A5102885971- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- Astrophysics and Star Formation Studies
- Astronomical Observations and Instrumentation
- Astro and Planetary Science
- Sleep and Wakefulness Research
- Gamma-ray bursts and supernovae
- Adaptive optics and wavefront sensing
- High-pressure geophysics and materials
- Astronomical and nuclear sciences
- Genetics and Plant Breeding
- Circadian rhythm and melatonin
- Black Holes and Theoretical Physics
- Advanced Chemical Physics Studies
- Crop Yield and Soil Fertility
- Calibration and Measurement Techniques
- Sleep and related disorders
- Cosmology and Gravitation Theories
- Optical Systems and Laser Technology
- Climate change impacts on agriculture
- Quantum Electrodynamics and Casimir Effect
China West Normal University
2012-2024
Shandong First Medical University
2024
University of Chinese Academy of Sciences
2015-2018
Institute of Genetics and Developmental Biology
2018
Center for Agricultural Resources Research
2018
National Astronomical Observatories
2014-2016
Chinese Academy of Sciences
2014-2016
Abstract On Earth’s surface, there are only a handful of high-quality astronomical sites that meet the requirements for very large next-generation facilities. In context scientific opportunities in time-domain astronomy, good site on Tibetan Plateau will bridge longitudinal gap between known best 1,2 (all Western Hemisphere). The is highest plateau Earth, with an average elevation over 4,000 metres, and thus potentially provides astronomy particle astrophysics 3–5 . Here we report results...
Abstract M giants, with their distinctive properties such as high luminosity, serve excellent indicators for mapping the structure of Milky Way. The distance to distant giants can be determined by using color–magnitude relation (CMR), which is derived from diagrams specific systems in previous studies. In this work, we aimed achieve more accurate determination focusing on open clusters (OCs) a large number member stars and thus improve CMR. For first time, compiled census OCs harboring Gaia...
Abstract We present a photometric and spectroscopic analysis of the eclipsing binary KIC 10486425. Synthesis light curve radial velocity measurements indicates that this is circular, synchronized, detached system. The masses radii two components are determined as <?CDATA ${M}_{1}=1.54\,{M}_{\odot }$?> , M 2 = 1.11 ⊙ ${R}_{1}=1.47\,{R}_{\odot ${R}_{2}=1.60\,{R}_{\odot respectively. cooler secondary star more evolved, while primary still on zero-age main sequence, suggesting 10486425 could be...
In this paper, by treating the cosmological constant as a thermodynamic pressure, we study thermodynamics and phase transitions of dyonic AdS black holes in Gauss-Bonnet-Scalar gravity, where conformal scalar field is considered. more general extended space, first verified law hole thermodynamics, find that it always true. Meanwhile, corresponding Smarr relation also obtained. Then, found exhibits interesting critical behaviors six dimensions, i.e., two swallowtails can be observed...
Asteroseismic analysis of solar-like stars allows us to determine physical parameters such as stellar mass, with a higher precision compared most other methods. Even in well-studied cluster the Hyades, masses red giant are not well known, and previous mass estimates based on model calculations (isochrones). The four known giants Hyades assumed be clump (core-helium-burning) their positions colour-magnitude diagrams, however asteroseismology offers an opportunity test this assumption. Using...
We used the newly commissioned 50 cm Binocular Network (50BiN) telescope at Qinghai Station of Purple Mountain Observatory (Chinese Academy Sciences) to observe old open cluster NGC 188 in V and R as part a search for variable objects. Our time-series data span total 36 days. Radial velocity proper-motion selection resulted sample 532 genuine members. Isochrone fitting was applied cleaned sequence, yielding distance modulus (m - M)0V = 11.35 \pm 0.10 mag foreground reddening E(V R) 0.062...
Abstract In this work, we update the catalog of M-giant stars from low-resolution spectra Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) Data Release 9. There are 58,076 M giants identified classification pipeline with seven temperature subtypes M0 to M6. The 2471 misclassified non–M-giant white dwarf binaries, early types, and dwarfs. And contamination rate is 4.2% in M-giants sample. A total 372 carbon were by CaH spectral indices, further confirmed LAMOST spectra. We...
The central engine that powers gamma-ray bursts (GRBs), the most powerful explosions in universe, is still not identified. Besides hyper-accreting black holes, rapidly spinning and highly magnetized neutron stars, known as millisecond magnetars, have been suggested to power both long short GRBs. presence of a magnetar following compact star mergers particular interest it would provide essential constraints on poorly understood equation state for stars. Indirect indications these merger...
We present a photometric study of the short-period eclipsing binary NSVS4484038. Time-series CCD photometry star in B and V band was carried out. An orbital period 0.218551 days determined for revised linear ephemeris given. The first solution system detected through light-curve synthesis using Wilson–Devinney method. It reveals an overcontact configuration with filling-out factor about 10%. mass ratio to be 2.74 inclination 721. less massive secondary component is found have higher surface...
The current work is the first contribution from 50 cm Binocular Network, whose primary goal to systematically detect and characterize variable stars in Galactic open clusters. In this paper, we report results of a search for variables cluster NGC 2301. Eighteen including 12 new objects were detected 20' × field around cluster. physical properties, classifications, memberships are discussed using behaviors light curves, positions on color–magnitude diagram, archival proper-motion data. Among...
We present a comprehensive photometric study of the pulsating, eclipsing binary OO Dra. Simultaneous B- and V-band photometry star was carried out on 14 nights. Revised orbital period new ephemeris were derived from data. The first solution system physical parameters component stars are determined. It reveals that Dra could be detached with less-massive secondary nearly filling in its Roche lobe. By subtracting light changes data, we obtained intrinsic pulsating curves hotter massive primary...
Photometric observations of AH Cnc, a W UMa-type system in the open cluster M67, were carried out by using 50BiN telescope. About 100 h time-series B- and V -band data taken, based on which eight new times light minima determined. By applying Wilson-Devinney method, curves modeled revised photometric solution binary was derived. We confirmed that Cnc is deep contact (f = 51%), low mass-ratio (q 0.156) system. Adopting distance modulus derived from study host cluster, we have re-calculated...
SONG is a global ground-based network of 1m telescopes for stellar time-domain science, an international collaboration involving many countries across the world. In order to enable favorable duty cycle, plans create homogeneous distribution four nodes in each northern and southern hemispheres. An expected possibility was building one East Asia, preferably on Qinghai-Tibetan Plateau. During last decade, great deal effort has been invested searching high-quality site astronomy China, since...
Core Ideas Seasonal yield variation was up to 47 and 42% under deficit full irrigation, respectively. Seed weight the main component affecting annual variation. Diurnal temperature range daily reference ET were positively related grain during grain‐fill. Smaller upper‐leaf angle, more aboveground biomass, high harvest index, early tasseling desirable traits. Due short growth duration of summer maize, which is planted after winter wheat form double cropping system in North China Plain (NCP),...
Abstract SONG (Stellar Observations Network Goup) is a low-cost ground based international collaboration aimed at two cutting edge problems in contemporary astrophysics the time-domain: 1) Direct diagnostics of internal structure stars and 2) looking for studying extra solar planets, possibly habitable zone. The general plan to set up network 1m telescopes uniformly distributed geographic latitude (in both hemispheres). China jointed (initiated by Danish astronomers) very beginning. In...
At present, the etiology of narcolepsy is not fully understood, and it generally believed to be an autoimmune reaction caused by interactions between environmental genetic factors. Human leukocyte antigen (HLA) class II genes are strongly associated with this gene, especially HLA-DQB1*0602/DQA1*0102. In study, we mainly analyzed correlation different genotypes HLA-DQB1*0602/DQA1*0102 clinical manifestations in Chinese patients narcolepsy.
We present the first CCD photometric observations of open cluster NGC 744, as part 50BiN Open Cluster Survey. The color-magnitude diagrams this were derived from absolute BV RI photometry on a good night. A brief isochrone fitting gives distance modulus (m − M) V = 11.58 ± 0.2 and reddening E(B V) 0.35 0.05 with an age log t 8.30 0.05. By carefully examining time-series data, we discovered four new variable stars in 20' × field around cluster. classified them three eclipsing binary one δ...
In this work, we update the catalog of M-giant stars from low-resolution spectra Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) Data Release 9. There are 58,076 M giants identified classification pipeline with seven temperature subtypes M0 to M6. The 2471 misclassified non-M-giant white dwarf binaries, early types, and dwarfs. And contamination rate is 4.2$\%$ in M-giants sample. A total 372 carbon were by CaH spectral indices, further confirmed LAMOST spectra. We...