The NGC 7742 star cluster luminosity function: a population analysis revisited

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Abstract

We re-examine the properties of the star cluster population in the circumnuclear starburst ring in the face-on spiral galaxy NGC 7742, whose young cluster mass function has been reported to exhibit significant deviations fromthe canonical power law.We base our reassessment on the clusters luminosities (an observational quantity) rather than their masses (a derived quantity), and confirm conclusively that the galaxys starburst-ring clusters-and particularly the youngest subsample, log(t yr-1) ≤7.2-show evidence of a turnover in the cluster luminosity function well above the 90% completeness limit adopted to ensure the reliability of our results. This confirmation emphasizes the unique conundrum posed by this unusual cluster population.

Original languageEnglish
Article number013
Number of pages6
JournalResearch in Astronomy and Astrophysics
Volume18
Issue number2
DOIs
Publication statusPublished - 1 Feb 2018
Externally publishedYes

Keywords

  • galaxies: evolution
  • galaxies: individual (NGC 7742)
  • galaxies: star clusters: general
  • galaxies: star formation
  • globular clusters: general

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