Accurate Measurements of the Expansion of the Universe with imaging and spectroscopic observations of type Ia Supernovae

通过 Ia 型超新星的成像和光谱观测精确测量宇宙的膨胀

• 批准号: 15204012
• 负责人: DOI Mamoru
• 金额: $ 32.36万
• 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: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15204012/
• 关键词: supernova; cosmological expansion; imaging spectroscopy

The main purpose of this research project is to carry out imaging and spectroscopic observations of type la supernovae to measure cosmological expansion of the universe. We successfully found and measured distant supernovae with international collaboration programs, Supernova Cosmology Project and Sloan Digital Sky Survey.We found about 40 distant supernovae, 15 of which are type Ia supernovae. Some of those were found with Suprime-Cam, and some of those were found with Hubble Space Telescope. We carried out follow-up observations with Subaru and other large telescopes. We also found and observed nearby supernovae. Sloan Digital Sky Survey (SDSS) Supernova project so far found about 300 nearby supernovae, and we took more than 50 spectra with Subaru. Supernova data we have obtained are unique and will be able to give new constraints for cosmological models, although the analysis is still underway.Another activity of this research program was to develop a new imaging spectrograph for cosmology. We successfully build a 15-color band simultaneous imager. We have successfully carried out commissioning observations at 1.5-m Kanata telescope, Higashi Hiroshima Astronomical Observatory, Hiroshima University. Although no supernova observations have been made, the instrument is working well. This kind of instruments enable us to take spectroscopic information as well as imaging information for cosmological expansion measurements, and we developed basic techniques and knowledge through current instrumentation.We also studied cosmological expansion with the SDSS galaxy survey. SDSS galaxy distributions with Cosmic Microwave Background fluctuation measurements gave new constraints of cosmological parameters.

该研究项目的主要目的是对la型超新星进行成像和光谱观测，以测量宇宙的宇宙膨胀。我们与国际合作计划、超新星宇宙学计划和斯隆数字巡天计划成功发现并测量了远距离超新星，发现了约40颗远距离超新星，其中15颗为Ia型超新星。其中一些是用Suprime-Cam发现的，还有一些是用哈勃太空望远镜发现的。我们用斯巴鲁和其他大型望远镜进行了后续观测。我们还发现并观测了附近的超新星。斯隆数字巡天（SDSS）超新星项目到目前为止发现了大约300颗附近的超新星，我们用斯巴鲁拍摄了50多个光谱。我们获得的超新星数据是独一无二的，将能够为宇宙学模型提供新的约束，尽管分析仍在进行中。该研究计划的另一项活动是开发一种新的宇宙学成像光谱仪。我们成功地建立了一个15色波段同时成像仪。我们已经成功地在广岛大学东广岛天文台的1.5米金田望远镜上进行了试运行观测。虽然没有超新星观测，但仪器工作良好。这类仪器使我们能够获得光谱信息以及宇宙膨胀测量的成像信息，我们通过现有的仪器开发了基本的技术和知识，我们还利用SDSS星系巡天研究了宇宙膨胀。宇宙微波背景涨落测量的SDSS星系分布给出了宇宙学参数的新约束。

项目成果

Spectroscopic confirmation of high-redshift supernovae with the ESO VLT

• DOI: 10.1051/0004-6361:20041504
• 发表时间: 2004-10
• 期刊: Astronomy and Astrophysics
• 影响因子: 6.5
• 作者: C. Lidman;D. Howell;D. Howell;G. Folatelli;G. Garavini;G. Garavini;S. Nobili;S. Nobili;G. Aldering;R. Amanullah;P. Antilogus;P. Astier;G. Blanc;M. S. Burns;A. Conley;A. Conley;S. Deustua;M. Doi;R. Ellis;S. Fabbro;V. Fadeyev;R. Gibbons;G. Goldhaber;G. Goldhaber;A. Goobar;D. Groom;I. Hook;N. Kashikawa;A. Kim;R. Knop;Brian C. Lee;J. Méndez;T. Morokuma;K. Motohara;P. Nugent;R. Pain;S. Perlmutter;S. Perlmutter;V. Prasad;R. Quimby;J. Raux;N. Regnault;N. Regnault;P. Ruíz-Lapuente;G. Sainton;B. E. Schaefer;K. Schahmaneche;E. Smith;A. Spadafora;V. Stanishev;N. Walton;Lifan Wang;W. M. Wood-Vasey;W. M. Wood-Vasey;N. Yasuda

The Supernova Cosmology Project, Spectroscopic confirmation of high-redshift supernovae with the ESO VLT.

超新星宇宙学项目，使用 ESO VLT 对高红移超新星进行光谱确认。

• 发表时间: 2005
• 期刊: Astronomy and Astrophysics 430
• 作者: Lidman;C.et al.(47 authors including Doi;M.;Motohara;K.;Yasuda;N.)
• 通讯作者: N.)

The Three-Dimensional Power Spectrum of Galaxies from the Sloan Digital Sky Survey

• DOI: 10.1086/382125
• 发表时间: 2003-10
• 期刊: The Astrophysical Journal
• 作者: M. Tegmark;M. Blanton;M. Strauss;F. Hoyle;D. Schlegel;R. Scoccimarro;M. Vogeley;D. Weinberg

Cosmological constraints from the SDSS luminous red galaxies

• DOI: 10.1103/physrevd.74.123507
• 发表时间: 2006-08
• 期刊: Physical Review D
• 影响因子: 5
• 作者: Max Tegmark;D. Eisenstein;M. Strauss;D. Weinberg;M. Blanton;J. Frieman;M. Fukugita;J. Gunn

Searching for a Companion Star of Tycho's Type Ia Supernova with Optical Spectroscopic Observations

• DOI: 10.1093/pasj/59.4.811
• 发表时间: 2006-08
• 期刊: Publications of the Astronomical Society of Japan
• 影响因子: 2.3
• 作者: Y. Ihara;Jin Ozaki;M. Doi;T. Shigeyama;N. Kashikawa;Y. Komiyama;T. Hattori