The Milky Way Imaging Scroll Painting Survey: Data Release 1

作者：Ji Yang, Qing-Zeng Yan, Yang Su, Shaobo Zhang, Xin Zhou, Yan Sun, Yiping Ao, Xuepeng Chen, Zhiwei Chen, Fujun Du, Min Fang, Yan Gong, Zhibo Jiang, S.‐Z. Jin, Binggang Ju, Chong Li, Yingjie Li, Yi Liu, Dengrong Lu, Chunsheng Luo, MA Yue-hui, Ruiqing Mao, Jixian Sun, Chen Wang, Hongchi Wang, Min Wang (Qinghai), Min Wang (Qinghai), Xindong Wang, Wenting Xu, Ye Xu, Kun Yan, Ping Yan, Lixia Yuan, Miaomiao Zhang, Yongxing Zhang · 发表于：The Astrophysical Journal Supplement Series · 年份：2026 · DOI：10.3847/1538-4365/ae29e7 · 被引用次数：16 · 研究领域：Astrophysics and Star Formation Studies、Astro and Planetary Science、Galaxies: Formation, Evolution, Phenomena

Abstract We present the first data release (DR1) of the Milky Way Imaging Scroll Painting (MWISP) survey, a mapping in the J = 1 → 0 transition lines of 12 CO, 13 CO, and C 18 O toward the northern Galactic plane during 2011–2022. The MWISP survey was conducted using the Purple Mountain Observatory 13.7 m telescope at a spatial resolution of approximately 50″ and a velocity resolution of 0.16 km s −1 at 115 GHz. DR1 fully covered 2310 deg 2 within the Galactic longitude ( l ) and latitude ( b ) range of 9 . ° 75 ≤ l ≤ 229 . ° 75 and ∣ b ∣ ≤ 5 . ° 25. The surveyed area was divided into cell units of 30 ′ × 30 ′ for practical purposes and on-the-fly mapping was performed toward each target cell unit. The data were regridded into a regular three-dimensional data cube in l – b – V LSR with a pixel size of 30″ in l – b axes and 0.16 km s −1 in the V LSR axis. The median rms noise is 0.47, 0.25, and 0.25 K for 12 CO, 13 CO, and C 18 O, respectively. The equivalent 3 σ sensitivity in 12 CO luminosity is approximately 0.23 K km s −1 , making MWISP the most sensitive survey of its kind. In this paper, we describe the survey data, including the calibration, data cleaning, data mosaic processes, and the data products. The final mosaicked data cubes contain about 3.33 × 10 7 spectra (pixels) for each CO isotopologue line. Color composite images, made from the intensities of the isotopologue lines, a...