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

D. Friedli; H. Wozniak; M. Rieke; L. Martinet; P. Bratschi

doi:10.1051/aas:1996212

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

D. Friedli, H. Wozniak, M. Rieke, L. Martinet, P. Bratschi

Research output: Contribution to journal › Article › peer-review

104 Scopus citations

Abstract

We 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.

Original language	English (US)
Pages (from-to)	461-479
Number of pages	19
Journal	Astronomy and Astrophysics Supplement Series
Volume	118
Issue number	3
DOIs	https://doi.org/10.1051/aas:1996212
State	Published - 1996
Externally published	Yes

Keywords

Galaxies: fundamental parameters
Galaxies: nuclei galaxies: evolution
Galaxies: photometry
Galaxies: structure

ASJC Scopus subject areas

General Physics and Astronomy

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10.1051/aas:1996212

Cite this

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title = "Disc galaxies with multiple triaxial structures. * II. JHK surface photometry and numerical simulations",

abstract = "We 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.",

keywords = "Galaxies: fundamental parameters, Galaxies: nuclei galaxies: evolution, Galaxies: photometry, Galaxies: structure",

author = "D. Friedli and H. Wozniak and M. Rieke and L. Martinet and P. Bratschi",

year = "1996",

doi = "10.1051/aas:1996212",

language = "English (US)",

volume = "118",

pages = "461--479",

journal = "Astronomy and Astrophysics Supplement Series",

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publisher = "EDP Sciences",

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T1 - Disc galaxies with multiple triaxial structures. * II. JHK surface photometry and numerical simulations

AU - Friedli, D.

AU - Wozniak, H.

AU - Rieke, M.

AU - Martinet, L.

AU - Bratschi, P.

PY - 1996

Y1 - 1996

N2 - We 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.

AB - We 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.

KW - Galaxies: fundamental parameters

KW - Galaxies: nuclei galaxies: evolution

KW - Galaxies: photometry

KW - Galaxies: structure

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DO - 10.1051/aas:1996212

M3 - Article

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JO - Astronomy and Astrophysics Supplement Series

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

Abstract

Keywords

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