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arXiv · 2204.05840

Extragalactic HI survey with FAST : First look of the pilot survey results

Jiangang Kang·Ming Zhu·Mei Ai·Haiyang Yu·Chun Sun
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Abstract

As first data release of a pilot extragalactic HI survey with Five-hundred-meter Aperture Spherical radio Telescope (FAST),we extracted 544 extragalaxies from three-dimensional(3D) spectral data to perform interactive searching and computing, yielding global parameters for these detections, extending redshift ranges of HI 21cm line up to z = 0.04 ,which covers part of the sky region in right ascension(R.A. or $\alpha$) and declination(Dec or $\delta$) range $00^{\rm h} 47^{\rm m}< \rm R.A.(J2000)<23^{\rm h}22^{\rm m}$ and $+24^{\circ}<\rm Dec.(J2000) <+43^{\circ}$ . The S/N of 544 HI detections are greater than 5 flagged with code 1 to 4 based on baseline qualities or RFI contamination. Besides, we find 16 of which without any counterparts in the existing galaxy catalogs. The catalog can give a guidence for the future HI observation with FAST.

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Jiangang Kang, Ming Zhu, Mei Ai, Haiyang Yu, Chun Sun. 2022-04-12. Extragalactic HI survey with FAST : First look of the pilot survey results. https://doi.org/10.1088/1674-4527%2Fac6796

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