Theia 7778
0.30
UTI
0.0
CN
0.25
Cdens
0.75
CC3
0.25
Clit
1.0
Cdup
Radius (P>50% members)
5.8 [arcmin]
- CN 0.0 Sparse
- Cdens 0.25 Loose
- CC3 0.75 High quality
- Clit 0.25 Poorly studied
- Cdup 1.0 Unique
Overview
Theia 7778 is a sparse, loose object of high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by low extinction. It is catalogued as a low-mass, near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It was recently reported in the literature.
Relatively close
Low extinction
Low mass
Near-solar metallicity
Intermediate age
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 311.726 | 35.708 | 0.444 | -2.904 | -4.218 | â |
| Zhang et al. | 2024 | 311.802 | 35.635 | â | â | â | â |
| Hunt & Reffert | 2024 | 311.802 | 35.635 | 0.43 | -2.859 | -4.224 | â |
| Cavallo et al. | 2024 | 311.723 | 35.757 | 0.431 | â | â | â |
| Hunt & Reffert | 2023 | 311.802 | 35.635 | 0.43 | -2.859 | -4.224 | â |
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 |
|---|---|---|---|---|---|---|---|---|---|
| Zhang et al. | 2024 | â | â | â | â | -0.310* | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 44* | â | â |
| Cavallo et al. | 2024 | 2.29 | 0.93 | â | 123 | 0.200 | â | â | â |
| Hunt & Reffert | 2023 | 2.10 | 0.81 | 0.65 | 219 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.