The Galactic Bulge
| Autor: | Beatriz Leonor Silveira Barbuy |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
Stellar population 010308 nuclear & particles physics Astrophysics::High Energy Astrophysical Phenomena Astronomy and Astrophysics Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Galactic plane 01 natural sciences Galaxy Stars CENTRO GALÁCTICO Space and Planetary Science Bulge M–sigma relation 0103 physical sciences Galactic corona Thick disk 010303 astronomy & astrophysics Astrophysics::Galaxy Astrophysics |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| DOI: | 10.5281/zenodo.3245248 |
| Popis: | The Galactic bulge is the least studied component of our Galaxy. Yet, its formation and evolution are key to understand the formation of the Galaxy itself. Studies on the Galactic bulge have increased significantly in the last years, but still there are many points of controversy. This volume contains several contributions from experts in different aspects of the bulge. Issues discussed include the following: the presence of an old spheroidal bulge, or identification of its old stellar population with the thick disk or halo; fraction of stars younger than 10 Gyr is estimated to be of < 5 to 22% depending on method and authors; multiple populations or only a metal-poor and a metal-rich ones; spheroidal or ellipsoidal distribution of RR Lyrae; formation of the bulge from early mergers or from secular evolution of the bar; different methods of mapping extinction; selection and identification of bulge globular clusters. |
| Databáze: | OpenAIRE |
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