Deprojection of luminosity functions of galaxies in the Coma cluster

M Beijersbergen*, WE Schaap, JM van der Hulst

*Corresponding author for this work

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8 Citations (Scopus)

Abstract

We use a simple analytic model to deproject 2-d luminosity functions (LF) of galaxies in the Coma cluster measured by Beijersbergen et al. 2002. We demonstrate that the shapes of the LFs change after deprojection. It is therefore essential to correct LFs for projection effects. The deprojected LFs of the central area have best-fitting Schechter parameters of M-v* = 18.31(-0.08)(+0.08) and alpha(v) = 1.27(-0.018)(+0.018), M-B* = -19.79(-0.15)(+0.14) and alpha(B) = 1.44(-0.016)(+0.016) and M-r* = 21.77(-0.28)(+0.20) and alpha(r) = 1.27(-0.012)(+0.012). The corrections are not significant enough to change the previously observed trend of increasing faint end slopes with increasing distance to the cluster center. The weighted U, B, and r band slopes of the deprojected LFs show a slightly weaker steepening with increasing projected cluster radius.

Original languageEnglish
Pages (from-to)817-820
Number of pages4
JournalAstronomy & astrophysics
Volume390
Issue number3
DOIs
Publication statusPublished - Aug-2002

Keywords

  • galaxies : clusters : individual : Coma (A1656)
  • galaxies : luminosity function
  • galaxies : evolution
  • galaxies : formation
  • CORE

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