Kyutacarは九州工業大学で生産された研究成果を オープンアクセスで提供する機関リポジトリシステムです。 Kyutacar is open-access repository of research by members of the Kyushu Institute of Technology.
California Institute of Technology
Japan Aerospace Exploration Agency
Rochester Institute of Technology
California Institute of Technology, California Institute of Technology
California Institute of Technology, California Institute of Technology
University of California
California Institute of Technology
California Institute of Technology
Korea Astronomy and Space Science Institute (KASI)
California Institute of Technology
Japan Aerospace Exploration Agency
Kwansei Gakuin University
Rochester Institute of Technology
Kyushu Institute of Technology
Tokyo City University
Rochester Institute of Technology, California Institute of Technology
抄録
We study the stellar halos of 0.2 ≲ z ≲ 0.5 galaxies with stellar masses spanning M* ∼ 1010.5 to 1012M⊙ (approximately L* galaxies at this redshift) using imaging data from the Cosmic Infrared Background Experiment (CIBER). A previous CIBER fluctuation analysis suggested that intra-halo light (IHL) contributes a significant portion of the near-infrared extragalactic background light (EBL), the integrated emission from all sources throughout cosmic history. In this work, we carry out a stacking analysis with a sample of ∼30,000 Sloan Digital Sky Survey (SDSS) photometric galaxies from CIBER images in two near-infrared bands (1.1 and 1.8 μm) to directly probe the IHL associated with these galaxies. We stack galaxies in five sub-samples split by brightness and detect an extended galaxy profile beyond the instrument point-spread function (PSF) derived by stacking stars. We jointly fit a model for the inherent galaxy light profile plus large-scale one- and two-halo clustering to measure the extended galaxy IHL. We detect nonlinear one-halo clustering in the 1.8 μm band at a level consistent with numerical simulations. By extrapolating the fraction of extended galaxy light we measure to all galaxy mass scales, we find ∼30%/15% of the total galaxy light budget from galaxies is at radius r > 10/20 kpc, respectively. These results are new at near-infrared wavelengths at the L* mass scale and suggest that the IHL emission and one-halo clustering could have appreciable contributions to the amplitude of large-scale EBL background fluctuations.
雑誌名
Astrophysical Journal
巻
919
号
2
ページ
69-1 - 69-22
発行年
2021-09-28
出版者
IOP Publishing
ISSN
0004-637X
1538-4357
DOI
https://doi.org/10.3847/1538-4357/ac0f5b
権利
Copyright (c) 2021. The American Astronomical Society. All rights reserved. This is the Accepted Manuscript version of an article accepted for publication in Astrophysical Journal. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.3847/1538-4357/ac0f5b.
Probing Intra-Halo Light with Galaxy Stacking in CIBER Images
LaSEINE-2021_025.pdf
(2.4MB)
