文章基本信息

标题：Young, metal-enriched cores in early-type dwarf galaxies in the Virgo cluster based on colour gradients
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作者：Linda Urich ; Thorsten Lisker ; Joachim Janz 等
期刊名称：Astronomy & Astrophysics
印刷版ISSN：0004-6361
电子版ISSN：1432-0746
出版年度：2017
卷号：606
页码：1-12
DOI：10.1051/0004-6361/201730897
语种：English
出版社：EDP Sciences
摘要：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 mag
关键词：engalaxies: clusters: individual: Virgogalaxies: dwarfgalaxies: evolutiongalaxies: structuregalaxies: stellar contentgalaxies: photometry