Bibcode
Méndez-Abreu, J.; Aguerri, J. A. L.; Corsini, E. M.; Simonneau, E.
Bibliographical reference
Formation and Evolution of Galaxy Disks ASP Conference Series, Vol. 396, Proceedings of the conference held 1-5 October, 2007 at the Centro Convegni Matteo Ricci, Rome, Italy. Edited by José G. Funes, S.J., and Enrico Maria Corsini. San Francisco: Astronomical Society of the Pacific, 2008., p.79
Advertised on:
10
2008
Citations
1
Refereed citations
0
Description
The structural parameters of a magnitude-limited sample of 148 unbarred
S0-Sb galaxies were derived to study the correlations between bulge and
disk parameters as well as the probability distribution function (PDF)
of the intrinsic equatorial ellipticity of bulges. A new algorithm
(GASP2D) was used to perform the bidimensional bulge-disk decomposition
of the J-band galaxy images extracted from the archive of the 2MASS
survey. The PDF of intrinsic ellipticities was derived from the
distribution of the observed ellipticities of the bulges and
misalignments between the the bulges and disks. About 80% of the
observed bulges are not oblate but triaxial ellipsoids. Their mean axial
ratio in the equatorial plane is < B/A >=0.85. There is
not significant dependence of their PDF on morphology, light
concentration or luminosity. This has to be explained by the different
scenarios of bulge formation.
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Casiana
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