean & median (days) 28.3 & 24.9 27.9 & 23.9 29.1 & 25.8 33.3 & 28.9 24.5 & 23.0 23.9 & 21.9 25.9 & 23.9 31.6 & 28.8

Mean m5 23.9 23.3 22.7 21.9 same as in the individual 4 sets corresponding to 4 bands

Notes. We have a set of ‘good systems’ that meet the criteria for ‘good observation’, as described in Section 3.3, for each of these four filters. The table is divided into two parts, each with four columns. The left part presents various statistics, derived from the observing strategy, considering these four sets of systems well observed in the four bands. The right half presents the same statistics but for the systems well observed in all four bands, i.e., for the intersection of the four sets. For example, the left part of the second row shows the fraction of unresolved systems that would be well observed in different bands, whereas the right part indicates that 6.2% of the systems will be well observed in all four bands. Note that, in comparison, ~40% of the total resolved systems will be detected due to season gaps in the baseline observing strategy (Huber et al. 2019). The next three rows present the average number of observation epochs, the mean and median cadence, and the largest gap in it, respectively, in the four bands considering the four sets of systems individually in the left part and their intersection in the right part. The last row provides the mean 5σ depth (m5) in the four bands; these numbers should remain the same for the intersection part as well.

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