权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Multicolor Active Galactic Nuclei Monitoring

多色活动星系核监测

基本信息

批准号：
14253001
负责人：
YOSHII Yuzuru
金额：
$ 19.22万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2004
项目状态：
已结题

项目摘要

In order to reduce vast cost of fund and manpower for the operation of long term multi-wavelength monitoring of active galactic nuclei(AGNs), we have developed the hardware and software for unmanned automatic observation and remote operation (monitoring, in fact) from Japan. We have succeeded to develop the automatic observation system (, which judges the weather is suitable for observation and select best targets during the observation), and the remote monitoring and alert system (, which helps observers to monitor the observation and makes an alert when the observation is something wrong). Now, we usually carry out the observation under the operation from Japan without on-site observer, at a consecutive period of more than a month.Along with the development of the observation system, we increased the number of targeted AGNs for multi-wavelength monitoring. Now it reaches about 70 AGNs, and about half of them are Seyfert galaxies, which are relatively nearby and low luminous. We found … More that almost all targeted Seyfert galaxies are variable, and could measure precise lag times between the optical variations and the near-infrared variations for several Seyfert galaxies that have been observed for enough period (NGC4151,Minezaki et al.2004;NGC5548,Suganuma et al.2004). We also found that the lag time is roughly proportional to the square root of the luminosity of AGN. This shows that our proposed idea of luminosity distance measurement will work well. In addition, we compared the infrared lag-time and the broad emission-line lag-time, that is, compared with the inner radius of the dust torus and the size of the broad emission-line region ofAGN, which is critical work for the unified model of Seyfert types of AGNs.Moreover, our measurement of the infrared lag-time of AGN reaches to the distance of z=0.35,which is important for the measurement of the cosmological parameters, and we succeeded to observe a type Ia supernova in a targeted AGN, which is quite useful for the calibration of the distance measurement technique. Less

为了减少长期多波长活动星系核（AGN）监测所需的大量资金和人力成本，我们从日本引进了无人自动观测和远程操作（实际上是监测）的硬件和软件。我们成功地开发了自动观测系统（，在观测过程中判断适合观测的天气并选择最佳目标）和远程监测预警系统（，帮助观测者监测观测并在观测出现问题时发出警报）。目前，我们通常是在日本的操作下进行观测，没有现场观测员，连续观测一个月以上。沿着观测系统的发展，我们增加了对AGN进行多波长监测的目标。现在它达到了大约70个活动星系核，其中大约一半是塞弗特星系，它们相对较近，亮度较低。我们发现 ...更多信息几乎所有的目标塞弗特星系都是可变的，并且可以测量已经观察了足够长时间的几个塞弗特星系的光学变化和近红外变化之间的精确滞后时间（NGC 4151，Minezaki et al.2004; NGC 5548，Suganuma et al.2004）。我们还发现滞后时间与活动星系核的光度的平方根大致成正比。这表明，我们提出的光度距离测量的想法将工作得很好。此外，我们还比较了活动星系核的红外滞后时间和宽发射线滞后时间，即与尘埃环的内径和活动星系核宽发射线区的大小进行了比较，这是建立Seyfert型活动星系核统一模型的关键工作，而且我们对活动星系核红外滞后时间的测量达到了z=0.35的距离，这对宇宙学参数的测量是非常重要的，我们成功地观测到了一个目标活动星系核中的Ia型超新星，这对距离测量技术的校准是非常有用的。少

项目成果

期刊论文数量（22）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Shigeyama, T.: "Excavation of the First Stars"Astrophysical Journal Letters. v.586. L57-L60 (2003)

Shigeyama, T.：“第一颗恒星的挖掘”天体物理学杂志快报。

DOI：
发表时间：
期刊：
影响因子：
0
作者：
通讯作者：

Inner Size of a Dust Torus in the Seyfert 1 Galaxy NGC 4151

DOI：
10.1086/381364
发表时间：
2003-11
期刊：
The Astrophysical Journal Letters
影响因子：
0
作者：
T. Minezaki;Y. Yoshii;Yukiyasu Kobayashi;K. Enya;M. Suganuma;H. Tomita;T. Aoki;B. Peterson
通讯作者：
T. Minezaki;Y. Yoshii;Yukiyasu Kobayashi;K. Enya;M. Suganuma;H. Tomita;T. Aoki;B. Peterson

Enya, K.: "JHK'Imaging Photometry of Seyfert 1 Active Galactic Nuclei and Quasars. I. Multiaperture Photometry"The Astrophysical Journal Supplement Series. v.141. 23-29 (2002)

Enya, K.：“JHKSeyfert 1 活动星系核和类星体的成像光度测量。I. 多孔径光度测量”天体物理学杂志增刊系列。