The Milky Way Imaging Scroll Painting Survey: Data Release 1

作者：Ji Yang, QING-ZENG YAN, Yang Su, Shaobo Zhang, Zhou, Xin, Yan Sun, Yiping Ao, Xuepeng Chen, Zhiwei Chen, F.L. Du, Min Fang, Yan Gong, Zhibo Jiang, Jin, Shengyu, Bing-Gang Ju, Chong Li, Yingjie Li, Yi Liu, Dengrong Lu, Luo, Chunsheng, Yuwei Ma, Ruiqing Mao, Jixian Sun, Wang Chen, Hong-Chi Wang, M. Wang, M. Wang, Xindong Wang, Wenting Xu, Yu Xu, Kun Yan, Ping Yan, Yuan, Lixia, Miaomiao Zhang, Yongxing Zhang · 发表于：arXiv (Cornell University) · 年份：2025 · DOI：10.48550/arxiv.2512.08260 · 被引用次数：1 · 研究领域：Astrophysics and Star Formation Studies、Astro and Planetary Science、Astronomy and Astrophysical Research

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 12CO, 13CO, and C18O toward the northern Galactic plane during 2011-2022. The MWISP survey was conducted using the PMO 13.7 m telescope at a spatial resolution of approximately 50" and a velocity resolution of 0.16 km/s at 115 GHz. DR1 fully covered 2310 square degrees within the Galactic longitude (l) and latitude (b) range of 9.75 deg =< l =< 229.75 deg and |b| =< 5.25 deg. The surveyed area was divided into cell units of 30'x30' for practical purposes and On-The-Fly (OTF) mapping was performed toward each target cell unit. The data were regridded into a regular 3D datacube in l-b-V_LSR with a pixel size of 30" in l-b axes and 0.16 km/s in theV_LSR axis. The median rms noise is 0.47 K, 0.25 K, and 0.25 K for 12CO, 13CO, and C18O, respectively. The equivalent 3 sigma sensitivity in 12CO luminosity is approximately 0.23 K km/s, 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 3.33x10^7 spectra (pixels) for each CO isotopologue line. Color composite images, made from the intensities of the isotopologue lines, and some concise descriptions are provided. We constructed a molecular cloud catalog based on the mosaicked 12CO data cube using the clustering a...