Astronomy:Platais 8 cluster
From HandWiki
Short description: Faint open cluster in the constellation Carina
| a Carinae Cluster | |
|---|---|
 The open cluster Platais 8 photographed during the DSS survey. Credit: SIMBAD | |
| Observation data (J2000.0 epoch) | |
| Constellation | Carina |
| Right ascension | 09h 06m 52.3s[1] |
| Declination | −58° 41′ 06″[1] |
| Distance | 440±1 ly (134.9±0.6 pc[1]) |
| Apparent dimensions (V) | 3.45° × 3.45°[1] |
| Physical characteristics | |
| Estimated age | 30 Ma[2] |
| Other designations | Platais 8, HIP 45080 Cluster, MWSC 1629 |
Cl Platais 8 (a Carinae; HIP 45080 Cluster) is a small and faint open cluster located in the southern constellation Carina. SIMBAD lists the cluster having 28,185 members[3] but the majority of the stars are field stars. In fact, there are only 32 members physically associated with the cluster.[1] Cl Platais 8 is rather young, with an age of only 30 million years. Despite being named after a Carinae, the star is younger than the cluster and has kinematics that differ from the stars in the association.[4]
Members
| Name | mv | MK Type | Dist. (ly) | Notes |
|---|---|---|---|---|
| HD 76230 | 6.57 | A0 V | 410 | Binary |
| HD 78802 | 7.33 | A2 IV | 467 | |
| HD 76413 | 7.48 | A3 V | 417 | |
| HD 80628 | 7.57 | A0/1 V | 442 | |
| HD 74438 | 7.58 | A3m... | 469 | |
| HD 78761 | 7.68 | A2 V | 454 | |
| HD 78027 | 7.88 | A1 V | 444 |
The cluster also has one potential stream star located in Volans[1] and was considered to be a background object prior to 2020.
| Name | mv | MK Type | Dist. (ly) | Notes |
|---|---|---|---|---|
| HD 71863 | 5.94 | G8/K0 III | 421 | HR 3346 |
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Cantat-Gaudin, T.; Anders, F. (January 2020). "Clusters and mirages: cataloguing stellar aggregates in the Milky Way". Astronomy & Astrophysics 633: A99. doi:10.1051/0004-6361/201936691. ISSN 0004-6361. Bibcode: 2020A&A...633A..99C.
- ↑ Tarricq, Y.; Soubiran, C.; Casamiquela, L.; Cantat-Gaudin, T.; Chemin, L.; Anders, F.; Antoja, T.; Romero-Gómez, M. et al. (March 2021). "3D kinematics and age distribution of the open cluster population". Astronomy & Astrophysics 647: A19. doi:10.1051/0004-6361/202039388. ISSN 0004-6361. Bibcode: 2021A&A...647A..19T.
- ↑ "Cl Platais 8". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Cl+Platais+8.
- ↑ Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331–346. doi:10.1134/S1063773712050015. ISSN 1063-7737. Bibcode: 2012AstL...38..331A.
- ↑ Cantat-Gaudin, T.; Jordi, C.; Vallenari, A.; Bragaglia, A.; Balaguer-Núñez, L.; Soubiran, C.; Bossini, D.; Moitinho, A. et al. (October 2018). "A Gaia DR2 view of the open cluster population in the Milky Way". Astronomy & Astrophysics 618: A93. doi:10.1051/0004-6361/201833476. ISSN 0004-6361. Bibcode: 2018A&A...618A..93C.
 |  |
