Van den Bergh 24 is a variable reflection nebula around XY Per
arXiv:2508.03884
Abstract
We report the discovery of optical variability in vdB 24 on timescales of a few days. This reflection nebula surrounds the Herbig Ae/Be star XY Per, whose changing brightness appears to influence the nebular illumination.
9 pages, 7 figures, 1 table