The z-structure of the disc of NGC 3115

Details The z-structure of the disc of NGC 3115 The z-structure of the disc of NGC 3115

Sep 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988mnras.234..335c&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 234, Sept. 15, 1988, p. 335-340.

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Disk Galaxies, Galactic Structure, Spiral Galaxies, Astronomical Photometry, Bessel Functions, Computational Astrophysics, Perturbation Theory

Scientific paper

An analysis of previous photometric observations of the edge-on disk of NGC 3115 shows that, outside the central region where the disk fades, the face-on surface brightness can be modeled by the usual exponential power law. The deprojected scale height in the z-direction is not found to be constant with the galactocentric distance (R). The linear flare-up noted at R of about 75 arcsec indicates that the disk ceases to be self-gravitating at this radius. The results suggest that in the past the disk of NGC 3115 possessed a significant amount of gas.

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