Table 2.
Size of the SRV sample at each successive filtering step.
| Step | LMC | SMC | Total | |
|---|---|---|---|---|
| 0 | OGLE-III SRVs | 11 132 | 2222 | 13 354 |
| 1 | θ2MASS ≤ 1″ | 11 106 | 2215 | 13 321 |
| θGaia ≤ 1″ | 11 128 | 2218 | 13 346 | |
| All θ ≤ 1″ | 11 105 | 2213 | 13 318 | |
| Rejected | 27 | 9 | 36 | |
| 2 | 3 periods | 2931 | 1764 | 4695 |
| 2 periods | 5948 | 300 | 6248 | |
| 1 period | 2166 | 124 | 2290 | |
| Total | 11 045 | 2188 | 13 223 | |
| Rejected | 60 | 25 | 85 | |
| 3 | Pa on C′, Pb on C | 2819 | 799 | 3618 |
| Pa on C, Pb on C′ | 1884 | 545 | 2429 | |
| Only Pa on C′ | 3349 | 308 | 3657 | |
| Only Pa on C | 2301 | 411 | 2712 | |
| Total | 10 353 | 2063 | 12 416 | |
| Rejected | 692 | 125 | 817 | |
| 3′ | C-rich | 4647 | 1261 | 5908 |
| O-rich | 5464 | 645 | 6109 | |
| Uncertain | 242 | 157 | 399 | |
Notes. The steps are: starting sample (0), well-matched sources (1), exclusion of non-pulsation periods (2), and mode assignment (3, corresponding to the final sample). The last few rows (3′) give the numbers of sources in the final sample by chemical type, according to the approach described in Sect. 3.1. We note that all SRVs with θGaia DR2 ≤ 1″ also have θGaia EDR3 ≤ 1″, hence Gaia DR2 and EDR3 are not distinguished in the rows describing step (1).
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