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Date and Time of the Query: 2019-05-22 T16:20:04 PDT
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For refcode 2010ApJ...722L.120F:
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Copyright by American Astronomical Society. Reproduced by permission
2010ApJ...722L.120F Revisiting the Scale Length-{mu}_0_ Plane and the Freeman Law in the Local Universe Fathi, Kambiz Abstract. We have used Virtual Observatory technology to analyze the disk scale length r_d_ and central surface brightness {mu}_0_ for a sample of 29,955 bright disk galaxies from the Sloan Digital Sky Survey. We use the results in the r band and revisit the relation between these parameters and the galaxy morphology, and find the average value <{mu}_0_> = 20.2 +/- 0.7 mag arcsec^-2^. We confirm that late-type spirals populate the lower left corner of the r_d_ -{mu}_0_ plane and that the early and intermediate spirals are mixed in this diagram, with disky ellipticals at the top left corner. We further investigate the Freeman Law and confirm that it indeed defines an upper limit for {mu}_0_ in bright disk galaxies with r_mag_ < 17.0, and that disks in late-type spirals (T >= 6) have fainter central surface brightness. Our results are based on a volume-corrected sample of galaxies in the local universe (z < 0.3) that is two orders of magnitudes larger than any sample previously studied and deliver statistically significant implications that provide a comprehensive test bed for future theoretical studies and numerical simulations of galaxy formation and evolution. Key words: galaxies: evolution, galaxies: formation, galaxies: structure
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