Table 2
Elemental abundances of Terzan 2 members.
| APOGEE ID | S/N | Teƒƒ | log 𝑔 | ξt | [C/Fe] | [N/Fe] | [O/Fe] | [Mg/Fe] | [Al/Fe] | [Si/Fe] | [Ca/Fe] | [Ti/Fe] | [Fe/H] | [Ni/Fe] | [Ce/Fe] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (pixel−1) | (K) | (cgs) | (km s−1) | ||||||||||||
| 2M17273185–3048156 | 139 | 4155 | 1.082 | 1.593 | −0.42 | +0.98 | +0.23 | +0.47 | +0.32 | +0.43 | +0.24 | +0.13 | −0.74 | +0.04 | +0.06 |
| 2M17273364–3047243 | 152 | 3975 | 0.757 | 1.654 | −0.31 | +0.96 | +0.25 | +0.41 | +0.31 | +0.27 | +0.25 | +0.13 | −0.86 | +0.04 | +0.12 |
| 2M17273419–3048097 | 183 | 3772 | 0.383 | 1.911 | −0.01 | +0.62 | +0.27 | +0.36 | +0.10 | +0.27 | +0.33 | +0.26 | −0.89 | −0.03 | +0.09 |
| 2M17273540–3047308 | 173 | 3864 | 0.553 | 1.687 | −0.11 | +0.11 | +0.36 | +0.37 | +0.21 | +0.35 | +0.30 | +0.26 | −0.88 | −0.03 | +0.15 |
| Mean | … | … | … | … | −0.21 | +0.81 | +0.28 | +0.40 | +0.24 | +0.33 | +0.28 | +0.20 | −0.84 | +0.01 | +0.11 |
| std | … | … | … | … | 0.16 | 0.35 | 0.05 | 0.04 | 0.09 | 0.07 | 0.04 | 0.07 | 0.06 | 0.03 | 0.03 |
| 1σ | … | … | … | … | 0.15 | 0.31 | 0.04 | 0.04 | 0.08 | 0.06 | 0.04 | 0.06 | 0.04 | 0.02 | 0.03 |
| ASPCAP DR17 | |||||||||||||||
| Mean | … | … | … | … | −0.08 | +0.57 | +0.32 | +0.36 | +0.13 | +0.25 | +0.24 | +0.20 | −0.86 | +0.05 | +0.15 |
| std | … | … | … | … | 0.05 | 0.34 | 0.01 | 0.04 | 0.12 | 0.03 | 0.01 | 0.08 | 0.05 | 0.0 | − |
| 1σ | … | … | … | … | 0.04 | 0.01 | 0.03 | 0.03 | 0.08 | 0.05 | 0.01 | 0.02 | 0.03 | 0.0 | − |
Notes. For each chemical species, we report the mean abundance, the standard deviation, and 1σ, which is defined as (84th percentile – 16th percentile)/2. We compare our results with values obtained from ASPCAP/APOGEE DR17. Solar reference abundances are adopted from Asplund et al. (2005), except for Ce, which is taken from Grevesse et al. (2015).
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