Dynamics of Disk Galaxies and Their Satellites
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| Natura: | Artículo científico |
| Lingua: | en |
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Universidad Nacional Autónoma de México
2001
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| _version_ | 1876435414189867008 |
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| author | Héctor Velázquez |
| author_facet | Héctor Velázquez |
| contents | Dynamics of Disk Galaxies and Their Satellites Héctor Velázquez Física, Astronomía y Matemáticas We address the heating and survival of galaxy disks by infalling satellites using self-consistent N-body simulations. We consider satellites with a variety of internal structures as well several orbits with different eccentricities and orientations. Also, the role of the central region of the galaxy (through a bulge) is studied. We found that the analytical results of Toth & Ostriker (1992) overestimate the heating and thickening of the disk by a factor of 2-3. In particular, we found disks are more robust to the accretion of massive satellites (MS ~ 0.2 MD) that follow retrograte orbits. Finally, the importance of the responsiveness of the halo is analized. 2001 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57101155 en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Vol.11 |
| format | Artículo científico |
| id | redalyc_57101155 |
| institution | Redalyc |
| language | en |
| publishDate | 2001 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Dynamics of Disk Galaxies and Their Satellites Héctor Velázquez Física, Astronomía y Matemáticas Dynamics of Disk Galaxies and Their Satellites Héctor Velázquez Física, Astronomía y Matemáticas We address the heating and survival of galaxy disks by infalling satellites using self-consistent N-body simulations. We consider satellites with a variety of internal structures as well several orbits with different eccentricities and orientations. Also, the role of the central region of the galaxy (through a bulge) is studied. We found that the analytical results of Toth & Ostriker (1992) overestimate the heating and thickening of the disk by a factor of 2-3. In particular, we found disks are more robust to the accretion of massive satellites (MS ~ 0.2 MD) that follow retrograte orbits. Finally, the importance of the responsiveness of the halo is analized. 2001 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57101155 en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Vol.11 |
| title | Dynamics of Disk Galaxies and Their Satellites |
| topic | Física, Astronomía y Matemáticas |
| url | https://www.redalyc.org/articulo.oa?id=57101155 |