论文标题
搜索大型双眼望远镜的失败超新星：N6946-BH1，仍然没有星星
The Search for Failed Supernovae with the Large Binocular Telescope: N6946-BH1, Still No Star
论文作者
论文摘要
我们为失败的超新星候选N6946-BH1提供了新的大型双目望远镜，哈勃太空望远镜和Spitzer空间望远镜数据。我们还报告了与钱德拉（Chandra）一起检测候选人的尝试不成功。约30万Lsun Red Superpiant祖先在2009年爆发，此后在光学中消失了。在2008年5月至2019年10月的LBT数据中，源R波段发光度增加的上限为2000 LSUN。 HST和Spitzer的观察表明，该消息来源在2015年10月至2017年9月之间逐渐消失，在2015年10月至9月之间，H Band（F160W）淡出了2倍。光谱能量分布的模型与瞬时形成的持续风或尘埃遮盖的幸存恒星不一致。 N6946-BH1的消失与失败的超新星保持一致。
We present new Large Binocular Telescope, Hubble Space Telescope, and Spitzer Space Telescope data for the failed supernova candidate N6946-BH1. We also report an unsuccessful attempt to detect the candidate with Chandra. The ~300,000 Lsun red supergiant progenitor underwent an outburst in 2009 and has since disappeared in the optical. In the LBT data from May 2008 through October 2019, the upper limit on any increase in the R-band luminosity of the source is 2000 Lsun. HST and Spitzer observations show that the source continued to fade in the near-IR and mid-IR, fading by approximately a factor of 2 between October 2015 and September 2017 to 2900 Lsun at H band (F160W). Models of the spectral energy distribution are inconsistent with a surviving star obscured either by an ongoing wind or dust formed in the transient. The disappearance of N6946-BH1 remains consistent with a failed supernova.
