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COMPARISON OF PHYSICAL PROPERTIES AND EVOLUTION OF AKARI AND SPITZER 24 μm-DETECTED GALAXIES AT z = 0.4 - 2 KCI 등재

  • 언어ENG
  • URLhttps://db.koreascholar.com/Article/Detail/384349
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천문학논총 (Publications of the Korean Astronomical Society)
한국천문학회 (Korean Astronomical Society)
초록

We present physical properties of 24 μm galaxies detected by AKARI and Spitzer and their evolution between redshifts 0:4 < z < 2. Using multi-wavelength data from X-ray to radio observations in NEP Deep Field (for AKARI) and Subaru/XMM-Newton Deep Field (for Spitzer), we derive photometric redshift, stellar mass, star-formation rate (SFR), dust extinction magnitude and rest-frame luminosities/colors of the 24 μm galaxies from photometric SED fitting. We infer the SFRs from rest-frame ultraviolet luminosity and total infrared luminosity calibrated against Herschel photometric data. For both survey elds, we obtain complete samples with stellar mass of > 1010M⊙ and SFR of > 30M⊙=yr up to z = 2. We nd that specific SFRs evolves with redshift at all stellar masses in NON-power-law galaxies (non-PLGs) as star-formation dominant luminous infrared galaxies (LIRGs). The correlations between specific SFR and stellar mass in the Spitzer and AKARI galaxy samples are well consistent with trends of the main sequence galaxies. We also discuss nature of PLGs and their evolution.

목차
ABSTRACT
1. INTRODUCTION
2. SAMPLE SELECTION AND DATA ANAYSIS
3. PHYSICAL PROPERTIES AND EVOLUTION
REFERENCES
저자
  • Naofumi Fujishiro(Koyama Astronomical Observatory, Kyoto Sangyo University)
  • Hitoshi Hanami(Physics Section, Iwate University)
  • Tsuyoshi Ishigaki(Physics Section, Iwate University)