ELFT HÍRADÓ

[ilka AT konkoly.hu (Kalman Belane)]

                            Meghivo
     
      az MTA Konkoly Thege Miklos Csillagaszati Kutatointezete 
                         szeminariumara 

Elõadó: Ulrich Klaas
        ISOPHOT Data Centre 
        Max-Planck-Institut fur Astronomie, Heidelberg, Germany
        

                            The dusty sight of galaxies:  
  FIR ISOPHOT and submm photometry of normal galaxies, ULIRGs and quasars 


Abstract:
The FIR wavelength range is the realm of dust emission. The Infrared Space    
  
Observatory (ISO) offered a wide range of observing capabilities to           
  
characterize the properties of this solid state constituent of the ISM.       
  
In particular the photometer ISOPHOT opened new wavelength windows and        
  
faint flux ranges for extragalactic FIR astronomy.                            
  

With the ISOPHOT 170 micron Serendipity Sky Survey the cold dust component    
  
in a large number of galaxies was quantified allowing the determination of    
  
the gas-to-dust mass ratio.                                                   
  

With ISOPHOT multi-filter photometry and complementary submm observations 
the most detailed 1 to 1000 micron spectral energy distribution templates 
of ultra-luminous infrared galaxies were established. Analysis methods to 
learn more about their deeply embedded energy sources and their evolution 
are presented.     
ISOPHOT multi-filter observations allowed for the first time the 
determination 
of the relative contributions by thermal and non-thermal radiation for 
a statistically significant sample of quasars and provided clues for 
the unified scheme.             
 

Idopont: 2002. oktober 24. csutortok 14 ora

Helyszin: MTA Konkoly Thege Miklos Csillagaszati Kutatointezete eloadoterme
          Budapest, XII. Konkoly Thege u. 13/17.
                             
                                       Patkos Laszlo s.k.