2026-10-12T20:57:43Z https://www.scidb.cn/oai

10.57760/sciencedb.27351 2026-09-02T15:28:46Z

2026-09-02 MWISP Data Release 1 doi:10.57760/sciencedb.27351 en High-quality molecular data is fundamental to the understanding on the distribution, structure and motion of molecular gas, star formation, Milky Way structure, and circulation & interaction between interstellar medium and other components in our Galaxy. During 2011-2022, we carried out a survey of 12CO, 13CO & C18O J = 1-0 along the northern galactic plane (MWISP)，covering the Galactic longitude of 10~230 degrees and the Galactic latitude of +/5 degrees. This data set is the first data release (DR1), including: (1) Summary tables on the survey; (2) FITS data for individual scan unit for all the three lines; (3) The mosaicked cube FITS cubes for all the three lines； (4) A complete cloud catalog defined by 12CO using DBSCAN algorithm, and the catalogs of 13CO and C18O clumps associated with the clouds; (5) Composite color images of the integrated intensities and p-v diagrams; (6) Statistics tables and distribution map of spectral noise; (7) Summary tables of reference positions for each mapping unit; (8) Mwispy, a dedicated python package for processing the MWISP data.V2 Correction: Due to an issue during data transfer over the internet, the mosaicked C18O cube was corrupted in the velocity range of [274, 300] km/s. Most of the affected data are NaN values, with only a small fraction consisting of noise. Therefore, this issue is unlikely to have a significant impact on most scientific uses of the V1 version. The corrected mosaicked C18O cube has been uploaded as part of the V2 release.Reminder: Similar issues may occur during download. Please verify the MD5 checksum after downloading to ensure data integrity. MWISP; data Release; Molecular clouds; catalogue; CO data 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 Shengyu Jin Chong Li Yingjie Li Yi Liu Dengrong Lu Chunsheng Luo Yuehui Ma Ruiqing Mao Jixian Sun Chen Wang Hongchi Wang Min Wang Min Wang (Qinghai) Xindong Wang Wenting Xu Ye Xu Kun Yan Ping Yan Lixia Yuan Miaomiao Zhang Yongxing Zhang PUBLIC https://creativecommons.org/licenses/by/4.0/ dataset Science Data Bank