Interacting galaxies in the nearby Universe: only moderate increase of star formation

@article{Knapen2015InteractingGI,
  title={Interacting galaxies in the nearby Universe: only moderate increase of star formation},
  author={Johan H. Knapen and Mauricio A. Cisternas and Miguel Querejeta},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2015},
  volume={454},
  pages={1742-1750}
}
We investigate the influence of interactions on the star formation by studying a sample of almost 1500 of the nearest galaxies, all within a distance of ~45 Mpc. We define the massive star formation rate (SFR), as measured from far-IR emission, and the specific star formation rate (SSFR), which is the former quantity normalised by the stellar mass of the galaxy, and explore their distribution with morphological type and with stellar mass. We then calculate the relative enhancement of these… 

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