{"DOI":"10.1017/s1743921315009916","abstract":"Abstract\n A simple model for M51a is constructed to explore its evolutionary history by assuming its disk grows from continuous gas infall, which is shaped by a free parameter-the infall-peak time t\n p. By adopting a constant infall-peak time t\n p = 7.0Gyr, our model predictions can reproduce most of the observed constraints and still show that the disk of M51a forms inside-out. Our results also show that the current molecular gas surface density, the star-formation rate and the UV-band surface brightness are important quantities to trace the effect of recent interactions on galactic star-formation process.","author":[{"family":"Kang"},{"family":"Zhang"},{"family":"Chang"}],"id":"unknown","issue":"S319","issued":{"date-parts":[[2015]]},"language":"en","page-first":"129","publisher":"Cambridge University Press (CUP)","title":"The evolution of the spiral galaxy M51a","type":"article-journal","volume":"11"}