Theia 4
0.47
UTI
0.75
CN
1.0
Cdens
0.75
CC3
0.0
Clit
0.94
Cdup
Radius (P>50% members)
12.2 [arcmin]
- CN 0.75 Rich
- Cdens 1.0 Very dense
- CC3 0.75 High quality
- Clit 0.0 Rarely studied
- Cdup 0.94 Very likely unique
Overview
Theia 4 is a rich, very dense object of high C3 quality. Its parallax locates it at a close distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, very young cluster (see Parameters). It was recently reported in the literature.
Note: This is very likely a unique object, which shares a very small percentage of members with at least one previously reported entry. See table with shared members information.
Close
Moderate extinction
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 | 344.354 | 62.994 | 1.163 | -2.404 | -2.559 | -13.562 |
| Hunt & Reffert | 2024 | 344.129 | 62.977 | 1.156 | -2.397 | -2.547 | -17.247 |
| Cavallo et al. | 2024 | 344.419 | 63.037 | 1.154 | â | â | â |
| Hunt & Reffert | 2023 | 344.129 | 62.977 | 1.156 | -2.397 | -2.547 | -17.247 |
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 | 175* | â | â |
| Cavallo et al. | 2024 | 0.87 | 2.09 | â | 5 | -0.140 | â | â | â |
| Hunt & Reffert | 2023 | 0.83 | 2.03 | 1.47 | 5 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.