FAST Ultra-Deep Survey: Data Release for FUDS0

Hongwei Xi, Bo Peng, Lister Staveley-Smith, Bi-Qing For, Bin Liu and Dejian Ding
{"title":"FAST Ultra-Deep Survey: Data Release for FUDS0","authors":"Hongwei Xi, Bo Peng, Lister Staveley-Smith, Bi-Qing For, Bin Liu and Dejian Ding","doi":"10.3847/1538-4365/ad67d5","DOIUrl":null,"url":null,"abstract":"We have used the Five-hundred-meter Aperture Spherical radio Telescope (FAST) to conduct a blind ultradeep survey for neutral hydrogen (H i). We present the complete results from the first of six fields (FUDS0). These observations of 95 hr allowed us to achieve a high-sensitivity (∼50 μJy beam−1) and a high-frequency resolution (22.9 kHz) over an area of 0.72 deg2. We detected 128 galaxies in H i distributed over the redshift range of 0 < z < 0.4, with H i masses in the range of , and three faint high-velocity clouds, with a peak column density of NH i ≤ 3.1 × 1017 cm−2. Of the galaxies, 95 are new detections and six have z > 0.38, where no unlensed H i emission has previously been directly detected. Estimates of completeness and reliability are presented for the catalog. The consistency of continuum and H i flux estimates with the NRAO VLA Sky Survey and the Arecibo Ultra-Deep Survey, respectively, confirms the accuracy of the calibration method and data reduction pipeline developed for the full FAST Ultra-Deep Survey.","PeriodicalId":22368,"journal":{"name":"The Astrophysical Journal Supplement Series","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"The Astrophysical Journal Supplement Series","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3847/1538-4365/ad67d5","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

We have used the Five-hundred-meter Aperture Spherical radio Telescope (FAST) to conduct a blind ultradeep survey for neutral hydrogen (H i). We present the complete results from the first of six fields (FUDS0). These observations of 95 hr allowed us to achieve a high-sensitivity (∼50 μJy beam−1) and a high-frequency resolution (22.9 kHz) over an area of 0.72 deg2. We detected 128 galaxies in H i distributed over the redshift range of 0 < z < 0.4, with H i masses in the range of , and three faint high-velocity clouds, with a peak column density of NH i ≤ 3.1 × 1017 cm−2. Of the galaxies, 95 are new detections and six have z > 0.38, where no unlensed H i emission has previously been directly detected. Estimates of completeness and reliability are presented for the catalog. The consistency of continuum and H i flux estimates with the NRAO VLA Sky Survey and the Arecibo Ultra-Deep Survey, respectively, confirms the accuracy of the calibration method and data reduction pipeline developed for the full FAST Ultra-Deep Survey.
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
FAST 超深空探测:FUDS0 数据发布
我们利用五百米孔径球面射电望远镜(FAST)对中性氢(H i)进行了一次超深度盲观测。我们展示了六个观测场(FUDS0)中第一个观测场的完整结果。这些长达 95 小时的观测使我们在 0.72 平方英寸的区域内达到了高灵敏度(∼50 μJy beam-1)和高频分辨率(22.9 kHz)。我们探测到了128个H i星系,它们分布在0 < z < 0.4的红移范围内,H i质量在 ,以及三个微弱的高速云,峰值柱密度为NH i ≤ 3.1 × 1017 cm-2。在这些星系中,有 95 个是新探测到的,6 个星系的 z 值大于 0.38,在这些星系中,以前没有直接探测到过非凝聚 H i 辐射。对星表的完整性和可靠性进行了估计。连续波和 H i 通量的估计值分别与 NRAO VLA 巡天和阿雷西博超深巡天保持一致,这证实了为整个 FAST 超深巡天开发的校准方法和数据缩减管道的准确性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
自引率
0.00%
发文量
0
期刊最新文献
Identifying Light-curve Signals with a Deep-learning-based Object Detection Algorithm. II. A General Light-curve Classification Framework Optical Variability of Gaia CRF3 Sources with Robust Statistics and the 5000 Most Variable Quasars Metrics of Astrometric Variability in the International Celestial Reference Frame. I. Statistical Analysis and Selection of the Most Variable Sources Forecast of Foreground Cleaning Strategies for AliCPT-1 Catalog of Proper Orbits for 1.25 Million Main-belt Asteroids and Discovery of 136 New Collisional Families
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1