Young, metal-enriched cores in early-type dwarf galaxies in the Virgo cluster based on colour gradients
- Urich, Linda
- Lisker, Thorsten
- Janz, Joachim
- van de Ven, Glenn
- Leaman, Ryan
- Boselli, Alessandro
- Paudel, Sanjaya
- Sybilska, Agnieszka
- Peletier, Reynier F.
- den Brok, Mark
- Hensler, Gerhard
- Toloba, Elisa
- Falcón-Barroso, Jesús
- Niemi, Sami-Matias
DOIAbstract
Early-type dwarf galaxies are not simply featureless, old objects, but were found to be much more diverse, hosting substructures and a variety of stellar population properties. To explore the stellar content of faint early-type galaxies, and to investigate in particular those with recent central star formation, we study colours and colour gradients within one effective radius in optical (g - r) and near-infrared (I - H) bands for 120 Virgo cluster early-type galaxies with - 19 ma
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