HSC 221
0.43
UTI
0.41
CN
1.0
Cdens
0.75
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
3.3 [arcmin]
- CN 0.41 Poorly populated
- Cdens 1.0 Very dense
- CC3 0.75 High quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
HSC 221 is a poorly populated, very dense object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by very high extinction. It is catalogued as a massive, near-solar metallicity, very young cluster (see Parameters). It was recently reported in the literature.
Note: This object shares a significant percentage of members with a later reported entry. See table with shared members information.
Relatively close
Very high extinction
Massive
Near-solar metallicity
Very young
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 277.795 | -10.88 | 0.364 | 0.004 | -1.971 | 38.491 |
| Hunt & Reffert | 2024 | 277.786 | -10.875 | 0.372 | -0.039 | -1.975 | 38.474 |
| Cavallo et al. | 2024 | 277.796 | -10.893 | 0.374 | â | â | â |
| Hunt & Reffert | 2023 | 277.786 | -10.875 | 0.372 | -0.039 | -1.975 | 38.474 |
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 | 1676* | â | â |
| Cavallo et al. | 2024 | 1.86 | 5.36 | â | 15 | 0.070 | â | â | â |
| Hunt & Reffert | 2023 | 2.52 | 5.83 | 2.58 | 7 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.