Poster abstract details

Dejene Zewdie and Mirjana Povic


In this work, we went a step further in studying the local galaxies with the highest growth rate, with the main aim to understand better their properties and contribute to better understanding of galaxy growth and morphological transformation. We report an analysis of 179 636 galaxies from the SDSS DR8 survey, using both photometric and spectroscopic data. Taking into account the results of Peréz et al. (2013), obtained using the CALIFA data, we selected those galaxies that have stellar mass in the range 10.73 - 11.03 solar masses being suggested to be good candidates of galaxies with the highest growth rate. We studied the distributions of selected sources in terms of their stellar mass, SFR, specific SFR and luminosity; we classified all galaxies into star-forming, composites, and AGN (Sy2 and LINERs); and studied morphology using two different classification catalogues. We analysed the location of all selected galaxies in relation to the main-sequence of star formation and on the colour-stellar mass diagram. We found that galaxies with the highest growth rate have different spectroscopic properties, most of them being either AGN (LINERs + Sy2) or composite, but not star-forming as have been known for the entire SDSS population at z<0.1.