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An infrared study of the bi-polar outflow region GGD 12-15

机译:双极流出区GGD 12-15的红外研究

摘要

Infrared observations from 1 to 100 microns are presented for the region associated with a bipolar CO outflow source near the nebulous objects GGD 12 to 15. A luminous far-infrared source was found associated with a radio-continuum source in the area. This object appears to be a compact HII region around a nearly main-sequence BO star. A faint 20 micron source was also discovered at the position of an H2O maser 3O deg northwest of the HII region. This object appears to be associated with but not coincident with a 2 micron reflection nebula. This structure serves as evidence for a non-spherically symmetric, possibly disk-like dust distribution around the exciting star for the maser. This object probably powers the bi-polar CO outflow although its luminosity is less than 10% that of the star which excites the compact HII region. A number of other 2 micron sources found in the area are probably members of a recently formed cluster.
机译:给出了与星云GGD 12至15附近的双极CO流出源相关的区域的从1到100微米的红外观测结果。发现该区域的发光远红外源与无线电连续谱源相关。这个天体似乎是围绕近主序BO星的紧凑HII区域。在HII区域西北3O度的H2O maser位置也发现了一个微弱的20微米源。这个物体似乎与2微米反射星云有关,但并不重合。这种结构可以证明,在主激波周围,非球形对称的,可能是圆盘状的尘埃分布。尽管该物体的光度不到激发紧凑型HII区域的恒星的光度的10%,但它可能为双极CO的流出提供了动力。在该地区发现的许多其他2微米源可能是最近形成的星团的成员。

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