Open Access
Table 1.
Literature and derived basic parameters of Sextans A and its GC-1.
| Quantity | Observed value | References |
|---|---|---|
| Sextans A | ||
| D | 1.42 ± 0.08 Mpc | Bellazzini et al. (2014) |
| SFR (lifetime) | 600 ± 300 M⊙ Myr−1 kpc−2 | Dolphin et al. (2003a) |
| SFR (last 2.5 Gyr) | 1600 ± 500 M⊙ Myr−1 kpc−2 | Dolphin et al. (2003a) |
| [M/H] | ≈−1.4 | Dolphin et al. (2003a) |
| Sextans A GC-1 | ||
| RA | 10:10:43.80 | |
| Dec | – 04:43:28.8 | |
| V | 18.04 | Beasley et al. (2019) |
| V–I | 0.98 | Beasley et al. (2019) |
| RV | 340.4 ± 0.6 km s−1 | This work |
| Age | ∼9 Gyr | This work |
| 8.6 ± 2.7 Gyr | Beasley et al. (2019) | |
| [Fe/H] | −2.14 ± 0.04 | This work |
| Mdyn | (5.18 ± 1.62)×105 M⊙ | This work |
| M/L | 4.35 ± 1.40 M⊙/LV⊙ | This work |
Notes. D is the distance to the galaxy, SFR is the SF rate, Mdyn is the dynamical or virial mass, and M/L is the mass-to-light ratio.
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