HSC Wide and Deep Imaging Survey for the Milky Way Satellite Galaxies
Abstract
We have carried out an imaging survey for Local Group dwarf spheroidal galaxy Ursa Minor (UMi) using Hyper Suprime-Cam (HSC) on the 8.2m Subaru Telescope. Wide and deep data obtained by HSC enable us to investigate the extent of UMi which is revealed to extend out to twice the nominal tidal radius. The fraction of binary systems is also investigated from the morphology of the main sequence and estimated to be ~0.4.
- Publication:
-
Rediscovering Our Galaxy
- Pub Date:
- August 2018
- DOI:
- 10.1017/S1743921317008456
- Bibcode:
- 2018IAUS..334..319K
- Keywords:
-
- Local Group;
- dwarf galaxy;
- star formation;
- structure