论文标题
与Muse的早期类型星系中发现Novae：NGC 1404中的机会，还有十二名候选人来自档案搜索
Discovering novae in early-type galaxies with MUSE: A chance find in NGC 1404, and twelve more candidates from an archival search
论文作者
论文摘要
我报告发现在巨大的椭圆形Galaxy NGC 1404的郊区发现了瞬态的宽h $α$点源，该源是在Muse Integral Field光谱仪进行的档案观测中发现的。 H $α$线的宽度为1950 km s $^{ - 1} $ fwhm，以及（4.1 $ \ pm $ 0.1）$ \ times $ 10 $^{36} $ erg s $^{ - 1} $，与Nova Bubers一致，并且在Muse数据获得的nova buda nova burs nova bublast上不一致。在h $α$瞬态前14年，在同一位置（$ <$ 1的Arcsec）中检测到了瞬态软X射线源。如果X射线和H $α$排放来自同一对象，则源可能是一个短时间的复发Nova，带有巨大的白色矮人吸积，因此可能是型型超新星祖细胞。为附近的一组早期类型的星系选择Broad-H $α$点源档案源，我发现了十二名NOVA候选人与NGC 1404相似的属性，其中包括NGC 1380中的5个，包括NGC 4365中的4个候选人。确认这四个是在$ \ sim $ 1年的时间表上进行的暂时性的，并支持了他们作为Novae的身份。
I report the discovery of a transient broad-H$α$ point source in the outskirts of the giant elliptical galaxy NGC 1404, discovered in archival observations taken with the MUSE integral field spectrograph. The H$α$ line width of 1950 km s$^{-1}$ FWHM, and luminosity of (4.1$\pm$0.1)$\times$10$^{36}$ erg s$^{-1}$, are consistent with a nova outburst, and the source is not visible in MUSE data obtained nine months later. A transient soft X-ray source was detected at the same position (within $<$1 arcsec), 14 years before the H$α$ transient. If the X-ray and H$α$ emission are from the same object, the source may be a short-timescale recurrent nova with a massive white dwarf accretor, and hence a possible Type-Ia supernova progenitor. Selecting broad-H$α$ point sources in MUSE archival observations for a set of nearby early-type galaxies, I discovered twelve more nova candidates with similar properties to the NGC 1404 source, including five in NGC 1380 and four in NGC 4365. Multi-epoch data are available for four of these twelve sources; all four are confirmed to be transient on $\sim$1 year timescales, supporting their identification as novae.
