Spitzer Space Telescope - Archive Research Proposal #40070


GALEX-Spitzer study of resolved galaxies

Principal Investigator: Barry Madore
           Institution: Carnegie Institution of Washington

     Technical Contact: Barry Madore, Carnegie Institution of Washington

Co-Investigators: 
Samuel Boissier, Laboratoire d'Astrophysique de Marseille             
Alessandro Boselli, Laboratoire d'Astrophysique de Marseille          
Veronique Buat, Laboratoire d'Astrophysique de Marseille              
Denis Burgarella, Laboratoire d'Astrophysique de Marseille            
Timothy Heckman, Johns Hopkins University                             
Mark Seibert, Carnegie Observatories                                  
Armando Gil de Paz, Universidad Complutense de Madrid                 
Pablo Perez Gonzalez, Universidad Complutense de Madrid               
Daniel Dale, University of Wyoming                                    

Science Category: nearby galaxies (z<0.05, v_sys<15,000 km/s) 
Dollars Approved: 139102 

Abstract:
The aim of this proposal is to extract, cross-compare and study the intersection
of nearby galaxies observed with GALEX with those currently contained in the
Spitzer archive. We have already determined that the sample for which Spitzer
data are available is representative of the entire GALEX Atlas of Nearby
Galaxies, which covers the range of the observed properties of the field galaxy
population as judged by optical and FIR luminosities and colors. The combined
sample is already a factor of 4 larger that the number of objects of SINGS.
This is now enough to allow statistical studies on sub-sets even when
down-selecting to a specific group of galaxies (e.g., chosen according to
sub-type, colors, luminosities, environment, etc.). A wide range of scientific
issues can be addressed with the UV+far-infrared spatially resolved data. Our
prime scientific objective will be the study of the properties of dust
attenuation in all star formation regimes (from normal to starburst galaxies),
on a local basis (in individual regions, and along profiles). The obtained
products will be made available to the community, as is already the GALEX Atlas
of nearby galaxies.