Extinction Map of Baade’s Window
Extinction Map of Baade’s Window
复制标题
巴德之窗灭绝图
DOI：
10.1086/309976
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
K. Stanek
中科院分区：
文献类型：
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作者：
K. Stanek
最近Woźniak和Stanek提出了一种基于双波段光度法的研究星际消光的新方法，该方法使用红团星作为构建变红曲线的手段。将此方法应用于光学引力透镜实验得到的彩色星等图，构建了Baade窗口40′× 40′区域的消光图，分辨率为~30”。这样的地图对于研究这个经常被观测到的银河系凸起区域应该是有用的。地图和对其应用程序有用的软件可以通过匿名ftp获得。在以(α2000, δ2000) =(18:03:20.9, -30:02:06)为中心的40‘ × 40’视场内，总消光系数为1.26 ~ 2.79等，即(l, b) =(1.001, -3.885)。该方法测定了样品的AV/E(V - I) = 2.49±0.02。
Recently Woźniak & Stanek proposed a new method to investigate interstellar extinction, based on two-band photometry, which uses red clump stars as a means to construct the reddening curve. I apply this method to the color-magnitude diagrams obtained by the Optical Gravitational Lensing Experiment to construct an extinction map of a 40' × 40' region of Baade’s window, with resolution of ~30''. Such a map should be useful for studies of this frequently observed region of the Galactic bulge. The map and software useful for its applications are available via anonymous ftp. The total extinction AV varies from 1.26 to 2.79 mag within the 40' × 40' field of view centered on (α2000, δ2000) = (18:03:20.9, -30:02:06), i.e., (l, b) = (1.001, -3.885). The ratio AV/E(V - I) = 2.49 ± 0.02 is determined with this new method.