Extragalactic HI survey with FAST : First look of the pilot survey results
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2022
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| _version_ | 1866908302951055360 |
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| author | Kang, Jiangang Zhu, Ming Ai, Mei Yu, Haiyang Sun, Chun |
| author_facet | Kang, Jiangang Zhu, Ming Ai, Mei Yu, Haiyang Sun, Chun |
| contents | 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 $α$) and declination(Dec or $δ$) 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2204_05840 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Extragalactic HI survey with FAST : First look of the pilot survey results Kang, Jiangang Zhu, Ming Ai, Mei Yu, Haiyang Sun, Chun Astrophysics of Galaxies 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 $α$) and declination(Dec or $δ$) 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. |
| title | Extragalactic HI survey with FAST : First look of the pilot survey results |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2204.05840 |