Bingqiu Chen
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View article: A large, long-lived, slowly-expanding superbubble across the Perseus arm
A large, long-lived, slowly-expanding superbubble across the Perseus arm Open
Stellar feedback is a crucial mechanism in galactic evolution, as demonstrated by the widespread bubbles observed with JWST. In this study, we combine data from Gaia and LAMOST to obtain a sample of young O-B2 stars with full three-dimensi…
View article: SafeMT: Multi-turn Safety for Multimodal Language Models
SafeMT: Multi-turn Safety for Multimodal Language Models Open
With the widespread use of multi-modal Large Language models (MLLMs), safety issues have become a growing concern. Multi-turn dialogues, which are more common in everyday interactions, pose a greater risk than single prompts; however, exis…
View article: Observational Evidence of Dust Evolution in Supernova Remnants: Size Redistribution toward Larger Grains in the Early Sedov Phase
Observational Evidence of Dust Evolution in Supernova Remnants: Size Redistribution toward Larger Grains in the Early Sedov Phase Open
Recent observations have revealed that dust is widespread and abundant in galaxies up to z ≃ 8, significantly influencing their appearance and spectral properties. In the early Universe, dust is thought to form primarily in supernova (SN) …
View article: A recent re-acceleration of the Local Bubble revealed by kinematics of young star associations
A recent re-acceleration of the Local Bubble revealed by kinematics of young star associations Open
The low-density region of the interstellar medium (ISM) where the Sun is located is known as the Local Bubble, a cavity filled with high-temperature and low-density plasma that may be created by a series of supernova (SN) explosions over t…
View article: Kinematics of the interstellar medium using Gaia: A catalogue of 102 YSO-MC associations within 3.5 kpc from the Sun with 3D velocities
Kinematics of the interstellar medium using Gaia: A catalogue of 102 YSO-MC associations within 3.5 kpc from the Sun with 3D velocities Open
Kinematic information is crucial for understanding the evolution of complex systems, such as interstellar gas. Obtaining full 3D kinematic information is a crucial final step for modeling and interpretation. Molecular clouds are nurseries …
View article: Vertical structure of interstellar dust in the Milky Way
Vertical structure of interstellar dust in the Milky Way Open
Interstellar dust plays a central role in the evolution of galaxies by shaping star formation, altering observed stellar properties, and redistributing radiation across the electromagnetic spectrum. In the Milky Way, dust is concentrated i…
View article: Vertical Structure of Interstellar Dust in the Milky Way
Vertical Structure of Interstellar Dust in the Milky Way Open
Interstellar dust plays a central role in the evolution of galaxies by shaping star formation, altering observed stellar properties, and redistributing radiation across the electromagnetic spectrum. In the Milky Way, dust is concentrated i…
View article: Observational Evidence of Dust Evolution in Supernova Remnants: Size Redistribution Toward Larger Grains in Early Sedov Phase
Observational Evidence of Dust Evolution in Supernova Remnants: Size Redistribution Toward Larger Grains in Early Sedov Phase Open
Recent observations have revealed that dust is widespread and abundant in galaxies up to $z\,{\backsimeq}\,8$, significantly influencing their appearance and spectral properties. In the early Universe, dust is thought to form primarily in …
View article: Clinical characteristics and prognosis of pulmonary lymphoepithelioma-like carcinoma: a multicenter cohort study of 1106 cases
Clinical characteristics and prognosis of pulmonary lymphoepithelioma-like carcinoma: a multicenter cohort study of 1106 cases Open
PLELC patients, with rare brain metastasis and high PD-L1 positivity, show favorable prognosis, but further research is needed to refine optimal treatment strategies for PLELC.
View article: A Comprehensive All-sky Catalog of 3345 Molecular Clouds from Three-dimensional Dust Extinction
A Comprehensive All-sky Catalog of 3345 Molecular Clouds from Three-dimensional Dust Extinction Open
Understanding the distribution and properties of molecular clouds is crucial for tracing the structure and evolution of the interstellar medium (ISM) and the large-scale morphology of the Milky Way. Here we present an all-sky catalog of 33…
View article: An All-sky 3D Dust Map Based on Gaia and LAMOST
An All-sky 3D Dust Map Based on Gaia and LAMOST Open
We present a comprehensive 3D dust-reddening map covering the entire Milky Way, constructed by combining reddening estimates based on Large Sky Area Multi-Object Fiber Spectroscopy Telescope (LAMOST) low-resolution spectra ( E ( B − V ) LA…
View article: A Recent Reacceleration of the Local Bubble Revealed by Kinematics of Young Star Associations
A Recent Reacceleration of the Local Bubble Revealed by Kinematics of Young Star Associations Open
The low-density region of the interstellar medium where the Sun is located is known as the Local Bubble, a cavity filled with high-temperature and low-density plasma that may be created by a series of supernova (SN) explosions over the pas…
View article: Kinematics of the interstellar medium using <i>Gaia</i>: A catalogue of 102 young stellar object–molecular cloud associations within 3.5 kpc of the Sun with 3D velocities
Kinematics of the interstellar medium using <i>Gaia</i>: A catalogue of 102 young stellar object–molecular cloud associations within 3.5 kpc of the Sun with 3D velocities Open
Kinematic information is crucial for understanding the evolution of complex systems, such as interstellar gas. Obtaining full 3D kinematic information is a vital final step for modelling and interpretation. Molecular clouds (MCs) are nurse…
View article: A Massive Yellow Supergiant in the Far Outer Disk of M31: Evidence for in Situ Massive Star Formation beyond the Optical Radius
A Massive Yellow Supergiant in the Far Outer Disk of M31: Evidence for in Situ Massive Star Formation beyond the Optical Radius Open
While massive stars are known to shape galactic ecosystems, their formation has long been assumed to require the high-density environments of inner galactic disks. This paradigm is challenged by mounting evidence of young massive stars in …
View article: Empirically Predicted Absolute Magnitudes for Red Clump Stars in Mephisto and CSST Filters
Empirically Predicted Absolute Magnitudes for Red Clump Stars in Mephisto and CSST Filters Open
Red clump (RC) stars are reliable standard candles for studying the structure and evolution of the Milky Way. In this study, we present empirical calibrations of RC absolute magnitudes in the Mephisto (v, g, r, i) and CSST (g, r, i) photom…
View article: Unveiling a Young Thick Disk in the Milky Way
Unveiling a Young Thick Disk in the Milky Way Open
The thickness of a galaxy’s disk provides a valuable probe of its formation and evolution history. Observations of the Milky Way and local galaxies have revealed an ubiquitous disk structure with two distinctive components: an old thick di…
View article: Identification of Star Clusters in M31 from PAndAS Images Based on Deep Learning
Identification of Star Clusters in M31 from PAndAS Images Based on Deep Learning Open
The identification of star clusters holds significant importance in studying galaxy formation and evolution history. However, the task of swiftly and accurately identifying star clusters from vast amounts of photometric images presents an …
View article: Unveiling a young thick disk in the Milky Way
Unveiling a young thick disk in the Milky Way Open
The thickness of a galaxy's disk provides a valuable probe of its formation and evolution history. Observations of the Milky Way and local galaxies have revealed an ubiquitous disk structure with two distinctive components: an old thick di…
View article: Extinction Distributions in Nearby Star-resolved Galaxies. I. M31
Extinction Distributions in Nearby Star-resolved Galaxies. I. M31 Open
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, and Gaia DR3. The resultin…
View article: The Red Supergiant Progenitor of the Type II Supernova 2024abfl
The Red Supergiant Progenitor of the Type II Supernova 2024abfl Open
Linkage between core-collapse supernovae and their progenitors is not fully understood and ongoing effort of searching and identifying the progenitors is needed. SN 2024abfl is a recent Type II supernova that exploded in the nearby star-bu…
View article: Stellar parameters, extinction, and distances for stars in SMSS DR2 by SPar method
Stellar parameters, extinction, and distances for stars in SMSS DR2 by SPar method Open
The availability of large datasets containing stellar parameters, distances, and extinctions for stars in the Milky Way, particularly within the Galactic disk, is essential for advancing our understanding of the Galaxy's stellar population…
View article: Identification of Star Clusters in M31 from PAndAS Images Based on Deep Learning
Identification of Star Clusters in M31 from PAndAS Images Based on Deep Learning Open
The identification of star clusters holds significant importance in studying galaxy formation and evolution history. However, the task of swiftly and accurately identifying star clusters from vast amounts of photometric images presents an …
View article: A Comprehensive Catalog of Emission-line Nebulae, Star Clusters, and Supergiants in M31 from the LAMOST Spectroscopic Survey
A Comprehensive Catalog of Emission-line Nebulae, Star Clusters, and Supergiants in M31 from the LAMOST Spectroscopic Survey Open
Spectroscopic observations of various tracers in nearby galaxies, such as Andromeda (M31), play a crucial role in identifying and classifying individual stellar populations and nebular objects, thereby enhancing our understanding of galact…
View article: New Red Supergiant Stars in the other side of our Galaxy
New Red Supergiant Stars in the other side of our Galaxy Open
Red supergiant stars (RSGs) are massive stars in a late stage of evolution, crucial for understanding stellar life cycles and Galactic structure. However, RSGs on the far side of our Galaxy have been underexplored due to observational chal…
View article: New red supergiant stars in the other side of our Galaxy
New red supergiant stars in the other side of our Galaxy Open
Red supergiant stars (RSGs) are massive stars in a late stage of evolution, crucial for understanding stellar life cycles and Galactic structure. However, RSGs on the far side of our Galaxy have been underexplored due to observational chal…
View article: Photometric metallicities of 0.8 million KiDS stars
Photometric metallicities of 0.8 million KiDS stars Open
Accurate determinations of metallicity for large, complete stellar samples are essential for advancing various studies of the Milky Way. In this paper, we present a data-driven algorithm that leverages photometric data from the KiDS and th…
View article: Detection of ubiquitous circumbinary matter in hot subdwarfs formed from common-envelope ejections
Detection of ubiquitous circumbinary matter in hot subdwarfs formed from common-envelope ejections Open
The formation of compact binary systems is largely driven by their evolution through a common envelope (CE) phase, crucial for understanding phenomena such as type Ia supernovae and black hole mergers. Despite their importance, direct obse…
View article: Comparing three emerging industrial cell factories: Pseudomonas putida KT2440, Halomonas bluephagenesis TD01, and Zymomonas mobilis ZM4
Comparing three emerging industrial cell factories: Pseudomonas putida KT2440, Halomonas bluephagenesis TD01, and Zymomonas mobilis ZM4 Open
Nonmodel microbes with unique advantages are emerging as industrial platforms, driven by advances in genetic engineering and omics technologies. Notable examples include the versatile soil bacterium Pseudomonas putida KT2440, the halophili…
View article: An Enigmatic PeVatron in an Area around H <scp>ii</scp> Region G35.6−0.5
An Enigmatic PeVatron in an Area around H <span>ii</span> Region G35.6−0.5 Open
Identifying Galactic PeVatrons (PeV particle accelerators) from ultrahigh-energy (UHE, >100 TeV) γ -ray sources plays a crucial role in revealing the origin of Galactic cosmic rays. The UHE source 1LHAASO J1857+0203u is suggested to be ass…