SDSS spectra were used with the Hubble law to create a map - PowerPoint PPT Presentation

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SDSS spectra were used with the Hubble law to create a map

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  1. SDSS spectra were used withthe Hubble law to create a map

  2. This is an AGN Spectral EnergyDistribution (SED)

  3. We are picking quasars since theyoutshine their host galaxy

  4. Color But redshift as well as temperature affects the color of a galaxy? Resdshift : 1+z=lo/le 8

  5. Where shall we get our AGN? • “The UV Properties of SDSS-Selected Quasars” by Trammel et al., 2007 (AJ, 133, 1780) provides the UV data • There are 479 sources between at 0.1 < z < 0.5 • All the sources are in the WISE survey provides the IR data

  6. Redshift distribution ofour sources

  7. Color Magnitude Diagram(except for AGN instead of stars)

  8. End