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Spatially resolved stellar mass buildup and quenching in massive disk galaxies over the last 10 Gyr revealed with spatially resolved SED fitting

Published online by Cambridge University Press:  10 June 2020

Abdurro’uf Open the ORCID record for Abdurro’uf [Opens in a new window]  and
Masayuki Akiyama
Abdurro’uf
Affiliation:
Astronomical Institute, Tohoku University, Aramaki, Aoba, Sendai 980-8578, Japan email: [email protected] Institute of Astronomy and Astrophysics, Academia Sinica, Taipei 10617, Taiwan
Masayuki Akiyama
Affiliation:
Astronomical Institute, Tohoku University, Aramaki, Aoba, Sendai 980-8578, Japan email: [email protected]
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Abstract

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Despite decreasing cosmic star formation rate density over the last 10 Gyr, the stellar mass (M*) buildups in galaxies were still progressing during this epoch. About 50% of the current M* density in the universe was built over the last ∼8.7 Gyr. In this research, we investigated the stellar mass buildup and quenching of spatially resolved regions within massive disk galaxies over the last 10 Gyr. We apply the spectral energy distribution (SED) fitting method to SEDs of sub-galactic regions in galaxies to derive the spatially resolved distributions of SFR and M* in the galaxies. This namely pixel-to-pixel SED fitting method is applied to massive disk galaxies at 0.01 < z < 0.02 and 0.8 < z < 1.8. We found that massive disk galaxies tend to build their M* and quench their star formation progressively from the central region to the outskirts, i.e. inside-out stellar mass buildup and quenching.

Keywords

galaxies: evolutiongalaxies: formationgalaxies: fundamental parametersgalaxies: spiralgalaxies: structure
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 15 , Symposium S341: Challenges in Panchromatic Modelling with Next Generation Facilities , November 2019 , pp. 55 - 59
Copyright
© International Astronomical Union 2020

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