Theia 1957
0.03
UTI
0.0
CN
0.09
Cdens
1.0
CC3
0.0
Clit
0.12
Cdup
Radius (P>50% members)
7.0 [arcmin]
- CN 0.0 Sparse
- Cdens 0.09 Very loose
- CC3 1.0 Very high quality
- Clit 0.0 Rarely studied
- Cdup 0.12 Likely duplicate
Overview
Theia 1957 is a sparse, very loose object of very high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, young cluster (see Parameters). It was recently reported in the literature.
â ī¸ Warning: This is likely a duplicate object, which shares a large percentage of members with at least one previously reported entry. See table with shared members information.
Relatively close
Moderate extinction
Massive
Near-solar metallicity
Young
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 286.505 | 3.306 | 0.344 | -1.208 | -3.655 | -18.587 |
| Hunt & Reffert | 2024 | 286.556 | 3.342 | 0.329 | -1.223 | -3.673 | 5.696 |
| Cavallo et al. | 2024 | 286.502 | 3.328 | 0.332 | â | â | â |
| Hunt & Reffert | 2023 | 286.556 | 3.342 | 0.329 | -1.223 | -3.673 | 5.696 |
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 | 1180* | â | â |
| Cavallo et al. | 2024 | 2.70 | 2.61 | â | 23 | 0.410 | â | â | â |
| Hunt & Reffert | 2023 | 2.61 | 2.52 | 2.50 | 28 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.