Table 2.
Statistics of CHeBs in the MW dSphs.
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) | |
|---|---|---|---|---|---|---|---|---|---|---|
| Name | Rell | (R1, R2) | Nr | Nnet | S/N | Σbg | NContam. | pMW | N | N |
| (deg; kpc) | (deg) | (deg−2) | (> 1.8 M⊙) | (> 2.04 M⊙) | ||||||
| Sculptor | 1.1; 1.65 | (1.2, 5.0) | 91 | 90 | 9.4 | 0.47 ± 0.07 | 1.3 ± 0.2 | 5 × 10−129 | 63 | 39 |
| Sextans | 0.8; 1.18 | (1.0, 5.0) | 54 | 48 | 6.53 | 3.4 ± 0.19 | 6.0 ± 0.3 | 1.4 × 10−32 | 37 | 26 |
| UMi | 1.48; 1.95 | (3.0, 5.0) | 44 | 42 | 6.31 | 0.67 ± 0.10 | 2.1 ± 0.3 | 6 × 10−42 | 29 | 22 |
| Draco | 0.5; 0.72 | (0.8, 5.0) | 32 | 31 | 5.43 | 2.37 ± 0.16 | 1.3 ± 0.1 | 4.6 × 10−33 | 14 | 8 |
| Carina( † ) | 0.4; 0.74 | (0.35, 0.7) | 95 | 85 | 8.63 | 38.7 ± 4.96 | 10.2 ± 1.3 | 2.4 × 10−57 | 69 | 42 |
| Fornax( † ) | 1.3; 3.16 | (1.5, 2.5) | 964 | 923 | 29.6 | 11.3 ± 0.8 | 40.8 ± 2.9 | 1.4 × 10−933 | 687 | 353 |
Notes. Columns (1–6): Relevant parameters for the selection of CHeB candidates, see Sect. 3.3.1. Column (7): Contamination counts within the elliptical area covered by Rell, inferred from the contamination density Σbg. Column (8): Probability that all CHeB candidates are due to contamination by MW stars. Columns (9–11): Counts of CHeB candidates when considering only stars with mass larger than 1.8 and 2.04 M⊙, which correspond to twice the turnoff mass for a stellar population with an age of ≤7 and ≤5 Gyr, respectively. The parameters for other dSphs than Sculptor are derived from Appendix A. ( † )The methodology of Appendix A was used to derive parameters for Carina and Fornax, which distances are too large and requires a deeper photometry than that of Gaia.
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