2026-09-18 02:57:59
Rubin LSST DP2 unveils almost-dark galaxies in the Virgo Cluster: #galaxies identified in Data Preview 2 of the #Rubin Legacy Survey of Space and Time. We present a population of seven almost-dark galaxies identified in Data Preview 2 of the Rubin Legacy Survey of Space and Time. They surround M49 in the vicinity of the #VirgoCluster [...]. Their characteristics are analogous to those of the faintest and low-mass galaxies identified among satellite galaxies And XXI, And XXIII, and And XXV in the Local Group. This discovery demonstrates the power of the forthcoming Rubin LSST 10-year survey to uncover extremely faint galaxies at scale, promising the large statistical samples needed to constrain the faint-end luminosity function and the nature of dark matter."
