Clustering properties of low-luminosity star-forming galaxies at z = 0.24 and 0.40 in the Subaru deep field

Aki Nakajima, Yasuhiro Shioya, Tohru Nagao, Tomoki Saito, Takashi Murayama, Shunji S. Sasaki, Asuka Yokouchi, Yoshiaki Taniguchi

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We present our analysis on the clustering properties of star-forming galaxies selected by narrow-band excesses in the Subaru Deep Field. Specifically, we focus on Ha emitting galaxies at z = 0.24 and z = 0.40 in the same field, to investigate possible evolutionary signatures of clustering properties of star-forming galaxies. Based on an analysis on 228 Ha emitting galaxies with 39.8 < logL(Hα) < 40.8 at z = 0.40, we find that their two-point correlation function can be estimated as ξ = (r/1.6 -0.50+0.64Mpc)-1.84±0.08. This is similar to that of Ha emitting galaxies in the same Ha luminosity range at z = 0.24, ξ = (r/1.88-0.49+0.60pc) -1.89±0.07. These correlation lengths are smaller than those for a brighter galaxy sample studied by Meneux et al. (2006) in the same redshift range. The evolution of the correlation length between z = 0.24 and z = 0.40 is interpreted by the gravitational growth of the dark-matter halos.

Original languageEnglish
Pages (from-to)1249-1255
Number of pages7
JournalPublications of the Astronomical Society of Japan
Volume60
Issue number6
DOIs
Publication statusPublished - 2008 Jan 1

Keywords

  • Cosmology: Large-scale structure of universe
  • Galaxies: Distances and redshifts
  • Galaxies: Evolution

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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