Ivanov 8
(MWSC 1470; BPI 8)
0.83
UTI
0.76
CN
1.0
Cdens
1.0
CC3
0.7
Clit
1.0
Cdup
Stellar density (N50/rad)
65.7 [N/pc2]
- CN 0.76 Rich
- Cdens 1.0 Very dense
- CC3 1.0 Very high quality
- Clit 0.7 Moderately studied
- Cdup 1.0 Unique
π₯ Members
π Colab
π¬ Bayestar19
MOCA
π CDS
π Simbad
π CDS (Ξ±, Ξ΄)
π Simbad (Ξ±, Ξ΄)
MOCA
π CDS
π Simbad
π CDS (Ξ±, Ξ΄)
π Simbad (Ξ±, Ξ΄)
Overview
Ivanov 8 is a rich, very dense object of very high C3 quality. Its parallax locates it at a large distance, near the mid-plane, affected by high extinction. It is catalogued as a metal-poor, intermediate-age cluster, but with a large variance across recent sources for the age and mass parameters (see Parameters). It is moderately studied in the literature.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999β | 124.785 | -35.656 | 0.154 | -2.343 | 3.611 | 95.591 |
| Hunt & Reffert | 2024 | 124.788 | -35.654 | 0.182 | -2.325 | 3.617 | 80.653 |
| Cavallo et al. | 2024 | 124.789 | -35.629 | 0.178 | β | β | β |
| Hunt & Reffert | 2023 | 124.788 | -35.654 | 0.182 | -2.325 | 3.617 | 80.653 |
| Just et al. | 2023 | 124.785 | -35.647 | β | β | β | β |
| Cantat-Gaudin et al. | 2020 | 124.794 | -35.658 | 0.088 | -2.375 | 3.543 | β |
| SΓ‘nchez et al. | 2020 | 124.792 | -35.65 | β | -1.986 | 3.684 | β |
| Cantat-Gaudin & Anders | 2020 | 124.794 | -35.658 | 0.088 | -2.375 | 3.543 | β |
| Bica et al. | 2019 | 124.79 | -35.648 | β | β | β | β |
| Cantat-Gaudin et al. | 2018 | 124.794 | -35.658 | 0.088 | -2.375 | 3.543 | β |
| Kharchenko et al. | 2016 | 124.785 | -35.647 | β | β | β | β |
| Kharchenko et al. | 2013 | 124.791 | -35.65 | β | -3.0 | 4.02 | β |
| Bukowiecki et al. | 2011 | 124.792 | -35.656 | β | β | β | β |
| Dias et al. | 2002 | 124.792 | -35.65 | β | -3.0 | 4.02 | β |
π‘ 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] | Bfrac | BSS |
|---|---|---|---|---|---|---|---|---|---|
| UCC | 99999β | 5.055 | 3.305 | 2.0 | 437 | -0.660 | 268 | β | β |
| Hunt & Reffert | 2024 | β | β | β | β | β | 493(1) | β | β |
| Cavallo et al. | 2024 | 5.37 | 4.47 | β | 437 | -0.660 | β | β | β |
| Hunt & Reffert | 2023 | 4.74 | 3.75 | 2.00 | 583 | β | β | β | β |
| Just et al. | 2023 | β | β | β | 63 | β | 44 | β | β |
| Cantat-Gaudin & Anders | 2020 | 8.58 | β | β | β | β | β | β | β |
| Cantat-Gaudin et al. | 2018 | 8.58 | β | β | β | β | β | β | β |
| Kharchenko et al. | 2016 | 1.19 | 1.48 | β | 63 | β | β | β | β |
| Kharchenko et al. | 2013 | 1.19 | 1.48 | β | 63 | β | β | β | β |
| Bukowiecki et al. | 2011 | 5.94(1) | 3.26 | β | 1585 | β | β | β | β |
| Dias et al. | 2002 | 3.89 | 3.35 | β | 1585 | β | β | β | β |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Cavallo et al. (2024)
Gold sample.