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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
physics and astronomy
Status and perspectives of the CRAFTS extra-galactic HI survey
Science China: Physics, Mechanics and Astronomy, Volume 62, No. 5, Article 959506, Year 2019
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Description
The Five-hundred-meter Aperture Spherical radio Telescope (FAST) is expected to complete its commissioning in 2019. FAST will soon begin the Commensal Radio Astronomy FasT Survey (CRAFTS), a novel and unprecedented commensal drift scan survey of the entire sky visible from FAST. The goal of CRAFTS is to cover more than 20000 deg2 and reach redshift up to about 0.35. We provide empirical measurements of the beam size and sensitivity of FAST across the 1.05 to 1.45 GHz frequency range of the FAST L-band array of 19-beams (FLAN). Using a simulated HI-galaxy catalogue based on the HI Mass Function (HIMF), we estimate the number of galaxies that CRAFTS may detect. At redshifts below 0.35, over 6 × 105 HI galaxies may be detected. Below the redshift of 0.07, the CRAFTS HIMF will be complete above a mass threshold of 109.5M⊙. FAST will be able to investigate the environmental and redshift dependence of the HIMF to an unprecedented depth, shedding light onto the missing baryon and missing satellite problems. © 2019, Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature.
Authors & Co-Authors
Zhang, Kai
China, Beijing
National Astronomical Observatories Chinese Academy of Sciences
China, Beijing
University of Chinese Academy of Sciences
China, Beijing
Chinese Academy of Sciences
Wu, Jingwen
China, Beijing
National Astronomical Observatories Chinese Academy of Sciences
China, Beijing
University of Chinese Academy of Sciences
China, Beijing
Chinese Academy of Sciences
Li, D. H.
China, Beijing
National Astronomical Observatories Chinese Academy of Sciences
China, Beijing
University of Chinese Academy of Sciences
China, Beijing
Chinese Academy of Sciences
Krčo, Marko
China, Beijing
National Astronomical Observatories Chinese Academy of Sciences
China, Beijing
Chinese Academy of Sciences
Staveley-Smith, L.
Australia, Perth
International Centre for Radio Astronomy Research
Australia, Sydney
Arc Centre of Excellence for All-sky Astrophysics
Tang, Ningyu
China, Beijing
National Astronomical Observatories Chinese Academy of Sciences
China, Beijing
Chinese Academy of Sciences
Qian, Lei
China, Beijing
National Astronomical Observatories Chinese Academy of Sciences
China, Beijing
Chinese Academy of Sciences
Liu, Mengting
China, Beijing
National Astronomical Observatories Chinese Academy of Sciences
China, Beijing
University of Chinese Academy of Sciences
China, Beijing
Chinese Academy of Sciences
Jin, Chengjin
China, Beijing
National Astronomical Observatories Chinese Academy of Sciences
China, Beijing
Chinese Academy of Sciences
Yue, Youling
China, Beijing
National Astronomical Observatories Chinese Academy of Sciences
China, Beijing
Chinese Academy of Sciences
Zhu, Yan
China, Beijing
National Astronomical Observatories Chinese Academy of Sciences
China, Beijing
Chinese Academy of Sciences
Yao, Rui
China, Beijing
National Astronomical Observatories Chinese Academy of Sciences
China, Beijing
Chinese Academy of Sciences
Statistics
Citations: 29
Authors: 12
Affiliations: 5
Identifiers
Doi:
10.1007/s11433-019-9383-y
ISSN:
16747348
Study Design
Cross Sectional Study
Study Approach
Quantitative