Recently, researchers from Xiangtan University and the National Geographical Observatory discovered and confirmed 222 hot subdwarfs, of which 131 were composite spectrum hot subdwarfs, and 1 It is a wide-distance hot subdwarf binary star with the highest eccentricity rate known so far.
Ethiopians Escort The research group of Associate Professor Lei Zhenxin of the School of Physics and Optoelectronic Engineering is in astrophysics The top international academic journal “The Astrophysical Journal” published the latest research results, titled “Hot Subdwarf Stars Identified in LAMOST DR8 with SinET Escortsgle-lined and Composite Spectra). Xiangtan University is the first unit that completed the thesis, and the National Geographical Observatory and the Czech Academy of Sciences are joint partners.
The research team is at the Ethiopia Escort seminar. Pictures are provided by the correspondent
Based on my country’s Guo Shoujing telescope spectral data, combined with ESA Gaia photometry and parallax data, the paper discovered and certified 222 hot subdwarf stars. 131 of them are composite spectrum hot subdwarf stars, and a wide-distance hot subdwarf binary star with the largest eccentricity rate known so far was discovered, which far exceeded the prediction value of the actual model, and proposed a model for the formation of hot subdwarf stars. new challengeprovocation. This research is a phased result of the search for special celestial objects using artificial intelligence methods, and is an important manifestation of the intersection of astrophysics and mathematics. Once the results were announced, they received follow-up attention and reports from CCTV News, Guangming.com, Global Daily and other media Ethiopia Sugar.
Generator dwarfs are a very special type of small object-quality stars. The object’s mass is only about half that of the sun, but its appearanceET Escorts The effective temperature reaches 4 times the surface temperature of the sun. Hot sub-dwarfs are of great significance to understanding the formation and evolution of small objects, the formation and evolution of stars, asteroseismology, and the process of dispersion of elements inside stars. There are currently more than 6,000 known hot subdwarfs, most of which are single-spectrum types. Very few hot subdwarfs have been confirmed through composite spectra.
“Geostatistics and Big Data Application” is an important support goal for Xiangtan University to build a world-class mathematics discipline In recent years, the Hunan Provincial University Key Laboratory of “Stars and Interstellar Materials” has closely carried out research tasks in this direction, including research on the classification and properties of celestial bodies based on geographical observation big data, simulation calculations of the properties of interstellar materials, He has achieved a series of important results in the astrophysical application of magnetodynamics and the study of the time-domain properties of celestial bodies. He has published more than 10 papers in top international journals in the field of astrophysics such as The Astrophysical Journal, Astronomy & Astrophysics, and has responsibilities including National Natural Sciences Fund Outstanding Youth Fund, Space Telescope Joint Fund, Geophysical Joint Fund, General and Youth Fund, and many national-level projects including the sub-project of the China Manned Space Engineering Survey Space Telescope Special Scientific Research Project. (Correspondent Xia Ying, reporter Lu Xiaowei)