Spectroscopic Study of Galaxies with a Low-Noise High-Sensitivity Camera.

使用低噪声高灵敏度相机对星系进行光谱研究。

• 批准号: 62460008
• 负责人: IYE Masanori
• 金额: $ 4.74万
• 依托单位: National Astronomical Observatory (1988)The University of Tokyo (1987)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1987
• 资助国家: 日本
• 起止时间: 1987 至 1988
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-62460008/
• 关键词: CCD Camera; Low Noise; High Sensitivity; Spectroscopy; Seyfert Galaxies; Star Formation; Liquid Nitrogen; 低雑音; 高感度; 近赤外線; CCD(電荷結合素子); 天体観測; 活動銀河; スペクトル; 特異天体; 低雑音高感度受光素子

In this project we have pursued spectroscopic studies of galaxies and developed a low noise CCD camera.High dispersion spectra of two Seyfert 2 galaxies, NGC4388 and Tololo74, were analyzed in detail to reveal the presence of substructure in the so-called narrow line region. Analyses of two star burst galaxies, Tololo1924-416 and Markarian 717, also contributed to elucidate the chemical abundance and the internal kinematics of these galaxies. The detection of line-ratio anomaly for oxygen forbidden lines and the detection of a shell structure for Markarian 717 are totally new results. The night sky emission spectra were studied in order to enable exact subtraction of sky spectra from the raw spectra of faint galaxies. Especially noteworthy is the establishment of the observing and analyzing procedures in the near infrared spectral region (700-1000 nm), where the CCD camera enjoys its high guantum efficiency.To help spectroscopic studies of galaxies, multi-color imaging observations and objective prism spectroscopic observations of galaxies were pursued with new CCD cameras and the high performance of these cameras was verified.

在这个项目中，我们进行了星系的光谱研究，并开发了一种低噪声CCD相机。对两个Seyfert 2星系NGC4388和Tololo74的高色散光谱进行了详细分析，揭示了在所谓的窄线区域存在亚结构。对两个恒星爆发星系tololo24 -416和Markarian 717的分析也有助于阐明这些星系的化学丰度和内部运动学。氧禁线线比异常的检测和Markarian 717壳结构的检测都是全新的成果。研究夜空发射光谱是为了精确地从暗星系的原始光谱中减去天空光谱。特别值得注意的是建立了近红外光谱区（700-1000 nm）的观测分析程序，CCD相机在该区域具有较高的量子效率。为了帮助星系的光谱研究，利用新型CCD相机对星系进行了多色成像观测和客观棱镜光谱观测，并验证了这些相机的高性能。

项目成果

Taniguchi,Y.: Astron.Astrophys.accepted. (1989)

Taniguchi,Y.：Astron.Astrophys.已接受。

家正則他: Astronomy and Astrophysics. 186. 84-94 (1987)

Masanori Ie 等人：天文学和天体物理学 186. 84-94 (1987)

Iye,M.: Universal Academy Press. 187-188 (1989)

Iye，M.：环球学院出版社。

Iye, M.: "Search for Primordial Galaxies" Universal Academy Press. 187-188 (1989)

Iye, M.：“寻找原始星系”环球学院出版社。

Kodaira,K.: PASJ. 40. 535-546 (1988)

小平，K.：PASJ。