Theia 3857
0.23
UTI
0.32
CN
0.43
Cdens
1.0
CC3
0.0
Clit
0.66
Cdup
Radius (P>50% members)
4.1 [arcmin]
- CN 0.32 Poorly populated
- Cdens 0.43 Loose
- CC3 1.0 Very high quality
- Clit 0.0 Rarely studied
- Cdup 0.66 Likely unique
Overview
Theia 3857 is a poorly populated, loose object of very high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by high extinction. It is catalogued as a massive, metal-rich, very young cluster (see Parameters). It was recently reported in the literature.
Note: This is likely a unique object, which shares a moderate percentage of members with at least one previously reported entry. See table with shared members information.
Distant
High extinction
Massive
Metal-rich
Very young
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 233.38 | -58.655 | 0.308 | -3.397 | -3.57 | 8.788 |
| Hunt & Reffert | 2024 | 233.382 | -58.658 | 0.303 | -3.418 | -3.573 | 112.75 |
| Cavallo et al. | 2024 | 233.173 | -58.587 | 0.303 | â | â | â |
| Hunt & Reffert | 2023 | 233.382 | -58.658 | 0.303 | -3.418 | -3.573 | 112.75 |
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 | 1154* | â | â |
| Cavallo et al. | 2024 | 4.25 | 3.51 | â | 7 | 0.500 | â | â | â |
| Hunt & Reffert | 2023 | 3.17 | 3.56 | 2.80 | 11 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Silver sample.