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EZ and GOSSIP Two new VO compliant tools for spectral analysis

Learn about EZ and GOSSIP, two new VO-compliant tools developed by Paolo Franzetti and the PANDORA group for measuring redshifts and performing spectro-photometric analysis of galaxies. EZ offers an automatic and reliable way to measure redshifts from large sets of spectra, while GOSSIP allows for SED fitting and analysis. Both tools have flexible and modular architectures and can be used in interactive or batch mode. Explore the integration of these tools with the Virtual Observatory and their potential for astronomical data analysis.

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EZ and GOSSIP Two new VO compliant tools for spectral analysis

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  1. EZ and GOSSIP Two new VO compliant tools for spectral analysis Paolo Franzetti & the PANDORA Group - IASF Milano 22/3/2007

  2. PANDORA Group http://cosmos.iasf-milano.inaf.it/pandora

  3. PANDORA Group

  4. EZ EZ: Easy-Z (in collaboration with Roberto Scaramella and Stephane Paltani) EZ satisfies the demand of a tool to measure redshifts in an automatic and reliable way from the huge amount of spectra provided by modern spectroscopic surveys • Written in python/C • Interactive/Batch mode • Uses a set of user defined templates and a combination of correlation and fitting algorithms • Flexible and modular architecture

  5. EZ Performance Decisional Tree

  6. EZ Features

  7. EZ and the VO The “standard” VO interface

  8. EZ and the VO The “standard” VO interface

  9. → Data EZ and the VO “Astronomical” VO usage Catalog

  10. EZ and the VO “Astronomical” VO usage Catalog → Data → Analysis

  11. EZ and the VO “Astronomical” VO usage → Spectra Catalog → Data → Analysis

  12. GOSSIP Features GOSSIP: Galaxy Observed Simulated SED Interactive Program • GOSSIP is a tool created to perform spectro-photometric • analysis of galaxy through the SED fitting • Build-up the observed SED • Loading of synthetic models • Fitting procedure (single CPU, cluster, GRID) • Results post-processing and analysis

  13. GOSSIP Features

  14. GOSSIP and the VO GOSSIP could exploit the VO very well, gathering all the available spectro-photometric informations for an object Single spectrum download and fitting But … • Need for more information about magnitudes (filter response curves) • SED data model still under definition

  15. THE END THANK YOU!

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