Color and morphology of galaxies in the region of the 3C 324 clusters at z ∼ 1.2

Masaru Kajisawa, Toru Yamada

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We investigated the color and morphology of optically selected galaxies in the region of clusters at z ∼ 1.2 near to the radio galaxy 3C 324 using archived data taken with the Hubble Space Telescope. The faint galaxies selected at the HST F702W band that contribute to the surface-density excess of the region have wide ranges of color, size, and morphology, which are not likely to be due to contamination by foreground galaxies. Namely, the rest-frame ultraviolet emission properties of the galaxies in the clusters are not very homogeneous; various amounts of star-formation activity may occur in a significant fraction of them. Although our analysis is purely statistical, we find that typical star-forming galaxies with blue colors have a relatively late-type morphology compared to the red quiescent population in the systems.

Original languageEnglish
Pages (from-to)719-724
Number of pages6
JournalPublications of the Astronomical Society of Japan
Volume51
Issue number5
DOIs
Publication statusPublished - 1999 Jan 1

Keywords

  • Evolution Galaxies: formation
  • Galaxies: clusters of Galaxies

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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