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arXiv 1706.01030astro-ph.HE
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II型超新星的光变曲线和CfA的光谱

Type II Supernova Light Curves and Spectra From the CfA

Malcolm Hicken, Andrew S. Friedman, Stephane Blondin, Peter Challis, Perry Berlind, Mike Calkins, Gil Esquerdo, Thomas Matheson, Maryam Modjaz, Armin Rest, Robert P. Kirshner

摘要:

我们提出了60光谱确认的超新星(SN)的多波段光度测量:39 SN II/IIP,19 IIn,一个IIb和一个最初被归类为IIn,但后来被归类为Ibn。其中46个只有光学光度法,6个只有近红外(NIR)光度法,8个既有光学光度法又有NIR光度法。样品的平均红移为0.016。我们还提出了192光谱的47 60 SN。所有数据都是公开的。SN II/IIP有26条光学光变曲线和两条近红外光变曲线,红移z > 0.01,其中一些光变曲线可能为宇宙学应用提供有用的距离。所有测光都是在2000年至2011年期间在弗雷德·劳伦斯·惠普尔天文台(FLWO)通过1.2米和1.3米的PAIRITEL望远镜分别获得的光学和近红外。在$u'UBVRIr'i'JHK_s$条带的子集中观察到每个SN。共有2932个光学和816个近红外光曲线点。使用FLWO 1.5 m Tillinghast望远镜与FAST摄谱仪和MMT望远镜与蓝通道摄谱仪获得光谱。我们的光度测定与文献中的其他样品有合理的一致性。与Pan-STARRS的比较表明,我们的单个恒星序列中有三分之二的加权平均V偏移在$\pm$ 0.02 mag.在比较我们的标准系统SN光变曲线与常见的卡内基超新星项目对象使用其颜色项,我们发现,大约四分之三的平均差异在$\pm$ 0.04 mag.这项工作和文献的数据将提供洞察SN II爆炸,帮助发展测光SN分类方法,并有助于将其用作宇宙学距离指标。

英文摘要:

We present multiband photometry of 60 spectroscopically-confirmed supernovae (SN): 39 SN II/IIP, 19 IIn, one IIb and one that was originally classified as a IIn but later as a Ibn. Forty-six have only optical photometry, six have only near infrared (NIR) photometry and eight have both optical and NIR. The median redshift of the sample is 0.016. We also present 192 optical spectra for 47 of the 60 SN. All data are publicly available. There are 26 optical and two NIR light curves of SN II/IIP with redshifts z > 0.01, some of which may give rise to useful distances for cosmological applications. All photometry was obtained between 2000 and 2011 at the Fred Lawrence Whipple Observatory (FLWO), via the 1.2m and 1.3m PAIRITEL telescopes for the optical and NIR, respectively. Each SN was observed in a subset of the $u'UBVRIr'i'JHK_s$ bands. There are a total of 2932 optical and 816 NIR light curve points. Optical spectra were obtained using the FLWO 1.5m Tillinghast telescope with the FAST spectrograph and the MMT Telescope with the Blue Channel Spectrograph. Our photometry is in reasonable agreement with other samples from the literature. Comparison with Pan-STARRS shows that two-thirds of our individual star sequences have weighted-mean V offsets within $\pm$0.02 mag. In comparing our standard-system SN light curves with common Carnegie Supernova Project objects using their color terms, we found that roughly three-quarters have average differences within $\pm$0.04 mag. The data from this work and the literature will provide insight into SN II explosions, help with developing methods for photometric SN classification, and contribute to their use as cosmological distance indicators.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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