The bulge-disk orthogonal decoupling in galaxies: NGC 4698 and NGC 4672

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dc.creatorBertola, F.
dc.creatorCorsini, E. M.
dc.creatorCappellari, M.
dc.creatorBeltran, J. C. Vega
dc.creatorPizzella, A.
dc.creatorSarzi, M.
dc.creatorFunes, J. G.
dc.date1999-02-18
dc.date.accessioned2026-07-07T02:30:31Z
dc.date.available2026-07-07T02:30:31Z
dc.descriptionWe report the case of the geometrical and kinematical decoupling between the bulge and the disk of the Sa galaxy NGC 4698. The R-band isophotal map of this spiral shows that the bulge structure is elongated perpendicularly to the major axis of the disk. At the same time a central stellar velocity gradient is found along the major axis of the bulge. We also present the Sa NGC 4672 as good candidate of a spiral hosting a bulge and a disk orthogonally decoupled with respect to one other. This decoupling of the two fundamental components of a visible galaxy suggests that the disk could represent a second event in the history of early-type spirals.
dc.description4 pages, 3 figures (LaTeX, cupconf.sty). To appear in "The Formation of Bulges" C. M. Carollo, H. C. Ferguson, R. F. G. Wyse (eds.), Cambridge University Press
dc.identifierhttps://arxiv.org/abs/astro-ph/9902271
dc.identifierhttp://arxiv.org/abs/astro-ph/9902271
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/13841
dc.subjectAstrophysics
dc.titleThe bulge-disk orthogonal decoupling in galaxies: NGC 4698 and NGC 4672
dc.typetext

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