HSC 2939
0.06
UTI
0.0
CN
0.07
Cdens
0.25
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
6.0 [arcmin]
- CN 0.0 Sparse
- Cdens 0.07 Very loose
- CC3 0.25 Low quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
HSC 2939 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by high extinction. It is catalogued as a very massive, metal-poor, old cluster (see Parameters). It was recently reported in the literature.
Note: This object shares a moderate percentage of members with a later reported entry. See table with shared members information.
â ī¸ Warning: the low UTI value and no obvious signs of duplication (Cdup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.
Distant
High extinction
Very massive
Metal-poor
Old
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 260.749 | -31.995 | 0.281 | -0.858 | -1.703 | -109.851 |
| Hunt & Reffert | 2024 | 260.797 | -32.023 | 0.235 | -0.847 | -1.708 | -49.403 |
| Cavallo et al. | 2024 | 260.787 | -32.054 | 0.229 | â | â | â |
| Hunt & Reffert | 2023 | 260.797 | -32.023 | 0.235 | -0.847 | -1.708 | -49.403 |
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 | 7627* | â | â |
| Cavallo et al. | 2024 | 3.48 | 4.61 | â | 2239 | -0.620 | â | â | â |
| Hunt & Reffert | 2023 | 3.62 | 4.85 | 3.09 | 1489 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Silver sample.