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A Clash of Clusters Provides New Clue to Dark Matter
Special ACKS Seminar: Dragan Huterer
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Seminar, Speaker: Ariyeh Maller
| What | seminar |
|---|---|
| When |
26 January 07 from 01:30 pm to 02:30 pm |
| Where | SLAC: FKB 3rd Fl. Conf. Rm. |
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Seminar: The Intrinsic Properties of SDSS Galaxies: Taking off the Rose Colored Glasses
Abstract: It is well known that most galaxies contain dust. Dust reddens
galaxies and the reddening becomes increasingly important as a galaxy is
viewed from a more inclined angle. This implies that many of the
directly observed properties of galaxies such as the luminosity
function, the correlation function or the color magnitude-diagram are
distorted from their intrinsic properties because of this viewing
angle bias. This effect can be corrected for in a large galaxy
sample such as the Sloan Digital Sky Survey. The procedure is to
identify inclination dependence in an observed galaxy property, color
being the most obvious choice, and then to solve for the function of
inclination that will remove this observed dependence. In this way we
can determine the intrinsic properties of galaxies, properties that
are independent of their inclination. The distribution of these
intrinsic properties give us an undistorted view into the nature of
galaxies and are thus more useful for determining evolutionary
effects and comparing to theoretical models.
MASS: Lance Simms