Evolution of Gas Flows over the Starburst to Post-Starburst to Quiescent Galaxy Sequence

Yang Sun, Gwang Ho Lee, Ann I. Zabludoff, K. Decker French, Jakob M. Helton, Nicole A. Kerrison, Christy A. Tremonti, Yujin Yang

Research output: Chapter in Book/Report/Conference proceedingChapter


Even though galactic winds are common in galaxies with starbursts or active galactic nuclei (AGN), the role of such gas flows in galaxy evolution remains uncertain. Here we examine how winds vary along a likely evolutionary sequence connecting starburst to post-starburst to quiescent galaxies. To detect the interstellar medium and measure its bulk flows, we examine the residual Na D absorption line doublet after the stellar contribution has been removed from each galaxy’s spectrum. We discover that outflows diminish along this sequence, i.e., as star formation ends. We then focus on the wind behavior within the post-starburst sample, for which we have measured the time elapsed since the starburst ended (post-burst age) via detailed modeling of their star formation histories (French et al. 2018). Even within our post-starburst sample, the fraction of galaxies with significant winds and the average wind velocities decrease with post-burst age after controlling for stellar mass.

Original languageEnglish (US)
Title of host publicationProceedings of the International Astronomical Union
EditorsT. Wong, W.-T. Kim
PublisherCambridge University Press
Number of pages6
StatePublished - Aug 9 2021

Publication series

NameProceedings of the International Astronomical Union
ISSN (Print)1743-9213
ISSN (Electronic)1743-9221


  • ISM: jets and outflows
  • ISM: kinematics and dynamics
  • galaxies: ISM
  • galaxies: evolution

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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