Physics
Scientific paper
Feb 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...268..511s&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 268, no. 2, p. 511-535.
Physics
35
Galactic Bulge, Galactic Structure, Spiral Galaxies, Stellar Physics, Astronomical Models, Astronomical Photometry, Astronomical Spectroscopy, Charge Coupled Devices, Density Distribution, Galactic Rotation, Kinematics
Scientific paper
Photometry and extensive 2D kinematics of the edge-on Sc galaxy NGC 3079 are presented. An attempt is made to describe the derived observational properties of the box/peanut bulge in the system using the self-consistent numerical simulation scheme of Rowley (1988). In common with all other such systems observed to date, the box/peanut bulge displays a velocity field which 'rotates on cylinders' to the limit of the data. The velocity dispersion distribution is strongly peaked to the center, falling from about 150 km/s to the intrinsic resolution of about 60 km/s exterior to the central 10 arcsec. Modeling the observational properties of the bulge with self-consistent numerical simulations shows that the box/peanut morphology can be accounted for solely by a distribution function comprising two integrals of the motion without recourse to a significant contribution from a third integral.
Carter David
Shaw Malcolm
Wilkinson Althea
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