Two formation paths for cluster dwarf galaxies?

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dc.creatorPoggianti, Bianca M.
dc.creatorKashikawa, Nobunari
dc.creatorBridges, Terry
dc.creatorMobasher, Bahram
dc.creatorKomiyama, Yutaka
dc.creatorCarter, Dave
dc.creatorOkamura, Sadanori
dc.creatorYagi, Masafumi
dc.date2003-10-15
dc.date.accessioned2026-07-07T02:10:26Z
dc.date.available2026-07-07T02:10:26Z
dc.descriptionA surprising result of our recent spectroscopic survey of galaxies in the Coma cluster has been the discovery of a possible bimodal distribution in the metallicities of faint galaxies at $M_B>-17$. We identified a group of dwarfs with luminosity-weighted metallicities around solar and a group with [M/H] around -1.5. A metallicity bimodality among galaxies of similar luminosities is unexpected and suggests that faint cluster galaxies could be an heterogeneous population that formed through more than one evolutionary path, possibly as a consequence of the cluster environment.
dc.description2 pages, to appear in IAU Symp. Series vol.217, Recycling intergalactic and interstellar matter, eds. P.-A. Duc, J. Braine, E. Brinks
dc.identifierhttps://arxiv.org/abs/astro-ph/0310404
dc.identifierhttp://arxiv.org/abs/astro-ph/0310404
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/6742
dc.subjectAstrophysics
dc.titleTwo formation paths for cluster dwarf galaxies?
dc.typetext

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