A radiation transfer model for the Milky Way. II The global properties and large scale structure
| Autor: | Cristina C. Popescu, M. T. Rushton, Giovanni Natale, D. Pricopi, Ruizhi Yang, Jordan J. Thirlwall |
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| Rok vydání: | 2021 |
| Předmět: |
Physics
Spiral galaxy Stellar mass Star formation Milky Way Astrophysics::High Energy Astrophysical Phenomena Extinction (astronomy) FOS: Physical sciences Astronomy and Astrophysics Solar radius F500 Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics - Astrophysics of Galaxies Galaxy Thin disk Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics Astrophysics::Galaxy Astrophysics |
| ISSN: | 0035-8711 |
| DOI: | 10.48550/arxiv.2111.02180 |
| Popis: | We obtained an axi-symmetric model for the large-scale distribution of stars and dust in the Milky Way (MW) using a radiative transfer code that can account for the existing near-infrared (NIR)/mid-infrared/submm all-sky emission maps of our Galaxy. We find that the MW has a star-formation rate of ${ SFR}=1.25\pm0.2\,{ M}_{\odot}$/yr, a stellar mass $M_{*}=(4.9\pm 0.3)\times10^{10}\,{ M}_{\odot}$, and a specific SFR that is relatively constant with radius (except for the inner 1 kpc). We identified an inner radius $R_{ in}= 4.5$\,kpc beyond which the stellar emissivity and dust distribution fall exponentially. For $R Comment: Accepted for publication in MNRAS, 25 pages, 21 figures |
| Databáze: | OpenAIRE |
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