LAMOST Astronomical Spectral Data Processing and Release System

Introduction

Spectral surveys are the foundation of large-sample astronomical research. Reliable and uniformly sampled spectra are crucial data sources for astronomical studies and form the theoretical basis for humanity's construction of cosmological models. the LAMOST Astronomical Spectral Data Processing and Release System has published up to 22 million spectra, making it one of the primary intemet-based spectral data sources in the international astronomical community.

The Data and Services Provided by the LAMOST Astronomical Spectral Data Processing and Release System Have Continuously Enhanced its International lmpact

By continuously improving the quality of LAMOST spectral data products and enhancing data traceability, LAMOST spectral data is gradually reaching a world-leading level representing the curent state of astronomical data in China. At the same time, we have been continuously refining the data release system based on user needs, enhancing data retrieval efficiency. The implementation of the LAMOST online asynchronous data table processing system enables users to upload and process large amounts of data.meeting the retrieval and research demands of scientists for datasets of various scales.Due to the reliability and accessibility of the data, the LAMOST Astronomical Spectral Data Release System has been integrated with major international astronomical internet databases, including the CDS Strasbourg database in France, ESA's ESASKY, the Ger.man Virtual Observatory (GvO), and the SDSS database at johns Hopkins University in the United States. To date, LAMOST has served a user base of 1,800 professional astronomers worldwide, leading to the publication of over 200 high-impact journal papers annually, deepening humanity's understanding of the structure, formation, and evolution of the Milky way.

Innovative Design of the LAMOST Astronomical Spectral Data Processing and Release System

A unique identification system has been created to project spectral data onto photometric images, calculating the central coordinates of each celestial object and constructing a unique lD identifier. This significantly simplifies the task of astronomers performing cross-matching across multiple catalogs, enhancing the relevance and consistency of the spectra.By building a data traceability model, the system effectively integrates full process information from data acquisition to processing,ensuring traceability at every stage. New data analysis and trace ability tools are provided in the user interface allowing single-object traceability and batch statistical charts for various types of spectral data. Additionally, we have developed a system to assist users in cross.verifying LAMOST data with the well-known catalogs, such as Gaia and Pan-STARRS, ensuring users can find corresponding targets in other catalogs.The LAMOST internet database has also implemented the interoperability protocols of the international Virtual Observatory Alliance (lvOA), ensuring that widely used international data analysis software can easily access LAMOST data.

The LAMOST Spectral Data Processing and Release System Has Become an Authoritative Stellar Spectral Database System

After more than 10 years of development, the LAMOST Spectral Data Processing and Release System has become a vital tool for Galactic research and is widely recognized by the international astronomical community for the high.quality data it provides. Over 40% of the authors of significant research results using LAMOST data directly download the data from this system. These studies have advanced our understanding of various aspects of the Milky Way, including its size, overall shape, internal structure, chemical composition, and formation history. The system not only supports scientific research but also has a significant impact on higher education and public science outreach. Many universities use the platform in their astronomy practical courses, and some organizations utilize its data for artificial intelligence competitions. High school students have also used the system's data for science and technology innovation projects, with one project winning first prize at the 39th Beijing Youth Science and Technology Innovation Competition. In recognition of its outstanding societal benefits, the LAMOST Spectral Data Processing and Release System was awarded the second prize in the 2020 Beijing Science and Technology Progress Awards.