LMSA and high-redshift dusty starburst mergers

By using a new numerical code for deriving the spectral energy distribution s of galaxies, we have investigated the time evolution of morphological pro perties, the star formation rate, and the submillimeter flux at 850 mum in high-redshift (z) dusty starburst mergers with mass ratio (m(2)) of two dis ks ranging from 0.1 (minor merger) to 1.0 (major one). We found that the ma ximum star-formation rate, the degree of dust extinction, and the 850 mum f lux are larger for mergers with larger mt(2) The 850 mum flux from mergers at 1.5 less than or equal to z less than or equal to 3.0 in the observer fr ame is found to be a few mJy for major merger cases, and at most similar to 100 mu Jy for minor ones. This result suggests that only high-redshift maj or mergers are now detected by SCUBA with the current 850 mum detection lim it of a few mJy. These results imply that LMSA with the expected detection limit of the order of 10 mu Jy at 850 mum can be used to study high-redshif t mergers with variously different m(2), and thus provide an important clue to the formation of galaxies in the high-redshift universe.