论文标题
本地卷中有十几个新的矮人星系候选人
A dozen new dwarf galaxy candidates in the Local Volume
论文作者
论文摘要
我们使用小型业余望远镜的长曝光，对九个发光的局部体积星系周围的低表面亮度伴侣进行了调查。我们发现了星系周围的12个低且非常低的亮度物体：NGC 628，NGC 2337，NGC 3368，NGC 3521，NGC 4236，NGC 4258，NGC 4258，NGC 4594，NGC 5055，NGC 5055，以及NGC 6744在12 MPC中。假设矮人候选者是相邻大型星系的卫星，则其绝对B幅度在[-8.9，-13.0]的范围内，线性直径为[0.6-2.7] KPC，平均表面亮度为[25.1-27.5] Mag/sq.arecsec。卫星候选物与宿主星系的平均线性预测分离为83 kpc。
We carried out a survey of low-surface-brightness companions around nine luminous Local Volume galaxies using long exposures with small amateur telescopes. We found 12 low- and very low-surface-brightness objects around the galaxies: NGC 628, NGC 2337, NGC 3368, NGC 3521, NGC 4236, NGC 4258, NGC 4594, NGC 5055, and NGC 6744 situated within 12 Mpc from us. Assuming the dwarf candidates are satellites of the neighbouring massive galaxies, their absolute B magnitudes are in the range of [-8.9, -13.0], linear diameters are [0.6 - 2.7] kpc, and the mean surface brightnesses are [25.1 - 27.5] mag/sq.arecsec. The mean linear projected separation of satellite candidates from the host galaxies is 83 kpc.
