2019/10/01 by Dejene Zewdie, Mirjana Pović, Manuel Aravena +2
Engineering · Physics and Astronomy · #Astronomy and Astrophysical Research #Galaxies: Formation, Evolution, Phenomena #Galaxy #Sample (material) #Sequence (biology) #Sky #Space Technology and Applications #Star (game theory) #Star formation #Stellar mass #astro-ph.GA
paper · pdf · doi:10.1017/s1743921320003348
3 pages, 2 figures, Proceedings paper of the IAU symposium "Nuclear Activity in Galaxies Across Cosmic Time" (Ethiopia) accepted to be published under the Cambridge University Press, eds M. Pović, P. Marziani, J. Masegosa, H. Netzer, S. H. Negu, & S. B. Tessema
openalex publication_date 2019/10/01 · arxiv created 2020/04/01 · openalex created_date 2020/04/10 · arxiv updated 2021/07/14 · openalex updated_date 2026/08/05
Abstract In this work, we study the properties of galaxies that are showing the inside-out assembly (which we call inside-out assembled galaxies; IOAGs), with the main aim to understand better their properties and morphological transformation. We analysed a sample of galaxies from the Sloan Digital Sky Survey (SDSS) Data Release 8 (DR8), with stellar masses in the range log M * = 10.73 – 11.03 M ⊙ at at z < 0.1, and analyze their location in the stellar mass-SFR and the color-stellar mass diagram. We found that IOAGs have different spectroscopic properties, most of them being classified either as AGN or composite. We found that the majority of our sources are located below the main sequence of star formation in the SFR-stellar mass diagram, and in the green valley or red sequence in the color-stellar mass diagram. We argue that IOAGs seem to correspond to the transition area where the galaxies are moving from star-forming to quiescent, and from the blue cloud to the red sequence and/or to recently quenched galaxies.