Autor:	Jiao, Yongjun, Hammer, Francois, Wang, Haifeng, Wang, Jianling, Yang, Yanbin
Rok vydání:	2023
Předmět:	Astrophysics - Astrophysics of Galaxies
Druh dokumentu:	Working Paper
Popis:	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. Comment: 4 pages, 2 figures, Accepted for publication in proceedings of IAU Symposium 379: Dynamical Masses of Local Group Galaxies, Potsdam, March 20-24, 2023
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2306.05461 Zobrazit plný text záznamu View this record from Arxiv