Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26as..103..475b&link_type=abstract
Astronomy and Astrophysics Suppl. 103, 475-502 (1994)
Astronomy and Astrophysics
Astrophysics
66
Galaxies: Fundamental Parameters, Galaxies: Photometry, Galaxies: Spiral, Galaxies: Structure Of
Scientific paper
CCD surface photometry in Thuan and Gunn g and r filters is used to study the structure of stellar disks in 27 edge-on galaxies. Parameters for models of the light distribution such as the scale height z_0_, the radial scale length h, the cut-off radius R_max_, and the central surface brightness μ_0_ are determined. The observed disks generally show a radial cut-off at a surface brightness level of ~23 mag/arcsec^2^, well above the signal-to-noise limit. Several galaxies in our sample have a ratio R_max_/h<3.0, smaller than typical values found in previous studies. The light distribution perpendicular to the plane is, even at visual wavelength, better described by an exponential or a sech function in z than by the sech^2^ function of an isothermal disk model. The central face-on corrected surface brightness μ_0_ of the disks presented here are lower than values of comparable face-on samples.
Barteldrees Andreas
Dettmar Ralf-Juergen
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