A5016861529- Stellar, planetary, and galactic studies
- Astrophysics and Star Formation Studies
- Astronomy and Astrophysical Research
- Astro and Planetary Science
- Galaxies: Formation, Evolution, Phenomena
- Gamma-ray bursts and supernovae
- Advanced Optical Sensing Technologies
- Planetary Science and Exploration
- Optical Systems and Laser Technology
- Ocular and Laser Science Research
- Astrophysical Phenomena and Observations
- Geophysics and Gravity Measurements
- Force Microscopy Techniques and Applications
- Atmospheric Ozone and Climate
- GNSS positioning and interference
- Astrophysics and Cosmic Phenomena
- Space Satellite Systems and Control
- High-pressure geophysics and materials
- Remote Sensing and LiDAR Applications
- Diamond and Carbon-based Materials Research
- Astronomical Observations and Instrumentation
- Simulation and Modeling Applications
- Advanced Semiconductor Detectors and Materials
- Quantum optics and atomic interactions
- Power System Optimization and Stability
Beijing Normal University
2016-2025
Chinese Academy of Sciences
2003-2025
National Astronomical Observatories
2002-2025
Changchun Observatory
2020-2025
Gainesville Obstetrics & Gynecology
2023
Committee on Publication Ethics
2023
National Center on Birth Defects and Developmental Disabilities
2023
Triangle
2023
Indianapolis Zoo
2023
State Key Laboratory of Enhanced Oil Recovery
2022
The mass-loss rate (MLR) is one of the most important parameters in astrophysics, because it impacts many areas astronomy, such as ionizing radiation, wind feedback, star-formation rates, initial mass functions, stellar remnants, supernovae, and so on. However, modes loss are also uncertain, dominant physical mechanisms that lead to this phenomenon stull largely unknown. Here we assemble complete clean red supergiant (RSG) sample (2121 targets) far Small Magellanic Cloud (SMC) with 53...
ABSTRACT A precise measure of the mid-infrared interstellar extinction law is crucial for investigating properties dust, especially larger-sized grains. Based on stellar parameters derived from SDSS-III/Apache Point Observatory Galaxy Evolution Experiment (APOGEE) spectroscopic survey, we select a large sample G-type and K-type giants as tracers Galactic extinction. We calculate intrinsic color excesses effective temperatures use them to determine given line sight. For entire sky Milky Way...
Sensitivity of magnetometers that use color centers is limited by poor photon-collection and detection efficiency. In this paper, we present the details a newly developed all-optical collection combined frequency-modulated microwave method. The proposed method achieves high sensitivity in static magnetic-field both theoretically experimentally. First, demonstrate technique enables fluorescence as 40% an efficient pump absorption. Subsequently, exploit optically detected magnetic resonance...
We present a clean, magnitude-limited (IRAC1 or WISE1 $\leq$ 15.0 mag) multiwavelength source catalog for the SMC with 45,466 targets in total, purpose of building an anchor future studies, especially massive star populations at low-metallicity. The contains data 50 different bands including 21 optical and 29 infrared bands, ranging from ultraviolet to far-infrared. Additionally, radial velocities spectral classifications were collected literature, as well variability statistics retrieved...
Abstract Mass loss is a crucial process that affects the observational properties, evolution path, and fate of highly evolved stars. However, mechanism mass still unclear, mass-loss rate (MLR) red supergiant stars (RSGs) requires further research precise evaluation. To address this, we utilized an updated complete sample RSGs in Large Magellanic Cloud (LMC) employed 2-DUST radiation transfer model spectral energy distribution fitting approach to determine dust-production rates (DPRs) dust...
Based on the data obtained from Spitzer/GLIPMSE Legacy Program and 2MASS project, we derive extinction in four IRAC bands, [3.6], [4.5], [5.8] [8.0] micron, relative to Ks band (at 2.16 micron) for 131 GLIPMSE fields along Galactic plane within |l|<65 deg, using red giants clump as tracers. As a whole, mean bands (normalized band), A_[3.6]/A_Ks=0.63, A_[4.5]/A_Ks=0.57, A_[5.8]/A_Ks=0.49, A_[8.0]/A_Ks=0.55, exhibits little variation with wavelength (i.e. is somewhat flat or gray). This...
Based on previously selected preliminary samples of Red Supergiants (RSGs) in M33 and M31, the foreground stars luminous Asymptotic Giant Branch (AGBs) are further excluded, which leads to 717 RSGs 420 M31. With time-series data from iPTF survey spanning nearly 2000 days, period amplitude analyzed. According lightcurves characteristics, they classified into four categories 84 56 objects M31 respectively semi-regular variables. For these variables, pulsation mode is identified by comparing...
ABSTRACT We present high-resolution maps of the dust reddening in Magellanic Clouds (MCs). The cover Large and Small Cloud (LMC SMC) area have a spatial angular resolution between ∼26 arcsec 55 arcmin. Based on data from optical near-infrared (IR) photometric surveys, including Gaia Survey, SkyMapper Southern Survey (SMSS), Stellar History (SMASH), Two Micron All Sky (2MASS), near-IR YJKS VISTA survey system (VMC), we obtained multiband stellar samples containing over 6 million stars LMC SMC...
In recent years, the wavelength dependence of interstellar extinction from ultraviolet (UV) to near- and mid-infrared (IR) has been studied extensively. Although it is well established that UV/optical law varies significantly among different lines sight, not clear how IR various environments. this work, using color-excess method taking red giants as tracer, we determine Aλ in four Spitzer/IRAC bands [3.6], [4.5], [5.8], [8.0] μm (relative , Two Micron All Sky Survey (2MASS) Ks band at 2.16...
The characteristics of infrared properties and mid-infrared (MIR) variability red supergiant (RSG) stars in the Large Magellanic Cloud (LMC) are analyzed based on 12 bands near-infrared (NIR) to MIR co-added data from 2MASS, Spitzer WISE, ∼6.6 yr time-series collected by ALLWISE NEOWISE-R projects. 773 RSGs candidates were compiled literature verified using color-magnitude diagram (CMD), spectral energy distribution (SED) variability. About 15% valid targets IRAC1–IRAC2/IRAC2–IRAC3 may show...
Distance measurements of supernova remnants (SNRs) are essential and important. Accurate estimates physical size, dust masses, some other properties SNRs depend critically on accurate distance measurements. However, the determination SNR distances is still a tough task. Red clump stars (RCs) have long history been used as standard candles. In this work, we take RCs tracers to determine large group in inner disk. We first select RC based near-infrared (IR) color-magnitude diagram (CMD). Then,...
Abstract Investigating the extinction law in regions of high dust extinction, such as Pillars Creation within M16 region, is crucial for understanding densest parts interstellar medium (ISM). In this study, we utilize observations from Near-Infrared Camera and Mid-Infrared Instrument onboard James Webb Space Telescope (JWST) to analyze color-excess ratios E (F090W − λ )/ F200W) across a wavelength range 0.9–7.7 μ m. Our method involves performing linear regression on color–color diagrams...
Abstract Red supergiant stars (RSGs) are massive in a late stage of evolution, crucial for understanding stellar life cycles and Galactic structure. However, RSGs on the far side our Galaxy have been underexplored due to observational challenges. In this study, we introduce novel method present new catalogue comprising 474 situated Milky Way, sourced from OGLE-III Variable Stars (OIII-CVS). The identification these was made possible by analyzing granulation parameters extracted OGLE I-band...
Red supergiant stars (RSGs) are massive in a late stage of evolution, crucial for understanding stellar life cycles and Galactic structure. However, RSGs on the far side our Galaxy have been underexplored due to observational challenges. In this study, we introduce novel method present new catalogue comprising 474 situated Milky Way, sourced from OGLE-III Variable Stars (OIII-CVS). The identification these was made possible by analyzing granulation parameters extracted OGLE I-band...
The high-precision motion state analysis of space targets has important scientific value and application potential in the fields geodynamics, geodesy, collision warning avoidance, capture, recovery, removal debris. With increasing repetition rate satellite laser ranging systems, inversion target based on high-repetition-rate data become a hot spot current research. How to filter out noise retain valid information from high-repetition-rate, challenge. traditional polynomial fitting method...
In an effort to accomplish the real-time acquisition of laser ranging results space debris during daylight and enhance observation success rate, this paper establishes a joint distribution model noise echo signals grounded on intensity law background noise. Through in-depth analysis measurement characteristics single-photon detectors, recognition algorithm based disparity in statistical is put forward. This partitions data into intervals equal length. It then employs goodness-of-fit test...
Abstract An extinction distribution of the Andromeda galaxy (M31) is constructed with member stars as tracers by fitting multiband photometric data from UKIRT/WFCAM, Panoramic Survey Telescope and Rapid Response System 1, Gaia DR3. The resulting covers approximately 10 deg 2 M31 a resolution 50″, providing largest coverage to date based on stellar observations. derived average extinction, A V = 1.17 mag, agrees well previous studies. To account for foreground an map Milky Way toward ∼1...
Abstract The Muztagh-Ata site, situated in the eastern Pamir Plateau of southwestern Xinjiang, China, has been identified as a promising high-altitude location for astronomical observations, with systematic monitoring atmospheric and observational parameters conducted since 2017. This study analyzes 6 years (2017-2022) Differential Image Motion Monitor (DIMM) data, revealing exceptional stability site’s seeing conditions, median value 0.89 arcseconds mean 0.96 arcseconds, following...
Slit Streak Tube Imaging Lidar (STIL) is a promising imaging system as its high frame rate and good image quality. As important applications, the depth under water to detect underwater target near coast less than 20m. It can effectively indemnify safety of ships. We use Lidar, including laser whose wavelength 532nm energy one pulse 20mJ. Through outfield experiment on sea, we discussed optical properties surface distinguished two targets with distance more 10cm in image. Also get which 6m...
Based on photometric data from the Spitzer/SAGE survey, using red giants as extinction tracers, mid-infrared (MIR) laws in Large Magellanic Cloud (LMC) are derived for first time form of . This quantity refers to four Infrared Array Camera (IRAC) bands (i.e., [3.6], [4.5], [5.8], and [8.0] μm) relative Two Micron All Sky Survey KS band at 2.16 μm. We obtain near-infrared coefficient be E(J − H)/E(H KS) ≈ 1.29 ± 0.04 KS)/E(H 1.94 0.04. The wavelength dependence MIR LMC varies one sightline...
We present a clean, magnitude-limited (IRAC1 or WISE1$\leq$15.0 mag) multiwavelength source catalog for the LMC. The was built upon crossmatching ($1''$) and deblending ($3''$) between SEIP list Gaia DR2, with strict constraints on astrometric solution to remove foreground contamination. contains 197,004 targets in 52 different bands including 2 ultraviolet, 21 optical, 29 infrared bands. Additional information about radial velocities spectral/photometric classifications were collected from...