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

Anton Mironov; Anton V. Afanasiev; Daniel Fabricant; Igor Chilingarian; Irina Ershova; Ivan Katkov; Kirill Grishin; Nelson Caldwell; Sean Moran

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

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arxiv 2306.08048 v1 pith:PKUZXPT7 submitted 2023-06-13 astro-ph.GA

Igor Chilingarian , Kirill Grishin , Anton V. Afanasiev , Anton Mironov , Daniel Fabricant , Sean Moran , Nelson Caldwell , Ivan Katkov

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Irina Ershova

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keywords galaxiesclusterlow-luminositycomadwarfearly-typeinternalseveral

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

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