Where have all the bulges gone?

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dc.creatorGutierrez, Leonel
dc.creatorTamm, Antti
dc.creatorBeckman, John
dc.creatorAbramson, Louis
dc.creatorErwin, Peter
dc.creatorGuittet, Melanie
dc.date2008-10-15
dc.date.accessioned2026-07-07T10:10:18Z
dc.date.available2026-07-07T10:10:18Z
dc.descriptionSeveral recent studies indicate that bulges are more complex than merely structureless relaxed stellar systems. We study the HST images of a sample of 130 nearby early type (S0-Sab) disc galaxies and detect pure structureless bulges with the Sersic index n > 2 for only 12% of the galaxies. Other galaxies show varied substructure in their inner regions (inner bars, inner spiral arms, inner rings) and sometimes contain no bulge at all. Inner substructure is more common for these galaxies, which also display structure at larger scales.
dc.descriptionA longer version of the poster contribution for the IAU Symposium 254 "The Galaxy Disk in Cosmological Context", Copenhagen, June 9-13 2008. Contains 2 pages and 2 figures
dc.identifierhttps://arxiv.org/abs/0810.2609
dc.identifierhttp://arxiv.org/abs/0810.2609
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/171568
dc.subjectAstrophysics
dc.titleWhere have all the bulges gone?
dc.typetext

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