Dwarf-spheroidal satellites: are they of tidal origin?

Details Dwarf-spheroidal satellites: are they of tidal origin? Dwarf-spheroidal satellites: are they of tidal origin?

2007-01-10

arxiv.org/abs/astro-ph/0701289v1

Mon.Not.Roy.Astron.Soc.376:387-392,2007

Astronomy and Astrophysics

Astrophysics

7 pages, 3 figures; acc. for pub. in MNRAS

Scientific paper

10.1111/j.1365-2966.2007.11438.x

The Milky Way and Andromeda must have formed through an initial epoch of sub-structure merging. As a result of fundamental physical conservation laws tidal-dwarf galaxies (TDGs) have likely been produced. Here we show that such TDGs appear, after a Hubble-time of dynamical evolution in the host dark-matter halo, as objects that resemble known dSph satellite galaxies. We discuss the possibility that some of the Milky Way's satellites may be of tidal origin.

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