Hyades kinematics and the relationship between galactic coordinates and its angular distance from the apex with GAIA EDR3

Heading: 
Structure and Dynamics of the Galaxy
Al-Johani, AS, Elsanhoury, WH, Al-Juhani, A, Al-Qadhi, G, Al-Anazi, M, Al-Balwi, S, Al-Hamdi, S, Al-Qahtani, S, Al-Shehri, W
Kinemat. fiz. nebesnyh tel (Online) 2022, 38(5):21-30
https://doi.org/10.15407/kfnt2022.05.021
Start Page: Structure and Dynamics of the Galaxy
Language: Ukrainian
Abstract: 

In this paper, we have improved the Hyades members with aid of the Gaia EDR3 source. We have studied their kinematics, including computations of the convergent point with AD-diagram method such as (A0, D0) = (79.48 ± 0.11°, 6.85 ± 0.38°), their spatial velocities U, V, W (km/s), their morphology with 3D. A relation was established for Hyades stars between their Galactic coordinates l, b and the angular distances l from the vertex. The precision criteria of this relation are very satisfactory and a correlation coefficient of value ≈ 0.90 was found which proves that the attributes are completely related linearly.

Keywords: AD-diagram method, Gaia EDR3, Hyades apex, spatial velocity

Full text (PDF)

References: 

1. Bisht D., Elsanhoury W. H., Zhu Q., Sariya D. P., Yadav R. K. S., Rangwal G., Durga¬pal A., Jiang I.-G. An investigation of poorly studied open cluster NGC 4337 using multicolor photometric and Gaia DR2 astrometric data. Astron. J. 160, 119 (2020).
https://doi.org/10.3847/1538-3881/ab9ffd

2. Bisht D., Zhu Q., Elsanhoury W. H., Sariya D. P., Rangwal G., Yadav R. K. S., Durga¬pal A., Jiang I.-G. Detailed analysis of the poorly studied northern open cluster NGC 1348 using multi-color photometry and GAIA EDR3 astrometry. Pub. Astron. Soc. Jap. 73, 677-691 (2021).
https://doi.org/10.1093/pasj/psab029

3. Brandt T. D. The Hipparcos-Gaia catalog of accelerations. Astrophys. J. Suppl. Ser. 239, 31 (2018).
https://doi.org/10.3847/1538-4365/aaec06

4. Brandt T. D. The Hipparcos-Gaia catalog of accelerations: Gaia EDR3 edition. Astro¬phys. J. Suppl. Ser. 254, 42 (2021).
https://doi.org/10.3847/1538-4365/abf93c

5. Brown A. G. A., Vallenari A., Prusti T., et al. Gaia Early Data Release 3. Summary of the contents and survey properties. Astron. and Astrophys. 649, 20 (2021).

6. Chupina N. V., Reva V. G., Vereshchagin S. V. The geometry of stellar motions in the nuc¬leus region of the Ursa Major kinematic group. Astron. and Astrophys. 371, 115-122 (2001).
https://doi.org/10.1051/0004-6361:20010337

7. Chupina N. V., Reva V. G., Vereshchagin S. V. Kinematic structure of the corona of the Ursa Major flow found using proper motions and radial velocities of single stars. Astron. and Astrophys. 451, 909-916 (2006).
https://doi.org/10.1051/0004-6361:20054009

8. Eggen O. J. The astrometric and kinematic parameters of the Sirius and Hyades super¬clusters. Astrophys. J. 89, 1350-1357 (1984).
https://doi.org/10.1086/113634

9. Elsanhoury W. H. Photometric and kinematical analysis of Koposov 12 and Koposov 43 open clusters. J. Astrophys. and Astron. 42, 90 (2021).
https://doi.org/10.1007/s12036-021-09771-x

10. Elsanhoury W. H., Nouh M. I. PPMXL and Gaia morphological analysis of Melotte 22 (Pleiades) and Melotte 25 (Hyades). New Astron. 72, 19-27 (2019).
https://doi.org/10.1016/j.newast.2019.04.006

11. Elsanhoury W. H., Postnikova E. S., Chupina N. V., Vereshchagin S. V. The Pleiades apex and its kinematical structure. Astrophys. Space Sci. 363, 13 (2018).
https://doi.org/10.1007/s10509-018-3268-3

12. Fabricius C., Luri X., Arenou F., et al. Gaia Early Data Release 3. Catalogue validation. Astron. and Astrophys. 649, 25 (2021).

13. Friel E. D. The old open clusters of the milky way. Annu. Rev. Astron. and Astrophys. 33, 381-414 (1995).
https://doi.org/10.1146/annurev.aa.33.090195.002121

14. Gunn J. E., Griffin R. F., Griffin R. E. M., Zimmerman B. A. A new convergent point and distance modulus for the Hyades from radial velocities. Astrophys. J. 96, 198 (1988).
https://doi.org/10.1086/114801

15. Hanson R. B. A study of the motion, membership, and distance of the Hyades cluster. Astrophys. J. 80, 379-401 (1975).
https://doi.org/10.1086/111753

16. Janes K., Adler D. Open clusters and galactic structure. Astrophys. J. Suppl. Ser. 49, 425 (1982).
https://doi.org/10.1086/190805

17. Kopal Z., Sharaf M. A. Linear analysis of the lightcurves of eclipsing variables - Part one - Analysis of the fractional loss of light. Astrophys. Space Sci. 70, 77-101 (1980).
https://doi.org/10.1007/BF00641665

18. Lindegren L., Klioner S., Hernndez J., et al. Gaia Early Data Release 3. The astrometric solution. Astron. and Astrophys. 649, 35 (2021).

19. Liu J.-C., Zhu Z., Hu B. Constructing a Galactic coordinate system based on near-infrared and radio catalogs. Astron. and Astrophys. 536, 6 (2011).
https://doi.org/10.1051/0004-6361/201116947

20. Mihalas D., Binney J. Galactic astronomy; structure and kinematics. San Francisco: Freeman, 2 ed. 384-394 (1981).

21. Moffat A. F. J., Vogt N. An up-to-date picture of galactic spiral features based on young open star clusters. Astron. and Astrophys. 23, 317 (1973).

22. Moraux E. Open clusters and associations in the Gaia era. EAS Publ. Ser. 80-81, 73-114 (2016).
https://doi.org/10.1051/eas/1680004

23. Pang X., Yu Z., Tang S.-Y., Hong J., Yuan Z., Pasquato M., Kouwenhoven M. B. N. Disruption of hierarchical clustering in the Vela OB2 Complex and the Cluster Pair Collinder 135 and UBC 7 with Gaia EDR3: Evidence of supernova quenching. Astron. J. 923, 22 (2021).
https://doi.org/10.3847/1538-4357/ac2838

24. Perryman M. A. C., Brown A. G. A., Lebreton Y. The Hyades: distance, structure, dynamics, and age. Astron. and Astrophys. 331, 81-120 (1998).

25. Postnikova E. S., Elsanhoury W. H., Sariya D. P., et al. The kinematical and space structures of IC 2391 open cluster and moving group with Gaia-DR2. Res. Astron. and Astrophys. 20, 10 (2020).
https://doi.org/10.1088/1674-4527/20/2/16

26. Sharaf M. A., Bassuny A. A., Korany B. A. An error controlled method to determine parameters of moving clusters with application to Hyades. Astrophys. Lett. Commun. 40, 39-61 (2000).

27. Smart W. M. Stellar dynamics. London: Longmans (1968).

28. Torra F., Castaede J., Fabricius C., et al. Gaia Early Data Release 3. Building the Gaia DR3 source list - Cross-match of Gaia observations. Astron. and Astrophys. 649, 18 (2021).
https://doi.org/10.1051/0004-6361/202039637

29. Trumpler R. J. Preliminary results on the distances, dimensions and space distribution of open star clusters. Lick Observ. Bull.; no. 420, Berkeley: University of California Press, 154-188 (1930).
https://doi.org/10.5479/ADS/bib/1930LicOB.14.154T

30. Vereshchagin S. V., Reva V. G., Chupina N. V. The structure of the AD diagram for the Hyades cluster. Astron. Rep. 52, 94-98 (2008).
https://doi.org/10.1134/S1063772908020029