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High Resolution Infrared Survey of the Southern Sky

南方天空的高分辨率红外巡天

基本信息

批准号：
13573001
负责人：
NAGATA Tetsuya
金额：
$ 8.06万
依托单位：
KYOTO UNIVERSITY (2004)Nagoya University (2001-2003)
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2004
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13573001/
关键词：
Optical & Infrared Telescope Infrared Survey Dark Cloud Milky Way Star Forming Region Globule Interstellar Dust Galaxy 星形成領域銀河団

项目摘要

We have obtained unprecedented data of the southern sky, attaching the 3-band simultaneous infrared camera SIRIUS on the 1.4-m telescope constructed at South African Astronomical Observatory.We first compared the mass functions of the star-forming regions such as W3 and NGC7538 with the newly obtained southern star-forming regions in the first publications. Next, in the Lupus dark cloud, we obtained infrared images down to very faint levels, and found a shining nebula in the near-infrared. We concluded that the nebula reflects the background starlight ; the size distribution of the dust grains should stretch to fairly large sizes, which constrains the evolution of the dust grains in dark clouds.In the star-forming region S269, we found a large number of infrared sources.From the survey of the Vela giant molecular cloud, we discovered an extremely dense cluster of young (2-3Myr) stars. It has an about 0.5pc radius and at least 350 stars, with the heavier stars toward the center. We surveyed M16 and M17, where high mass stars are forming, and also the star-forming regions Chamaeleon and Ophiucus.The Great Attractor region was also surveyed for the galaxies behind the Galactic plane. The survey of the 30-arcmin region abound the radio galaxy PKS1343-601 produced several dozens of galaxies, but the number of them is far from a rich cluster of galaxies.

我们在南非天文台的1.4米望远镜上安装了三波段同步红外相机SIRIUS，获得了前所未有的南天数据，并首次将W3和NGC 7538等恒星形成区的质量函数与最新获得的南天恒星形成区的质量函数进行了比较。接下来，在狼疮暗云中，我们获得了非常微弱的红外图像，并在近红外波段发现了一个闪亮的星云。结果表明，星云反射背景星光，尘埃颗粒的尺寸分布应延伸到相当大的尺寸，这限制了暗星云中尘埃颗粒的演化;在恒星形成区S269中，我们发现了大量的红外源;在船帆座巨分子云的巡天中，我们发现了一个非常致密的年轻（2- 300万年）恒星团。它的半径约为0.5pc，至少有350颗恒星，其中较重的恒星朝向中心。我们调查了M16和M17，那里是高质量恒星形成的地方，也调查了恒星形成区Chamaeleon和Ophiucus，还调查了银河平面后面的星系的大吸引子区域。在射电星系PKS 1343 -601的30弧分区域的巡天观测中，产生了几十个星系，但它们的数量远远不是一个丰富的星系团。