PMAS observing campaign at Calar Alto 3.5m Telescope - Local host properties of neary type Ia supernovae

Calar Alto 3.5m 望远镜的 PMAS 观测活动 - 附近 Ia 型超新星的本地宿主属性

• 批准号: 285768002
• 负责人: Professor Dr. Martin Matthias Roth
• 金额: --
• 依托单位: Leibniz-Institut für Astrophysik Potsdam (AIP)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2015
• 资助国家: 德国
• 起止时间: 2014-12-31 至 2015-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/285768002?language=en
• 关键词: PMAS; observing; campaign; Calar; Alto

Type Ia supernovae (SNe Ia) are today the strongest demonstrated technique for measuring the dark energy equation of state and a key tools in the direct measurement of the Hubble parameter H0. However, their progenitors are as yet undetermined, which suggests potential uncontrolled cosmological biases. Hosts studies have highlighted correlation between SNe Ia and global properties sufficient in size to induce systematic errors. In this context, Rigault et al. 2013 demonstrated that analyzing the close environment of the SN enabled better understanding of those biases. Here, we offer to go a step further by conducting the first study of the stellar populations in the direct environment of very nearby SNe Ia. This should significantly mprove our control on SN-cosmological environmental biases.

Ia 型超新星 (SNe Ia) 是当今最强大的测量暗能量状态方程的技术，也是直接测量哈勃参数 H0 的关键工具。然而，它们的祖先尚未确定，这表明潜在的不受控制的宇宙学偏差。宿主研究强调了 SNe Ia 和全局属性之间的相关性，其大小足以引起系统误差。在这种背景下，Rigault 等人。 2013 年证明，分析 SN 的封闭环境可以更好地理解这些偏见。在这里，我们提出更进一步，对非常邻近的超新星 Ia 直接环境中的恒星种群进行首次研究。这应该会显着改善我们对超新星宇宙环境偏差的控制。