The luminosity function of morphologically classified galaxies in the Sloan Digital Sky Survey

Osamu Nakamura, Masataka Fukugita, Naoki Yasuda, Jon Loveday, Jon Brinkmann, Donald P. Schneider, Kazuhiro Shimasaku, Mark SubbaRao

Research output: Contribution to journalArticle

184 Citations (Scopus)

Abstract

The morphological dependence of the luminosity function is studied, using a sample containing approximately 1500 bright galaxies classified into Hubble types by visual inspection, for a homogeneous sample obtained from the Sloan Digital Sky Survey northern equatorial stripes. Early-type galaxies are shown to have a characteristic magnitude 0.45 mag brighter than that of spiral galaxies in the r* band, consistent with the "universal characteristic luminosity" in the B band. The shape of the luminosity function differs rather little among different morphological types: we do not see any symptoms of the sharp decline in the faint end of the luminosity function for early-type galaxies at least 2 mag fainter than the characteristic magnitude, although the faint-end behavior shows a slight decline (α ≲, -1) compared with the total sample. We also show that the rather flat faint-end slope for early-type galaxies is not due to an increasing mixture of dwarf galaxies, which have softer cores. This means that there are numerous faint early-type galaxies with highly concentrated cores.

Original languageEnglish
Pages (from-to)1682-1688
Number of pages7
JournalAstronomical Journal
Volume125
Issue number4 1768
DOIs
Publication statusPublished - 2003 Apr
Externally publishedYes

Fingerprint

luminosity
galaxies
dwarf galaxies
spiral galaxies
inspection
slopes

Keywords

  • Cosmology: observations
  • Galaxies: fundamental parameters

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Nakamura, O., Fukugita, M., Yasuda, N., Loveday, J., Brinkmann, J., Schneider, D. P., ... SubbaRao, M. (2003). The luminosity function of morphologically classified galaxies in the Sloan Digital Sky Survey. Astronomical Journal, 125(4 1768), 1682-1688. https://doi.org/10.1086/368135

The luminosity function of morphologically classified galaxies in the Sloan Digital Sky Survey. / Nakamura, Osamu; Fukugita, Masataka; Yasuda, Naoki; Loveday, Jon; Brinkmann, Jon; Schneider, Donald P.; Shimasaku, Kazuhiro; SubbaRao, Mark.

In: Astronomical Journal, Vol. 125, No. 4 1768, 04.2003, p. 1682-1688.

Research output: Contribution to journalArticle

Nakamura, O, Fukugita, M, Yasuda, N, Loveday, J, Brinkmann, J, Schneider, DP, Shimasaku, K & SubbaRao, M 2003, 'The luminosity function of morphologically classified galaxies in the Sloan Digital Sky Survey', Astronomical Journal, vol. 125, no. 4 1768, pp. 1682-1688. https://doi.org/10.1086/368135
Nakamura O, Fukugita M, Yasuda N, Loveday J, Brinkmann J, Schneider DP et al. The luminosity function of morphologically classified galaxies in the Sloan Digital Sky Survey. Astronomical Journal. 2003 Apr;125(4 1768):1682-1688. https://doi.org/10.1086/368135
Nakamura, Osamu ; Fukugita, Masataka ; Yasuda, Naoki ; Loveday, Jon ; Brinkmann, Jon ; Schneider, Donald P. ; Shimasaku, Kazuhiro ; SubbaRao, Mark. / The luminosity function of morphologically classified galaxies in the Sloan Digital Sky Survey. In: Astronomical Journal. 2003 ; Vol. 125, No. 4 1768. pp. 1682-1688.
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