Dwarf early-type galaxies in the Coma cluster: internal dynamics, stellar populations

• DOI: 10.48550/arxiv.2306.08048
• Publication Date: 2023-01-01
• Authors: Igor Chilingarian; Kirill Grishin; Anton V. Afanasiev; Anton Mironov; Daniel G. Fabricant; Seán Moran; Nelson Caldwell; Ivan Katkov; Irina Ershova
• Keywords: Coma Cluster; Dwarf spheroidal galaxy; Stellar population

We present preliminary results from our spectroscopic survey of low-luminosity early-type galaxies in the Coma cluster conducted with Binospec spectrograph at 6.5~m MMT. From spatially-resolved profiles internal kinematics and stellar population properties complemented high-resolution images, we placed several dEs on fundamental plane extension available literature data. also discovered unusual kpc-sized kinematically-decoupled cores dwarf galaxies, which had been probably formed before these entered cluster.