Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 394, Issue 4, Pages 2223-2228Publisher
OXFORD UNIV PRESS
DOI: 10.1111/j.1365-2966.2009.14489.x
Keywords
galaxies: dwarf; Local Group
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Funding
- GoS/DAAD Australia Germany Joint Research Co-operative Scheme
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The spatial distributions of the most recently discovered Ultra-faint dwarf satellites around the Milky Way and the Andromeda galaxy are compared to the previously reported discs-of-satellites (DoS) of their host galaxies. In our investigation, we pay special attention to the selection bias introduced due to the limited sky coverage of Sloan Digital Sky Survey (SI)SS). We find that the new Milky Way satellite galaxies follow closely the DoS defined by the more luminous dwarfs, thereby further emphasizing the statistical significance of this feature in the Galactic halo. We also note a deficit of satellite galaxies with Galactocentric distances larger than 100 kpc that are away from the DoS of the Milk), Way. In the case of Andromeda. we obtain similar results. naturally complementing our previous finding and strengthening the notion that the DoS are optical manifestations of a phase-space correlation of satellite galaxies.
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