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http://hdl.handle.net/2445/180562
Title: | Spiral arm lanes as seen from young and old stellar tracers |
Author: | Altamirano Bonilla, Joseph David |
Director/Tutor: | Figueras Siñol, Francesca |
Keywords: | Braços espirals Evolució estel·lar Treballs de fi de grau Spiral arms Stars evolution Bachelor's theses |
Issue Date: | Jul-2021 |
Abstract: | In this work we compare the spiral structure depicted by two stellar tracers with very different ages: an extremely young population of OB type stars and a population of Red Clump stars assumed to be relaxed in the Galactic potential. A Kernel density estimator applied to Gaia and StarHorse EDR3 data allow us to trace the over/under-density maps on the Galactic plane at± 3 kpc from the Sun location. Preliminary results confirm that Perseus and Sagittarius-Carina arms are well delineated in both samples and possible offsets between their locus are evaluated. More important, the surface density amplitude of the young population is estimated to be a factor 2-3 larger than that of the old population. These results provide new insights to discern on the mechanisms by which the Milky Way spiral arms evolve |
Note: | Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2021, Tutora: Francesca Figueras Siñol |
URI: | http://hdl.handle.net/2445/180562 |
Appears in Collections: | Treballs Finals de Grau (TFG) - Física |
Files in This Item:
File | Description | Size | Format | |
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ALTAMIRANO BONILLA JOSEPH DAVID_4253614_assignsubmission_file_TFG-Altamirano-Bonilla-Joseph-David.pdf | 2.66 MB | Adobe PDF | View/Open |
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