1159043
doi
10.5281/zenodo.1159043
oai:zenodo.org:1159043
user-atlast2018
Blind spectroscopic galaxy surveys using an ultra-wide-band imaging spectrograph on AtLAST and LST
Kohno, Kotaro
The University of Tokyo, Japan
info:eu-repo/semantics/openAccess
Creative Commons Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/legalcode
A novel approach to elucidation of cosmic star formation history is a blind search for CO and [CII] emissions using a ultra-wide-band imaging spectrograph on the future large submm telescopes like AtLAST and LST. In particular, searching for [CII] emitters in the appropriate frequency range allows us to sample those sources very efficiently for a redshift range of 3.5 to 9 (190 to 420 GHz), reaching the star-formation in the EoR. Further, spectroscopic analysis of CO in the lower frequency bands will constrain the evolution of CO luminosity functions across cosmic time. We conducted a feasibility study of ``CO/[CII] tomography'' based on a mock galaxy catalog containing 1.4 million objects drawn from the S$^3$-SAX (Obreschkow et al.~2009). We find that a blind spectroscopic survey using a 50-m telescope equipped with a 100-pixel imaging spectrograph, which covers 70--370 GHz simultaneously, will be promising indeed. A survey of 2 deg$^2$ in 1,000 hr (on-source) will uncover > 10^5 line-emitting galaxies in total, including ~10^3 [CII] emitters in the EoR (Tamura et al., in prep.). Wider surveys (10 deg^2 or wider) will also be discussed for RSD science cases.
Zenodo
2018-01-25
info:eu-repo/semantics/lecture
1159042
user-atlast2018
1579540121.525666
11505043
md5:83b8d514d0d38952a3fcfa6e5f2e2409
https://zenodo.org/records/1159043/files/AtLAST_Talk_Kohno.pdf
public
10.5281/zenodo.1159042
isVersionOf
doi