The Pantheon+ Analysis: The Full Data Set and Light-curve Release
The Pantheon+ Analysis: The Full Data Set and Light-curve Release
复制标题
DOI：
10.3847/1538-4357/ac8b7a
复制
发表时间：
2021-12
期刊：
影响因子：
--
通讯作者：
D. Scolnic;D. Brout;A. Carr;A. Riess;T. Davis;Arianna M. Dwomoh;David O. Jones;Noor Ali;Pranav Charvu;R. Chen;E. Peterson;B. Popovic;B. Rose;C. Wood;P. Brown;K. Chambers;D. Coulter;K. Dettman;G. Dimitriadis;A. Filippenko;R. Foley;S. Jha;C. Kilpatrick;R. Kirshner;Yen-Chen Pan;A. Rest;C. Rojas-Bravo;M. Siebert;B. Stahl;Wei Zheng
中科院分区：
文献类型：
--
作者：
D. Scolnic;D. Brout;A. Carr;A. Riess;T. Davis;Arianna M. Dwomoh;David O. Jones;Noor Ali;Pranav Charvu;R. Chen;E. Peterson;B. Popovic;B. Rose;C. Wood;P. Brown;K. Chambers;D. Coulter;K. Dettman;G. Dimitriadis;A. Filippenko;R. Foley;S. Jha;C. Kilpatrick;R. Kirshner;Yen-Chen Pan;A. Rest;C. Rojas-Bravo;M. Siebert;B. Stahl;Wei Zheng
在这里，我们给出了1550颗独特的光谱确认的Ia型超新星(SNE Ia)的1701条光曲线，它将被用来推断宇宙学参数，作为Pantheon+SN分析的一部分，以及用于暗能量距离阶梯分析的超新星和H0的状态方程。这项工作是一系列工作的一部分，这些工作广泛地回顾了SNE Ia的红移、特殊速度、光度定标和本征散射模型。光曲线的总数，由18个不同的调查汇编而成，比第一次万神殿分析(1048 SNE)有了显著的增加，特别是在低红移(Z)时。此外，与万神殿分析不同的是，我们包括了具有z<；0.01的SNE的光曲线，使得SN系统协方差可以包括在哈勃常数(H0)和暗能量状态方程参数(W)的联合测量中。我们用大样本比较了由多个观测观测到的151个SNE Ia的性质，以及在同一宿主星系中发现的12对/三对“SN兄弟”--SNE。在Brout等人的配文中讨论了距离测量、偏差修正的应用和宇宙学参数的推断，Riess等人讨论了H0的确定。这些分析将以∼3%的精度测量w，以∼1 km S−1 Mpc−1的精度测量H0。
Here we present 1701 light curves of 1550 unique, spectroscopically confirmed Type Ia supernovae (SNe Ia) that will be used to infer cosmological parameters as part of the Pantheon+ SN analysis and the Supernovae and H 0 for the Equation of State of dark energy distance-ladder analysis. This effort is one part of a series of works that perform an extensive review of redshifts, peculiar velocities, photometric calibration, and intrinsic-scatter models of SNe Ia. The total number of light curves, which are compiled across 18 different surveys, is a significant increase from the first Pantheon analysis (1048 SNe), particularly at low redshift (z). Furthermore, unlike in the Pantheon analysis, we include light curves for SNe with z < 0.01 such that SN systematic covariance can be included in a joint measurement of the Hubble constant (H 0) and the dark energy equation-of-state parameter (w). We use the large sample to compare properties of 151 SNe Ia observed by multiple surveys and 12 pairs/triplets of “SN siblings”—SNe found in the same host galaxy. Distance measurements, application of bias corrections, and inference of cosmological parameters are discussed in the companion paper by Brout et al., and the determination of H 0 is discussed by Riess et al. These analyses will measure w with ∼3% precision and H 0 with ∼1 km s−1 Mpc−1 precision.