Ivanov 8
(MWSC 1470; BPI 8)
0.83
UTI
0.76
CN
1.0
Cdens
1.0
CC3
0.7
Clit
1.0
Cdup
Radius (P>50% members)
0.7 [arcmin]
- CN 0.76 Rich
- Cdens 1.0 Very dense
- CC3 1.0 Very high quality
- Clit 0.7 Moderately studied
- Cdup 1.0 Unique
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 (see Parameters). It is moderately studied in the literature.
(*): The parallax distance estimate (~6.50 kpc) differs significantly from the median photometric distance (~4.74 kpc).
Distant
High extinction
Metal-poor
Intermediate age
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | β | 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 |
| 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] | Bfr | BSS |
|---|---|---|---|---|---|---|---|---|---|
| Hunt & Reffert | 2024 | β | β | β | β | β | 493* | 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 |
| Dias et al. | 2002 | 3.89 | 3.35 | β | 1585 | β | β | β | β |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.