Mathematics – Logic
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.9726d&link_type=abstract
American Astronomical Society, AAS Meeting #211, #97.26; Bulletin of the American Astronomical Society, Vol. 39, p.908
Mathematics
Logic
Scientific paper
Nearby galaxies manifest in a variety of shapes and sizes, forming the basis of a morphological classification scheme whereby galaxies are segregated into ellipticals, lenticulars and spirals. However, recent observations with NASA's Hubble and Spitzer Space Telescopes have shown that distant galaxies at z 2 are completely unrecognizable. Understanding the emergence of the Hubble sequence is central to understanding how galaxies formed, and how they changed over time into the objects recognized in the present universe. Quantifying the space density of galaxies as a function of luminosity is a key diagnostic in understanding the evolution of galaxy morphology. The local galaxy luminosity function, as defined by nearby galaxies, is the benchmark against which luminosity functions for more distant galaxies are compared. The primary objective of this poster is to present the first benchmark near infrared luminosity functions for nearby galaxies, segregated by morphological type. The results set the stage for future observations using NASA's James Webb Space Telescope.
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