supported by the E. and J. Bishop Research Fund at the Technion;by a grant from the Israel Science Foundation
I construct the class of supernovae and supernova progenitors that result from fatal common envelope evolution(CEE). The fatal CEE progenitors are stellar binary systems where a companion spirals-in inside the envelop...
funded by the National Basic Research Program of China (973 program, 2014CB845700);the National Natural Science Foundation of China (Grant No. 11390371/4);The Guo Shou Jing Telescope (the Large Sky Area Multiobject Fiber Spectroscopic Telescope, LAMOST) is a National Major Scientific Project built by the Chinese Academy of Sciences;provided by the National Development and Reform Commission
In this study, we employ machine learning to build a catalog of DB white dwarfs(DBWDs) from the LAMOST Data Release(DR) 5. Using known DBs from SDSS DR14, we selected samples of highquality DB spectra from the LAMOST ...
Recent observations of young volcanism on the near-Earth terrestrial planets require a new understanding. Magmatic/volcanic episodes on Venus, Mars and Mercury, as well as on Earth’s Moon, are apparently contemporane...
supported by the National Natural Science Foundation of China (Nos. 11873085, 11673059 and 11521303);Chinese Academy of Sciences (Nos. QYZDB-SSW-SYS001 and KJZD-EW-M06-01);Yunnan Province (Nos. 2017HC018 and 2018FB005)
It has been suggested that Type Ia supernovae(SNe Ia) could be produced in the conditions of the violent merger scenario of the double-degenerate model, in which a thermonuclear explosion could be produced when a doub...
Supported by the National Natural Science Foundation of China
We report on the first investigation into kinematics and chromospheric activity of M dwarfs from the Guo Shou Jing Telescope (also called the Large Sky Area Multi-Object Fiber Spectroscopic Telescope - LAMOST) data ...
In this work we apply the differential transformation method (Zhou’s method) or DTM for solving white-dwarfs equation which Chandrasekhar [1] introduced in his study of the gravitational potential of these degenerate...
We present a spectroscopic study of two polar systems, V834 Cen and MR Ser observed with IUE (International Ultraviolet Explorer) obtained during the period 1982-1991 and 1982-1987 for both systems respectively, to di...
We have found that fractional principal quantum numbers are permitted in hydrogen atom which yield the conditions for neutron and white dwarf stars evolution. The number densities of neutron and white dwarf stars reve...
supported by the Scientific Research Foundation of Beijing Normal University;the National Natural Science Foundation of China (Grant No.10778717);supported by the Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences
X-ray loud M dwarfs are a major source of by-products (contamination) in the X-ray band of the multiwavelength quasar survey. As a by-product, the low dispersion spectra of 22 M dwarfs are obtained in which the spec...