AI 中文总结
本研究基于DESI第一期数据，编制了迄今最大的经光谱确认的白矮星星表，评估了巡天特性、处理了光谱污染并给出分类置信分，为白矮星相关统计研究提供了可靠样本。
AI 中文摘要
暗能量光谱仪（Dark Energy Spectroscopic Instrument）正在开展红移巡天，通过三维绘制宇宙来测量宇宙膨胀的历史。除河外天体外，该仪器还在观测数百万颗银河系恒星，其中包括白矮星。利用第一期数据（Data Release 1），我们编制了迄今为止最大的经光谱确认的白矮星星表，其简洁的选择函数可支持统计上稳健的恒星族群研究。我们对63968个天体的光谱进行了目视检查和模型拟合，发现了44409颗白矮星。我们给出了它们的光谱分类、大气参数和视向速度。我们评估了巡天的完备性和均匀性，识别出因邻近天体的流量进入光纤而导致的潜在光谱污染，并为我们的分类分配了置信分数，以方便统计和观测样本的选择。我们给出了代表大多数白矮星类型（常见及稀有类型）的光谱，最后就该星表的使用给出了建议和警示。
英文摘要
The Dark Energy Spectroscopic Instrument is conducting a redshift survey, mapping the universe in three dimensions to measure the history of cosmic expansion. As well as extragalactic objects, it is targeting millions of Milky Way stars, including white dwarfs. Using Data Release 1 we assemble the largest catalogue of spectroscopically-confirmed white dwarfs to date, whose straightforward selection function enables statistically-robust population studies. We visually inspect and fit models to spectra of 63968 objects, finding 44409 white dwarfs. We present their spectral classifications, atmospheric parameters and radial velocities. We assess survey completeness and uniformity, identify potential spectral contamination caused by flux from nearby sources entering the fibre, and assign confidence scores to our classifications to facilitate selection of statistical and observational samples. We present spectra representing most white dwarf classes, common and exotic. We conclude with recommendations and warnings regarding the use of the catalogue.
CommentsAccepted for publication in MNRAS. Catalogue file available at https://cygnus.astro.warwick.ac.uk/phsdaj/WhiteDwarfs/Tables/DESI_DR1_catalogue_1.0.csv.gz
