Disc galaxies with multiple triaxial structures. II. JHK surface photometry and numerical simulations

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dc.creatorFriedli, D.
dc.creatorWozniak, H.
dc.creatorRieke, M.
dc.creatorMartinet, L.
dc.creatorBratschi, P.
dc.date1996-03-12
dc.date.accessioned2026-07-07T02:21:00Z
dc.date.available2026-07-07T02:21:00Z
dc.descriptionWe present detailed JHK surface photometry with ellipse fits of 13 galaxies selected from previous optical observations as likely candidates for having a secondary bar or a triaxial bulge within the primary bar. We have found 7 double-barred galaxies, 3 double-barred galaxies with an additional intermediate structure with twisted isophotes, and 3 galaxies with a bar and central twisted isophotes. A global analysis of the structural parameter characteristics in the I- and K-bands is presented. Various numerical models of galaxies with bars within bars are also analysed using the ellipse fitting technique and compared to the observations. A thorough review of the possible hypotheses able to explain this phenomenon is given with emphasis on the most likely ones.
dc.description12 pages, AATEX. Accepted for publication in A&A. Large color postscript figures omitted (Figs. 1), figures 2-9 included; gzip'ed postscript files of the paper and Figs. 1 available via anonymous ftp at ftp://obsftp.unige.ch/pub/fri/aasjhk/ , files fri_aasjhk.ps.gz and ngc*.ps.gz
dc.identifierhttps://arxiv.org/abs/astro-ph/9603067
dc.identifierhttp://arxiv.org/abs/astro-ph/9603067
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/10403
dc.subjectAstrophysics
dc.titleDisc galaxies with multiple triaxial structures. II. JHK surface photometry and numerical simulations
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