论文标题
中微子候选4FGL J0955.1+3551的红移和主机银河系（3HSP J095507.9+355101）
The redshift and the host galaxy of the neutrino candidate 4FGL J0955.1+3551 (3HSP J095507.9+355101)
论文作者
论文摘要
BL LAC对象4FGLJ0955.1+3551被认为是由Icecube天文台检测到的超高能中微子的可能来源。该目标是在2020年1月在大型双眼望远镜上观察到的。我们的光谱法（4100-8500 ANG）产生的红移Z = 0.557，由宿主星系的吸收线推断出来。发射线上最小当量宽度的上限为0.3 ANG。从源图像中，我们能够解析主机星系，我们测量了绝对幅度m（r）= -22.9和re = 8 kpc，即Bl lac的主机星系的典型值。
The BL Lac object 4FGLJ0955.1+3551 has been suggested as a possible source of ultra energetic neutrinos detected by the Icecube observatory. The target was observed in January 2020 at the Large Binocular Telescope. Our spectroscopy (4100-8500 Ang) yields a firm redshift z = 0.557 as deduced by the absorption lines of the host galaxy. The upper limit of the minimum equivalent width on emission lines is 0.3 Ang. From the source image we are able to resolve the host galaxy for which we measure an absolute magnitude M(R) = -22.9 and Re = 8 kpc, that is values which are typical of the host galaxies of BL Lacs.
