Mathematics – Logic
Scientific paper
Jan 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998baas...30..767b&link_type=abstract
American Astronomical Society Meeting, 191, #129.10
Mathematics
Logic
Scientific paper
Early in extragalactic astronomy it was noticed that spiral galaxies have the same central optical surface brightness. Freeman (1970) quantified this property of spirals, finding the average B-band surface brighness value to be 21.65 mag/arcsec(2) with a remarkably small scatter of 0.3 mag/arcsec(2) . The reason for this "universal" surface brightness value is difficult to explain physically, given that Hubble morphological sequence represents galaxies with different kinematic, structural and starforming properties. Our study determines whether or not the constant surface brightness trend holds for normal, high surface brightness galaxies at infrared wavelengths, where a different (older) component of the stellar population is being traced, and also the effects of internal dust within the galaxies are much less pronounced. In order to show the validity of our results, our primary database of aperture photometry from de Vaucouleurs & Longo (1988) and Longo et al (1983) will be compared to CCD BVI band and near-infrared imaging.
Marcum Pamela Marie
Storchi Bergmann Thaisa
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