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2000ApJ...529..832G - Astrophys. J., 529, 832-844 (2000/February-1)

The remarkable central structure of the barred galaxy NGC 1415.

GARCIA-BARRETO J.A. and MORENO E.

Abstract (from CDS):

A remarkable structure is observed in the innermost regions of the barred galaxy NGC 1415: a small stellar bar; bright circumnuclear ionized gas, seen in Hα; two bright ionized gas sources, seen in Hα, just beyond the ends of the small bar; and a boxy distribution of optical continuum. We have developed a mass distribution model consisting of a disk, a bulge, and a bar to approximate the observed central morphology and its surface brightness. In order to reproduce the observed optical brightness distribution, a two-component bar was used, with one component to model the elongated isophotes of the bar and the second component to model the boxy-shaped isophotes. We interpret the circumnuclear ionized gas as forming a circumnuclear ring and the two bright sources as a nuclear and/or circumnuclear outflow slightly out of the plane of the disk.

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Journal keyword(s): Galaxies: Individual: NGC Number: NGC 1415 - Galaxies: ISM - Galaxies: Spiral

Simbad objects: 3

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