HSC 2557
0.47
UTI
0.58
CN
1.0
Cdens
0.75
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
2.8 [arcmin]
- CN 0.58 Moderately populated
- Cdens 1.0 Very dense
- CC3 0.75 High quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
HSC 2557 is a moderately populated, very dense object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as a massive, near-solar metallicity, intermediate-age cluster (see Parameters). It was recently reported in the literature.
Note: This object shares a large percentage of members with a later reported entry. See table with shared members information.
Distant
High extinction
Massive
Near-solar metallicity
Intermediate age
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 196.375 | -62.39 | 0.254 | -7.535 | -0.165 | -41.942 |
| Hunt & Reffert | 2024 | 196.393 | -62.389 | 0.238 | -7.537 | -0.192 | -20.596 |
| Cavallo et al. | 2024 | 196.301 | -62.38 | 0.243 | â | â | â |
| Hunt & Reffert | 2023 | 196.393 | -62.389 | 0.238 | -7.537 | -0.192 | -20.596 |
đĄ Note: The UCC values are estimated from its identified members.
| Reference | Year | Dist [kpc] | Av [mag] | DAv [mag] | Age [Myr] | [Fe/H] [dex] | Mass [Msun] | Bfr | BSS |
|---|---|---|---|---|---|---|---|---|---|
| Hunt & Reffert | 2024 | â | â | â | â | â | 1527* | â | â |
| Cavallo et al. | 2024 | 3.33 | 3.63 | â | 339 | 0.170 | â | â | â |
| Hunt & Reffert | 2023 | 3.74 | 4.09 | 2.73 | 100 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Silver sample.