High spatial resolution Galactic 3D extinction mapping with IPHAS

High spatial resolution Galactic 3D extinction mapping with IPHAS
复制标题

使用 IPHAS 绘制高空间分辨率银河系 3D 消光图

DOI:
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发表时间:
2008
期刊:
Proceedings of the International Astronomical Union
影响因子:
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通讯作者:
N. Walton
N. Walton
中科院分区:
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文献类型:
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作者:
S. Sale;J. Drew;Y. Unruh;M. Irwin;C. Knigge;S. Phillipps;A. Zijlstra;B. Gansicke;R. Greimel;P. Groot;A. Mampaso;R. Morris;R. Napiwotzki;D. Steeghs;N. Walton

文献摘要

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摘要本文提出了一种能在三维空间中绘制消光图的算法MEAD,它具有很好的距离和角分辨率。然后在研究外银河系的结构时使用MEAD。我们发现,银河系的径向密度分布采取了破指数的形式,密度下降更陡峭超过银河系中心半径~13千秒差距。
Abstract An algorithm, MEAD, is presented, which can map extinction in three dimensions, with fine distance and angular resolutions. MEAD is then employed when studying the structure of the outer Galaxy. We show that the Galaxy's radial density profile takes the form of a broken exponential, with density dropping off more steeply beyond a Galacto-centric radius of ~13 kpc.