UWISH2——UKIRT 宽场红外 H2 巡天
星系天体物理
2015-05-20 v1
摘要
我们介绍了一项对第一银道象限（10°<l<65°；-1.3°<b<+1.3°）进行无偏近红外窄带成像巡天的目标和初步结果。该区域涵盖了北半球大部分巨分子云和大质量恒星形成区。巡天以 H2 的 1-0S(1) 振转谱线为中心，该谱线已被证实是恒星形成区、演化恒星周围以及超新星遗迹中热致密分子气体的示踪剂。这些观测补充了现有和即将开展的光度巡天（Spitzer-GLIMPSE、UKIDSS-GPS、JCMT-JPS、AKARI、Herschel Hi-GAL 等），尽管我们探测的是这些宽带巡天未覆盖的恒星形成动态活跃成分。我们的窄带巡天目前已完成超过 60%。图像的中值视宁度为 0.73 角秒。图像对点源的 5σ 探测极限为 K=18 星等，面亮度极限为 10^-19 W m^-2 arcsec^-2（在典型视宁度下平均）。低质量和高质量年轻恒星天体（YSO）的喷流和外流均被揭示，同时还有新的行星状星云，以及通过与 UKIDSS GPS 早期 K 波段观测比较发现的众多变星。凭借其优越的空间分辨率，UWISH2 数据还有望揭示 GLIMPSE 巡天中发现的许多扩展绿色天体的真实性质。
引用
@article{arxiv.1012.0782,
title = {UWISH2 -- The UKIRT Widefield Infrared Survey for H2},
author = {D. and Froebrich and C. J. and Davis and G. and Ioannidis and T. M. and Gledhill and M. and Takami and A. and Chrysostomou and J. and Drew and J. and Eislöffel and A. and Gosling and R. and Gredel and J. and Hatchell and K. W. and Hodapp and M. S. N. and Kumar and P. W. and Lucas and H. and Matthews and M. G. and Rawlings and M. D. and Smith and B. and Stecklum and W. P. and Varricatt and H. T. and Lee and P. S. and Teixeira and C. A. and Aspin and T. and Khanzadyan and J. and Karr and H. -J. and Kim and B. -C. and Koo and J. J. and Lee and Y. -H. and Lee and T. Y. and Magakian and T. A. and Movsessian and E. H. and Nikogossian and T. S. and Pyo and T. and Stanke},
journal= {arXiv preprint arXiv:1012.0782},
year = {2015}
}
备注
14pages, 8figures, 2tables, accepted for publication by MNRAS, a version with higher resolution figures can be found at http://astro.kent.ac.uk/~df/