Revisiting mass estimates of the Milky Way
Fuente:
arXiv
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| Auteurs principaux: | , , , , |
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| Format: | Preprint |
| Publié: |
2023
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| _version_ | 1866912820515307520 |
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| author | Jiao, Yongjun Hammer, Francois Wang, Haifeng Wang, Jianling Yang, Yanbin |
| author_facet | Jiao, Yongjun Hammer, Francois Wang, Haifeng Wang, Jianling Yang, Yanbin |
| contents | We use the rotation curve from Gaia data release (DR) 3 to estimate the mass of the Milky Way. We consider an Einasto density profile to model the dark matter component. We extrapolate and obtain a dynamical mass $M=2.75^{+3.11}_{-0.48}\times 10^{11} M_\odot$ at $112$ kpc. This lower-mass Milky Way is consistent with the significant declining rotation curve, and can provide new insights into our Galaxy and halo inhabitants. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2306_05461 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Revisiting mass estimates of the Milky Way Jiao, Yongjun Hammer, Francois Wang, Haifeng Wang, Jianling Yang, Yanbin Astrophysics of Galaxies We use the rotation curve from Gaia data release (DR) 3 to estimate the mass of the Milky Way. We consider an Einasto density profile to model the dark matter component. We extrapolate and obtain a dynamical mass $M=2.75^{+3.11}_{-0.48}\times 10^{11} M_\odot$ at $112$ kpc. This lower-mass Milky Way is consistent with the significant declining rotation curve, and can provide new insights into our Galaxy and halo inhabitants. |
| title | Revisiting mass estimates of the Milky Way |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2306.05461 |