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Spectroscopie Optique Des Étoiles Classiques de la Galaxie

Spectroscopie Optique Des Étoiles Classiques de la Galaxie

          
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About the Book

L'étude spectroscopique des étoiles Be (Be) classiques est importante pour mieux comprendre la physique de leur disque. Récemment, Banerjee et al. (2021) ont produit un atlas de toutes les principales raies d'émission trouvées dans un large échantillon de plus de 100 étoiles Be de champ en utilisant le télescope Chandra de l'Himalaya de 2 m de l'Institut indien d'astrophysique (IIA) situé au Ladakh, en Inde. Cette étude a révélé plusieurs aspects importants des disques des étoiles Be, tels que l'importance de considérer le paramètre d'extinction (AV) pour étudier les propriétés des étoiles Be, leurs disques sont généralement optiquement épais par nature, l'existence probable de disques non isothermes dans certaines de ces étoiles qui pourraient être responsables de la production de raies d'émission triplet de Ca II, etc. Dans une autre étude (Banerjee et al. 2022), nous nous sommes concentrés sur la compréhension de la nature transitoire du disque des étoiles Be grâce à un suivi continu des variations du profil de leur raie Hα pendant 5 années consécutives en utilisant le télescope de 1 m de l'Observatoire Vainu Bappu, Kavalur, Inde, exploité par l'IIA. Notre travail ouvre donc un large champ pour réaliser d'autres études dédiées aux étoiles Be en utilisant des échantillons plus importants afin de mieux comprendre les propriétés de leur disque.


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Product Details
  • ISBN-13: 9786207665280
  • Publisher: KS Omniscriptum Publishing
  • Publisher Imprint: Editions Notre Savoir
  • Height: 229 mm
  • No of Pages: 172
  • Spine Width: 10 mm
  • Width: 152 mm
  • ISBN-10: 6207665287
  • Publisher Date: 15 Jun 2024
  • Binding: Paperback
  • Language: French
  • Returnable: N
  • Weight: 258 gr


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