The expanding light echoes from supernova 2014J in M82
Yi Yang, Lifan Wang, Dietrich Baade, Peter Brown, Alejandro Clocchiatti, Misty Cracraft, Peter Hoflich, Justyn R. Maund, Ferdinando Patat, William B Sparks, Jas… 展开作者
Yi Yang, Lifan Wang, Dietrich Baade, Peter Brown, Alejandro Clocchiatti, Misty Cracraft, Peter Hoflich, Justyn R. Maund, Ferdinando Patat, William B Sparks, Jason Spyromilio, Xiaofeng Wang, J. Craig Wheeler
备注：
This paper has been withdrawn due to inappropriate method of analysis
We present the measurement of the size and surface brightness of the expanding light echoes from supernova (SN) 2014J in the nearby starburst galaxy M82. Hubble Space Telescope (HST) ACS/WFC images were taken ~277 and ~416 days (after the time of B-band maximum light) in the filters F475W, F606W, and F775W, each combined with the three polarizing filters: POL0V, POL60V, and POL120V. The two epochs' imaging reveals the time evolution of at least two major echoes. Three concentric bright regions between position angles (PA, 0^{\circ} from North, counterclockwise). 80^{\circ} ~ 170^{\circ} have projected radius of 0.60" on the sky on ~277 days and expanding to 0.75" on ~416 days, corresponding to scattering materials at a foreground distance of 222\pm37 pc. Another fainter but evident light echo extending over a wide range of PA has radii of 0.75" and 0.96" on ~277 and ~416 days. This corresponds to scattering material at a foreground distance of 367\pm61 pc. Multiple light echoes with S/N > 2.5 reside at smaller radii on ~277 days but become less significant on ~416 days indicating a complex structure of foreground interstellar medium (ISM). The light echo shows bluer color than predicted under a Rayleigh scattering case. We also found the light echo brightened from V_{echo}=21.68\pm0.07 on 2014 September 5, to V_{echo}=21.05\pm0.08 on 2014 November 6, suggesting an enhancement of echoing materials at different distances projected on to the plane of the sky.
$Hubble~Space~Telescope$ Reveals Spectacular Light Echoes Associated with the Stripped-envelope Supernova 2016adj in the Iconic Dust Lane of Centaurus A
Expanding molecular bubble surrounding Tycho's supernova remnant (SN 1572) observed with IRAM 30 m telescope: evidence for a single-degenerate progenitor
Ia超新星的前身是单简并还是双简并白矮星系统一直是一个备受争议的话题。为了解决Ia型第谷超新星遗迹（SNR）SN 1572的起源，我们进行了$^{12}$ CO J=2-1映射和使用IRAM 30米望远镜对遗迹进行3毫米线测量。我们表明，第谷是包围着一个clusterous分子泡在当地的标准的$\sim 61$公里的$^{-1}$的速度为$\sim 4.5$公里的$^{-1}$，并有一个质量为$\sim 220$ M $_\odot$（在距离为2.5千秒差距）。增强的$^{12}$ CO J=2-1线发射相对于$^{12}$ CO J=1-0发射和可能的线加宽（在速度范围$-64$到$-60$ km s $^{-1}$）被发现在东北边界的SNR，在那里的壳变形和减速。这些功能，结合膨胀的分子泡和第谷之间的形态对应关系，表明SNR是与泡沫在速度范围$-66$到$-57$ km s $^{-1}$。最合理的起源膨胀的泡沫是快速流出（速度为数百公里秒$^{-1}$）驱动的WD附近，因为它吸积的物质从一个非退化的伴星。在低密度风吹气泡中，信噪比一直在扩大，冲击波刚刚到达分子腔壁。在低密度风吹气泡中，信噪比一直在扩大，冲击波刚刚到达分子腔壁。这是第一次明确检测到Ia型SNR的祖先驱动的膨胀气泡，这构成了Ia型SN的单一简并祖先的证据。
An Early & Comprehensive Millimeter and Centimeter Wave and X-ray Study of Supernova 2011dh: A Non-Equipartition Blastwave Expanding into A Massive Stellar Wind
