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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 660890.0, MPI für Astronomie / Publikationen_mpia
On the nature of the stellar bridge between Leo IV and Leo V
Authors:Jin, S.; Martin, N.; de Jong, J.; Conn, B.; Rix, H. -. W.; Irwin, M.
Date of Publication (YYYY-MM-DD):2012
Title of Proceedings:Galactic Archaeology: Near-Field Cosmology and the Formation of the Milky Way
Start Page:153
End Page:156
Volume (in Series):458
Name of Conference/Meeting:Galactic Archaeology: Near-Field Cosmology and the Formation of the Milky Way
Audience:Not Specified
Abstract / Description:We present a revised analysis of a speculated stellar bridge between the Milky Way dwarf galaxies Leo IV and Leo V. Using data acquired with Subaru/Suprime-Cam over a 1° × 4° field encompassing the two satellites and the region in between, we confirm our previous detection of a stellar overdensity between Leo IV and Leo V (de Jong et al. 2010). The larger area coverage and improved depth of our current dataset allow for an improved analysis of the stellar overdensity that had previously appeared to bridge the two galaxies. A main-sequence turn-off feature visible in the stacked colour-magnitude diagram of the contiguously observed Subaru fields reveals an extended stellar structure at a distance of approximately 20 kpc. Its angular proximity to the Virgo overdensity, as well as a good correspondence in distance and metallicity, suggests that the smaller structure we detect may be associated with the much larger Virgo stellar overdensity.
Comment of the Author/Creator:Date: 2012, August 1, 2012
External Publication Status:published
Document Type:Conference-Paper
Communicated by:N. N.
Affiliations:MPI für Astronomie
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