arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0809.2692astro-ph
收藏

斯巴鲁I的正确动作。Subaru Deep Field的第一个样品

Proper motions with Subaru I. Methods and a first sample in the Subaru Deep Field

Michael W. Richmond, Tomoki Morokuma, Mamoru Doi, Yutaka Komiyama, Naoki Yasuda, Sadanori Okamura, Avishay Gal-Yam

摘要:

我们在一组20张斯巴鲁深度图像中寻找自行的恒星,这些图像覆盖了大约0.28平方度,深度为i ~ 25,拍摄时间跨度为6年。在本文中,我们详细描述了我们的减少和技术,以确定移动对象。我们提出了第一个样本的99颗恒星的运动具有很高的意义,并简要讨论了人口,他们很可能是从绘制。仅根据测光和运动,我们预计候选者中有9个可能是白矮星。我们还发现了一组恒星,这可能是极端贫金属的次矮星的晕。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑