Osato, Ken   Nishimichi, Takahiro   Takada, Masahiro   
Monthly Notices of the Royal Astronomical Society 2022年3月
The high-precision measurement of spatial clustering of emission line galaxies (ELGs) is a primary objective for upcoming cosmological spectroscopic surveys. The source of strong emission of ELGs is nebular emission from surrounding ionized gas ir...
Osato, Ken   Nishimichi, Takahiro   Taruya, Atsushi   Bernardeau, Francis   
Physical Review D 104(10) 2021年11月
Perturbation theory of large-scale structures of the Universe at next-to-leading order and next-to-next-to-leading order provides us with predictions of cosmological statistics at subpercent level in the mildly nonlinear regime. Its use to infer c...
Shi, Jingjing   Osato, Ken   Kurita, Toshiki   Takada, Masahiro   
The Astrophysical Journal 2021年8月
Emission line galaxies (ELGs), more generally star-forming galaxies, are valuable tracers of large-scale structure and therefore main targets of upcoming wide-area spectroscopic galaxy surveys. We propose a fixed-aperture shape estimator of each E...
Okumura, Teppei   Hayashi, Masao   Chiu, I. -Non   Lin, Yen-Ting   Osato, Ken   Hsieh, Bau-Ching   Lin, Sheng-Chieh   
Publications of the Astronomical Society of Japan 2021年8月
We study the angular correlation function of star-forming galaxies and properties of their host dark matter halos at z > 1 using the Hyper-Suprime Cam (HSC) Subaru Stragetic Program (SSP) survey. We use [O II] emitters identified using two narr...
Osato, Ken   Nishimichi, Takahiro   Taruya, Atsushi   Bernardeau, Francis   
Physical Review D 104(10) 1-31 2021年7月 [査読有り]
Perturbation theory of large-scale structures of the Universe at next-to-leading order and next-to-next-to-leading order provides us with predictions of cosmological statistics at sub-percent level in the mildly non-linear regime. Its use to infer...