arXiv subjects
Publications and source records attributed to Kunth Daniel.
I review the properties of starburst galaxies, compare the properties of the local ones with more distant starburts and examine their role in the metal enrichment of the interstellar medium and the intergalactic-intracluster medium. Metallicity is not an arrow of time and contrary to current belief metal rich galaxies can also be found at high redshift.
It now becomes possible to perform multiphase studies of the ISM from hot to molecular phases. HI and HII in star--forming gas-rich galaxies seem to exhibit differences in their metal composition in the sense that HII is less enriched in nitrogen, argon and possibly oxygen than the HII ionized gas. This observational evidence needs to be confirmed on larger sample and yet remains difficult to intepret. We review some possible interpretations. If, on the other hand, metals remain for a long time in hot gas they might ultimately cool down and mix with the original interstellar medium rather than being expelled into the intergalactic medium.