The Pico dos Dias Survey Starburst Galaxies

摘要: We discuss the nature of galaxies found in Pico dos Dias Survey (PDS) for young stellar objects. The PDS were selected from IRAS Point Source catalog. They have flux density moderate or high quality at 12, 25, and 60 ?m spectral indices ranges -3.00 ? ?(25, 12) + 0.35 -2.50 ?(60, 25) +0.85. These criteria allowed detection 382 galaxies, which are a mixture starburst Seyfert galaxies. Most included catalog warm sources by de Grijp et al. remaining constitute homogeneous sample luminous [log F (LB/L?) = 9.9 0.4] 67% not recognized as such before. is established comparing their LIR/LB ratios colors with emission-line literature already classified show an excess FIR luminosity, significantly different those galaxies-99% our index -2.5. This color cutoff also marks change dominant morphologies galaxies: normal preferentially late-type spirals (Sb later), while starbursts more numerous among early-type (earlier than Sbc). preference new, but trait massive nucleus (Coziol al.). As other galaxy samples, no barred No difference between detected on basis UV excess. represent branch UV-bright mean luminosity log (LIR/L?) 10.3 0.5 redshifts smaller 0.1. form complete limited 2 10-10 ergs cm-2 s-1.