Subo Dong
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View article: KMT-2022-BLG-1818Lb,c: A Cold Super-Jupiter with a Saturn Sibling
KMT-2022-BLG-1818Lb,c: A Cold Super-Jupiter with a Saturn Sibling Open
We present the discovery and analysis of the sixth microlensing two-planet system, KMT-2022-BLG-1818Lb,c, detected by a follow-up program targeting high-magnification events. The second planet was identified from implausible physical param…
View article: Planets Across Space and Time (PAST). VIII. Kinematic Characterization and Identification of Radial Velocity Variables for the LAMOST–Gaia–TESS Stars
Planets Across Space and Time (PAST). VIII. Kinematic Characterization and Identification of Radial Velocity Variables for the LAMOST–Gaia–TESS Stars Open
The Transiting Exoplanet Survey Satellite (TESS) has discovered over 6700 nearby exoplanet candidates using the transit method through its all-sky survey. Characterizing the kinematic properties and identifying variable stars for the TESS …
View article: The Unhurried Universe: A Continued Search for Long Term Variability in ASAS-SN
The Unhurried Universe: A Continued Search for Long Term Variability in ASAS-SN Open
We search a sample of 5,685,060 isolated sources in the All Sky Automated Survey for SuperNovae (ASAS-SN) with 14.5<g<15 mag for slowly varying sources with brightness changes larger than ~0.03 mag/year over 10 years. We find 426 slowly-va…
View article: Supernova rates and luminosity functions from ASAS-SN
Supernova rates and luminosity functions from ASAS-SN Open
Aims. The volumetric rates and luminosity functions (LFs) of core-collapse supernovae (ccSN) and their subtypes are important for understanding the cosmic history of star formation and the buildup of ccSNe products. To estimate these rates…
View article: "Industrial-Scale" Black Hole Selection without a Satellite
"Industrial-Scale" Black Hole Selection without a Satellite Open
The forthcoming GRAVITY+ instrument promises to usher in an era of "industrial-scale" mass measurements of isolated black holes (BHs), with the potential to assemble a sample of many tens of BHs via interferometric microlensing over severa…
View article: DSTANet: A Lightweight and High-Precision Network for Fine-Grained and Early Identification of Maize Leaf Diseases in Field Environments
DSTANet: A Lightweight and High-Precision Network for Fine-Grained and Early Identification of Maize Leaf Diseases in Field Environments Open
Early and accurate identification of maize diseases is crucial for ensuring sustainable agricultural development. However, existing maize disease identification models face challenges including high inter-class similarity, intra-class vari…
View article: Insulator Defect Detection Based on Improved YOLO11n Algorithm Under Complex Environmental Conditions
Insulator Defect Detection Based on Improved YOLO11n Algorithm Under Complex Environmental Conditions Open
Detecting defects in transmission line insulators is crucial to prevent power grid failures as power systems continue to expand. This study introduces YOL011n-SSA, an enhanced insulator defect detection technique method that addresses the …
View article: The ASAS-SN Low Surface Brightness Survey I: Proof-of-Concept and Potential Applications
The ASAS-SN Low Surface Brightness Survey I: Proof-of-Concept and Potential Applications Open
The ASAS-SN Low Surface Brightness Survey utilizes the $\sim7$ years of g-band CCD data from ASAS-SN (The All-Sky Automated Survey for Supernovae) to create stacked images of the entire sky. It is significantly deeper than previous photogr…
View article: Revisiting the Li Abundances of Stars with and without Detected Planets from High-resolution Spectroscopy
Revisiting the Li Abundances of Stars with and without Detected Planets from High-resolution Spectroscopy Open
Whether the presence of planets affects the lithium (Li) abundance of their host stars is still an open question. To investigate the difference in the Li abundance between planet-host stars (HSs) and isolated stars (ISs) with no detected p…
View article: Revisiting the Li abundances of Stars with and without Detected Planets from the High Resolution Spectroscopy
Revisiting the Li abundances of Stars with and without Detected Planets from the High Resolution Spectroscopy Open
Whether the presence of planets affects the lithium (Li) abundance of their host stars is still an open question. To investigate the difference of the Li abundance between planet-host stars (HS) and isolated stars (IS) with no detected pla…
View article: KMT-2022-BLG-1818Lb,c: A Cold Super-Jupiter with a Saturn Sibling
KMT-2022-BLG-1818Lb,c: A Cold Super-Jupiter with a Saturn Sibling Open
We present the discovery and analysis of the sixth microlensing two-planet system, KMT-2022-BLG-1818Lb,c, detected by a follow-up program targeting high-magnification events. Both planets are subject to the well-known ''Close/Wide'' degene…
View article: Observations of Microlensed Images with Dual-field Interferometry: On-sky Demonstration and Prospects
Observations of Microlensed Images with Dual-field Interferometry: On-sky Demonstration and Prospects Open
Interferometric observations of gravitational microlensing events offer an opportunity for precise, efficient, and direct mass and distance measurements of lensing objects, especially those of isolated neutron stars and black holes. Howeve…
View article: Twinkle: A GPU-based Binary-lens Microlensing Code with the Contour Integration Method
Twinkle: A GPU-based Binary-lens Microlensing Code with the Contour Integration Method Open
With the rapidly increasing rate of microlensing planet detections, microlensing modeling software faces significant challenges in computation efficiency. Here, we develop the Twinkle code, an efficient and robust binary-lens modeling soft…
View article: Detecting Exomoons in Free-Floating-Planet Events from Space-based Microlensing Surveys
Detecting Exomoons in Free-Floating-Planet Events from Space-based Microlensing Surveys Open
When a planet is ejected from its star-planet system due to dynamical interactions, its satellite may remain gravitationally bound to the planet. The Chinese Space Station Telescope (CSST) will be capable of detecting a large number of low…
View article: Twinkle: A GPU-based binary-lens microlensing code with contour integration method
Twinkle: A GPU-based binary-lens microlensing code with contour integration method Open
With the rapidly increasing rate of microlensing planet detections, microlensing modeling software faces significant challenges in computation efficiency. Here, we develop the Twinkle code, an efficient and robust binary-lens modeling soft…
View article: SN 2018is: a low-luminosity Type IIP supernova with narrow hydrogen emission lines at early phases
SN 2018is: a low-luminosity Type IIP supernova with narrow hydrogen emission lines at early phases Open
We present a comprehensive photometric and spectroscopic study of the Type IIP SN 2018is. The $V$-band luminosity and the expansion velocity at 50 days post-explosion are $-$15.1$\pm$0.2 mag (corrected for A$_V$=1.34 mag) and 1400 km s$^{-…
View article: Evaluating the potential of CsBiSCl <sub>2</sub> as a solar absorber
Evaluating the potential of CsBiSCl <sub>2</sub> as a solar absorber Open
CsBiSCl 2 was reported to achieve >10% efficiency in solar cells, but the crystal structure is unknown. Here, we find that the previously-proposed perovskite structure is unstable, while the lowest-energy structure for CsBiSCl 2 is still m…
View article: CSS 161010: A Luminous Fast Blue Optical Transient with Broad Blueshifted Hydrogen Lines
CSS 161010: A Luminous Fast Blue Optical Transient with Broad Blueshifted Hydrogen Lines Open
We present ultraviolet, optical, and near-infrared photometric and optical spectroscopic observations of the luminous fast blue optical transient (LFBOT) CSS 161010:045834–081803 (CSS 161010). The transient was found in a low-redshift ( z …
View article: First Resolution of Microlensed Images of a Binary-lens Event
First Resolution of Microlensed Images of a Binary-lens Event Open
We resolve the multiple images of the binary-lens microlensing event ASASSN-22av using the GRAVITY instrument of the Very Large Telescope Interferometer (VLTI). The light curves show weak binary-lens perturbations, complicating the analysi…
View article: U + LSTM-F: A data-driven growth process model of rice seedlings
U + LSTM-F: A data-driven growth process model of rice seedlings Open
Accurately predicting the growth status of rice seedlings and understanding their growth rate and health status in a timely manner helps adjust the growth cycle and management measures. By predicting the growth status of the seedlings, the…
View article: Quantitative Classification and Prediction of Starkrimson Pear Maturity by Near-Infrared Spectroscopy
Quantitative Classification and Prediction of Starkrimson Pear Maturity by Near-Infrared Spectroscopy Open
Scientific evaluation of pear maturity is important for commercial reasons. Near-infrared spectroscopy is a non-destructive method that could be used for rapid assessment of pear maturity. The aim of this study was to develop a reasonable …
View article: Recurring tidal disruption events a decade apart in IRAS F01004-2237
Recurring tidal disruption events a decade apart in IRAS F01004-2237 Open
Context. In theory, recurring tidal disruption events (TDEs) may occur when a close stellar binary encounters a supermassive black hole, if one star is captured and undergoes repeating partial TDEs, or if both stars are tidally disrupted (…
View article: Semantic Navigation for AI-assisted Ideation
Semantic Navigation for AI-assisted Ideation Open
We present a novel AI-based ideation assistant and evaluate it in a user study with a group of innovators. The key contribution of our work is twofold: we propose a method of idea exploration in a constrained domain by means of LLM-support…
View article: Recurring tidal disruption events a decade apart in IRAS F01004-2237
Recurring tidal disruption events a decade apart in IRAS F01004-2237 Open
We report the discovery of a second optical flare that occurred in September 2021 in IRAS F01004-2237, where the first flare occurred in 2010 has been reported, and present a detailed analysis of multi-band data. The position of the flare …
View article: First Resolution of Microlensed Images of a Binary-Lens Event
First Resolution of Microlensed Images of a Binary-Lens Event Open
We resolve the multiple images of the binary-lens microlensing event ASASSN-22av using the GRAVITY instrument of the Very Large Telescope Interferometer (VLTI). The light curves show weak binary-lens perturbations, complicating the analysi…
View article: Observations of Microlensed Images with Dual-field Interferometry: On-sky Demonstration and Prospects
Observations of Microlensed Images with Dual-field Interferometry: On-sky Demonstration and Prospects Open
Interferometric observations of gravitational microlensing events offer an opportunity for precise, efficient, and direct mass and distance measurements of lensing objects, especially those of isolated neutron stars and black holes. Howeve…