Study on physics of supernovae

超新星物理研究

• 批准号: 23740175
• 负责人: FOLATELLI Gaston
• 金额: $ 2.16万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23740175/
• 关键词: 宇宙物理学; 宇宙論; 超新星; 分光学; Supernova spectroscopy; Type Ia supernovae; Unburned material; Dust extinction; Supernova progenitors; Distance precision; Core-collapse supernovae; 宇宙物理（実験）

We have used intensive observations of supernovae (SNe), coupled with modelling capabilities provided by collaborators to study the physical nature of these events. The power of our observations resided in the availability of early-time spectroscopic data, obtained at short intervals, and covering a wide wavelength range. This wealth of information allowed us perform studies on different types of SNe. One highlight of the results is the detection of material that is left unburned by the explosion of thermonuclear SNe, which we found to be much more common than previously thought. On core-collapse SNe, we were able to distinguish a special class of hydrogen-poor SNe that show peculiarly low expansion velocities, a feature that is challenging for current explosion models.

我们使用了超新星的密集观测(SNE)，再加上合作者提供的建模功能来研究这些事件的物理性质。我们观测的力量在于早期光谱数据的可用性，这些数据以短时间间隔获得，覆盖了广泛的波长范围。这些丰富的信息使我们能够对不同类型的SNE进行研究。结果的一个亮点是探测到了热核SNE爆炸留下的未燃烧的物质，我们发现这种物质比之前认为的要常见得多。在核坍塌的近地天体上，我们能够区分出一类特殊的贫氢近地天体，它们表现出极低的膨胀速度，这一特征对当前的爆炸模型是具有挑战性的。

项目成果

SPECTROSCOPY OF TYPE Ia SUPERNOVAE BY THE CARNEGIE SUPERNOVA PROJECT

• DOI: 10.1088/0004-637x/773/1/53
• 发表时间: 2013-05
• 期刊: The Astrophysical Journal
• 作者: G. Folatelli;N. Morrell;M. Phillips;E. Hsiao;A. Campillay;C. Contreras;S. Castellón;M. Hamuy-

Low luminosity Type II supernovae - II. Pointing towards moderate mass precursors

• DOI: 10.1093/mnras/stu156
• 发表时间: 2014-01
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: S. Spiro;A. Pastorello;M. L. Pumo;L. Zampieri;M. Turatto;S. Smartt;S. Benetti;E. Cappellaro

A study of the color diversity around maximum light in Type Ia supernovae

• DOI: 10.1051/0004-6361/201117778
• 发表时间: 2011-10
• 期刊: Astronomy and Astrophysics
• 影响因子: 6.5
• 作者: R. Cartier;F. Fórster;P. Coppi;M. Hamuy;K. Maeda;G. Pignata;Gaston Folatelli . U. de Chile;Yale;Ipmu;U. A. Bello

Type II Plateau supernovae as metallicity probes of the Universe

• DOI: 10.1093/mnras/stu417
• 发表时间: 2014-03
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: L. Dessart;C. Gutiérrez;M. Hamuy;D. Hillier;T. Lanz;J. Anderson;G. Folatelli;W. Freedman

THE CARNEGIE SUPERNOVA PROJECT: SECOND PHOTOMETRY DATA RELEASE OF LOW-REDSHIFT TYPE Ia SUPERNOVAE

• DOI: 10.1088/0004-6256/142/5/156
• 发表时间: 2010-02
• 期刊: The Astronomical Journal
• 作者: M. Stritzinger;M. Phillips;S. LuisBoldt;C. Burns;A. Campillay;C. Contreras;S. González;G. Folatell