NEP-AKARI: EVOLUTION WITH REDSHIFT OF DUST ATTENUATION IN 8 μm SELECTED GALAXIES
NEP-AKARI: EVOLUTION WITH REDSHIFT OF DUST ATTENUATION IN 8 μm SELECTED GALAXIES
V. Buat(Aix-Marseille Universite); N. Oi(Japan Aerospace Exploration Agency); D. Burgarella(Aix-Marseille Universite); K. Malek(Nagoya University); H. Matsuhara(Japan Aerospace Exploration Agency); K. Murata(Japan Aerospace Exploration Agency); S. Serjeant(The Open University); T.T. Takeuchi(Nagoya University); M. Malkan(University of California); C. Pearson(Nagoya University); T. Wada(Japan Aerospace Exploration Agency)
32권 1호, 257~261쪽
초록
We built a 8 $\mu$m selected sample of galaxies in the NEP-AKARI field by defining 4redshift bins with the four AKARI bands at 11, 15, 18 and 24 microns (0.15 < z < 0.49,0.75 < z < 1.34, 1.34 < z < 1.7 and 1.7 < z < 2.05) . Our sample contains 4079 sources, 599 are securely detected with$Herschel$/PACS. Also adding ultraviolet (UV) data from $GALEX$, we fit the spectral energy distributions using the physically motivated codeCIGALE to extract the star formation rate, stellar mass, dustattenuation and the AGN contribution to the total infrared luminosity ($L_{\rm IR}$). We discuss the impact of the adoptedattenuation curve and that of the wavelength coverage to estimate these physical parameters. We focus on galaxies with a luminosity close the characteristic $L_{\rm IR}^*$ in the different redshift bins to studythe evolution with redshift of the dust attenuation in these galaxies.
Abstract
We built a 8 $\mu$m selected sample of galaxies in the NEP-AKARI field by defining 4redshift bins with the four AKARI bands at 11, 15, 18 and 24 microns (0.15 < z < 0.49,0.75 < z < 1.34, 1.34 < z < 1.7 and 1.7 < z < 2.05) . Our sample contains 4079 sources, 599 are securely detected with$Herschel$/PACS. Also adding ultraviolet (UV) data from $GALEX$, we fit the spectral energy distributions using the physically motivated codeCIGALE to extract the star formation rate, stellar mass, dustattenuation and the AGN contribution to the total infrared luminosity ($L_{\rm IR}$). We discuss the impact of the adoptedattenuation curve and that of the wavelength coverage to estimate these physical parameters. We focus on galaxies with a luminosity close the characteristic $L_{\rm IR}^*$ in the different redshift bins to studythe evolution with redshift of the dust attenuation in these galaxies.
- 발행기관:
- 한국천문학회
- 분류:
- 천문학