Proper motions with Subaru I. Methods and a first sample in the Subaru Deep Field
Astrophysics
2015-05-13 v1
Abstract
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 ~ 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.
Keywords
Cite
@article{arxiv.0809.2692,
title = {Proper motions with Subaru I. Methods and a first sample in the Subaru Deep Field},
author = {Michael W. Richmond and Tomoki Morokuma and Mamoru Doi and Yutaka Komiyama and Naoki Yasuda and Sadanori Okamura and Avishay Gal-Yam},
journal= {arXiv preprint arXiv:0809.2692},
year = {2015}
}
Comments
12 pages, 8 figures, submitted to PASJ