Observations with Infrared Space Observatory (ISO)

红外空间天文台 (ISO) 的观测

• 批准号: 09044057
• 负责人: KAWARA Kimiaki
• 金额: $ 5.18万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for international Scientific Research
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09044057/
• 关键词: Infrared; Galaxies; Dust; Star formation; Galaxy formation; Galaxy evolution; Stars; Late-type stars; 晩期型星; 赤外線宇宙天文台(ISO); 初期銀河; 星間物質; 星の誕生; 恒星進化; 漸近巨星枝星(AGB星); 質量放出現象

This project intends to search for forming galaxies and investigate physics at the last evolutionary stage of stars by using the liquid-helium-cooled space telescope onboard the Infrared Space Observatory (ISO) via international joint research. Our ISO observations include (1) ISO deep infrared survey in the Lockman Hole to search for forming galaxies which might have been missed in the optical surveys, (2) ISO multicolor imaging of central parts of star clusters in the Magellanic Clouds to study mass-loss of very-late stars, and (3) spectroscopic mapping of emission lines to probe the photo-ionized structure near young hot stars.To achieve the above objectives, we had to understand the characteristics of the ISO instrument in space through examining ISO data taken for calibration, and carry out follow-up observations from the ground.We were allowed to send six scientists to France to analyze the characteristics of the ISO instrument. As a result, we now understand the ISO instrument and their behavior much better than before, providing the firm basis for reducing data. Accordingly, we have almost completed the data reduction, which is especially true to the ISO deep infrared survey project.Follow-up observations were initally planned to carry out KPNO and IRAM.Subsequent efforts made by collaborators for seeking better observing facilities made it possible to use the 10m sub-millimeter telescope in the Caltech Sub-millimeter Observatory and the 2.2m optical telescope of the University of Hawaii, both located in the Mauna Kea Observatory, Hawaii, USA.The follow-up observations have just started, which will be continued for the next several months.During this project, we found (1) the surface density of ISO far-infrared sources is 10 times higher than expected from the non-evolution model, and (2) very late stars are rich in molecules and dust which cannot be explained by any existing models of stellar atmosphere.

该项目打算通过国际联合研究，利用红外空间观测站上的液氦冷却空间望远镜，寻找正在形成的星系，并研究恒星演化最后阶段的物理学。我们的ISO观测包括：（1）洛克曼洞ISO深红外巡天，寻找光学巡天中可能遗漏的正在形成的星系;（2）麦哲伦云中星星团中心部分的ISO多色成像，研究极晚期恒星的质量损失;（3）发射线光谱绘图，探测年轻热星附近的光电离结构。为了实现上述目标，我们要通过检查ISO的标定数据，了解ISO仪器在太空中的特性，并进行地面跟踪观测，允许我们派6名科学家到法国分析ISO仪器的特性。因此，我们现在比以前更好地了解ISO工具及其行为，为减少数据提供了坚实的基础。在此基础上，我们基本完成了ISO深红外巡天项目的数据处理工作，并计划进行KPNO和IRAM的后续观测，随后合作者为寻求更好的观测设备而努力，使加州理工大学亚毫米波天文台的10米亚毫米波望远镜和夏威夷大学的2.2米光学望远镜成为可能。在这次观测中，我们发现：（1）ISO远红外源的面密度比非演化模型估计的高10倍，（2）非常晚的恒星富含分子和尘埃，这是任何现有的恒星大气模型都无法解释的。

项目成果

AOKI,W.: "Infrared spectra of carbon stars observed by the ISO SWS" Astronomy and Astrophysics. 340. 222-231 (1998)

AOKI,W.：“ISO SWS 观测到的碳星的红外光谱”天文学和天体物理学。

HAMMERSLEY,P.L.: "Infrared standards for ISO.I." Astronomy and Astrophysics Supplement. 128. 207-219 (1998)

HAMMERSLEY,P.L.：“ISO.I 的红外标准”

FLORES,H.: "Deep Galaxy survey at 6.75mu m with the ISO satellite" Astronomy and Astrophysics. 343. 389-398 (1999)

FLORES,H.：“利用 ISO 卫星进行 6.75μm 深部星系勘测”天文学和天体物理学。

AUSSEL,H.: "ISOCAM observations of the Hubble Deep Field reduced with the PRETI method" Astronomy and Astrophysics. 342. 313-336 (1999)

AUSSEL,H.：“使用 PRETI 方法减少哈勃深场的 ISOCAM 观测”天文学和天体物理学。

CILIEGI,P.: "A deep VLA survey at 20 cm of the ISO ELAIS survey region" Monthly Notices of the Royal Astronomical Society. 302. 222-244 (1999)

CILIEGI,P.：“ISO ELAIS 勘测区域 20 厘米处的深度 VLA 勘测”皇家天文学会月刊。