Journal
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
Volume 61, Issue 1, Pages 97-107Publisher
OXFORD UNIV PRESS
DOI: 10.1093/pasj/61.1.97
Keywords
Galaxy: kinematics and dynamics; Galaxy: structure; stars: kinematics
Categories
Funding
- JSPS [S-03031, 17104002]
- Benoziyo Center for Astrophysics
- Weizmann Institute
- Alfred P. Sloan Foundation
- National Science Foundation
- U.S. Department of Energy
- National Aeronautics and Space Administration
- Japanese Monbukagakusho
- Max Planck Society
- Higher Education Funding Council for England
- Grants-in-Aid for Scientific Research [17104002] Funding Source: KAKEN
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We search for stars with proper motions in a set of twenty deep Subaru images, covering about 0.28 square degrees to a depth of i' similar or equal to 25, taken over a span of six years. In this paper, we describe in detail our reduction and techniques to identify moving objects. We present a first sample of 99 stars with motions of high significance, and discuss briefly the populations from which they are likely drawn. Based on photometry and motions alone, we expect that 9 of the candidates may be white dwarfs. We also find a group of stars which may be extremely metal-poor subdwarfs in the halo.
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