The shape of bars in early-type barred galaxies

Details The shape of bars in early-type barred galaxies The shape of bars in early-type barred galaxies

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.245..130a&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 245, July 1, 1990, p. 130-139.

Statistics

Computation

86

Astronomical Models, Barred Galaxies, Galactic Structure, Computational Astrophysics, Isophotes, Least Squares Method, Many Body Problem

Scientific paper

The shapes of bars in a small sample of SB0 galaxies with strong bars are examined by fitting generalized ellipses to the isophotes. It is shown that the bar and lens components in SB0 can be well-fitted by generalized ellipses of a form which is more rectangular than a standard ellipse. The shape parameter c has a maximum near the end of the bar, and the values of the maximum range between 2.5 and 5.5. The ellipticity decreases with radius, starting from a maximum value between 0.7 and 0.9. The method is applied to a bar resulting from an N-body simulation, leading to similar conclusions.

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