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#1628 : Les amas ouverts des Pléiades, des Hyades et alpha Persei tournent aussi

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En utilisant les paramètres astrométriques d'une grande précision et les vitesses radiales fournies par les données du télescope spatial Gaia, des astronomes chinois avaient déjà réussi à déterminer les paramètres 3D de rotation du célèbre amas ouvert Praesepe (alias M44 ou l'amas de la Ruche) en 2022. Ils remettent le couvert aujourd'hui en s'attaquant à trois autres fameux amas d'étoiles ouverts chers aux astronomes amateurs : les Pléiades (M45), les Hyades, et alpha Persei. Tous ces amas ouverts tournent gentiment. Ils publient leur étude dans The Astrophysical Journal.
https://www.ca-se-passe-la-haut.fr/2024/03/les-amas-ouverts-des-pleiades-des.html

Source

Probing the Nature of Rotation in the Pleiades, Alpha Persei, and Hyades Clusters
C. J. Hao et al.
The Astrophysical Journal, Volume 963, Number 2 (8 march 2024)
https://doi.org/10.3847/1538-4357/ad2459

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1700 episoade

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Manage episode 405669691 series 1296652
Content provided by Eric Simon. All podcast content including episodes, graphics, and podcast descriptions are uploaded and provided directly by Eric Simon or their podcast platform partner. If you believe someone is using your copyrighted work without your permission, you can follow the process outlined here https://ro.player.fm/legal.

En utilisant les paramètres astrométriques d'une grande précision et les vitesses radiales fournies par les données du télescope spatial Gaia, des astronomes chinois avaient déjà réussi à déterminer les paramètres 3D de rotation du célèbre amas ouvert Praesepe (alias M44 ou l'amas de la Ruche) en 2022. Ils remettent le couvert aujourd'hui en s'attaquant à trois autres fameux amas d'étoiles ouverts chers aux astronomes amateurs : les Pléiades (M45), les Hyades, et alpha Persei. Tous ces amas ouverts tournent gentiment. Ils publient leur étude dans The Astrophysical Journal.
https://www.ca-se-passe-la-haut.fr/2024/03/les-amas-ouverts-des-pleiades-des.html

Source

Probing the Nature of Rotation in the Pleiades, Alpha Persei, and Hyades Clusters
C. J. Hao et al.
The Astrophysical Journal, Volume 963, Number 2 (8 march 2024)
https://doi.org/10.3847/1538-4357/ad2459

  continue reading

1700 episoade

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