Mass loss and dynamical friction on the Fornax dSph galaxy in the Milky Way potential
Fuente:
arXiv
Enregistré dans:
| Auteurs principaux: | , , , |
|---|---|
| Format: | Preprint |
| Publié: |
2025
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1866918115335471104 |
|---|---|
| author | Di Cintio, Pierfrancesco Iorio, Giuliano Nipoti, Carlo Calura, Francesco |
| author_facet | Di Cintio, Pierfrancesco Iorio, Giuliano Nipoti, Carlo Calura, Francesco |
| contents | We study the interplay between mass-loss and dynamical friction (DF) on the orbital decay of the Fornax dwarf spheroidal galaxy in the potential of the Milky Way (MW). Using a simplified single particle approach combined with a mass-loss rate extrapolated by $N-$body simulations we find that the the effect of a time-dependent mass partially compensates DF, and typically produces a much less evident decay of the pergalactic distance, thus confirming that $N-$body simulations in smooth MW potentials without DF can be taken as a good model of the dynamics of dwarf satellite galaxies. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_03286 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Mass loss and dynamical friction on the Fornax dSph galaxy in the Milky Way potential Di Cintio, Pierfrancesco Iorio, Giuliano Nipoti, Carlo Calura, Francesco Astrophysics of Galaxies We study the interplay between mass-loss and dynamical friction (DF) on the orbital decay of the Fornax dwarf spheroidal galaxy in the potential of the Milky Way (MW). Using a simplified single particle approach combined with a mass-loss rate extrapolated by $N-$body simulations we find that the the effect of a time-dependent mass partially compensates DF, and typically produces a much less evident decay of the pergalactic distance, thus confirming that $N-$body simulations in smooth MW potentials without DF can be taken as a good model of the dynamics of dwarf satellite galaxies. |
| title | Mass loss and dynamical friction on the Fornax dSph galaxy in the Milky Way potential |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2508.03286 |