Table 5.
Parameters of the HB population in NGC 2808.
| ID | Y | N | N/Ntot | μ/M⊙ | δ/M⊙ | MTip/M⊙ |
 |
Δμ/M⊙ |
|---|---|---|---|---|---|---|---|---|
| 1G | 0.250 | – | – | 0.110 ± 0.024 | 0.009 ± 0.003 | 0.828 | 0.718 ± 0.024 | – |
| 2G1 | 0.252 | – | – | 0.126 ± 0.022 | 0.011 ± 0.003 | 0.825 | 0.699 ± 0.023 | 0.016 ± 0.012 |
| 2G2 | 0.290 | 294 ± 15 | 35.04 ± 1.8% | 0.203 ± 0.023 | 0.027 ± 0.002 | 0.773 | 0.570 ± 0.026 | 0.093 ± 0.014 |
| 2Gea | 0.330 | 48 ± 7 | 5.72 ± 1.0% | 0.226 ± 0.025 | 0.004 ± 0.001 | 0.719 | 0.493 ± 0.025 | 0.116 ± 0.013 |
| 2Geb | 0.360 | 54 ± 9 | 6.51 ± 1.0% | 0.236 ± 0.024 | 0.008 ± 0.002 | 0.679 | 0.443 ± 0.024 | 0.123 ± 0.013 |
| Alternate eHB description | ||||||||
| 2Gea | 0.340 | 47 ± 7 | 5.55 ± 1.0% | 0.213 ± 0.021 | 0.005 ± 0.001 | 0.705 | 0.492 ± 0.021 | 0.103 ± 0.013 |
| 2Geb | 0.340 | 53 ± 8 | 6.63 ± 1.0% | 0.256 ± 0.024 | 0.008 ± 0.002 | 0.705 | 0.449 ± 0.024 | 0.146 ± 0.013 |
Notes. Columns display: ID of the population, helium abundance (Y), number and number fraction (N and N/Ntot), average mass loss (μ/M⊙), mass loss spread (δ/M⊙), mass of the star at the Tip of the RGB (MTip/M⊙), average HB mass for the star in the population (
), and mass loss difference compared to the 1G stars (Δμ/M⊙).
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