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1,121 results on '"Li, Yubin"'

1. Calibrating non-parametric morphological indicators from {\it JWST} images for galaxies over $0.5<z<3$

Author

Ren, Jian, Liu, F. S., Li, Nan, Cui, Qifan, Zhao, Pinsong, Li, Yubin, Song, Qi, Yesuf, Hassen M., and Zheng, Xian Zhong

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

The measurements of morphological indicators of galaxies are often influenced by a series of observational effects. In this study, we utilize a sample of over 800 TNG50 simulated galaxies with log($M_*$/M$_\odot$)$>9$ at $0.51$\,$\mu$m. The morphological indicators of star-forming galaxies (SFGs) and quiescent galaxies (QGs) are significantly different. The morphologies of QGs exhibit a higher sensitivity to rest-frame wavelength than SFGs. After analyzing the evolution of morphological indicators in the rest-frame V-band (0.5-0.7\,$\mu$m) and rest-frame J-band (1.1-1.4\,$\mu$m), we find that the morphologies of QGs evolve substantially with both redshift and stellar mass. For SFGs, the $C$, $Gini$ and $M_{\rm 20}$ show a rapid evolution with stellar mass at log($M_*$/M$_\odot$)$\geq10.5$, while the $A_{\rm O}$, $D_{\rm O}$ and $A$ evolve with both redshift and stellar mass. Our comparison shows that TNG50 simulations effectively reproduce the morphological indicators we measured from {\it JWST} observations when the impact of dust attenuation is considered., Comment: 21 pages, 14 figures, 1 table. Accepted for publication in ApJ

Published
2024

5. The Spatially Resolved Properties of the GW170817 Host Galaxy

Author

Li, Yubin, Mao, Jirong, Qin, Jianbo, Zheng, Xianzhong, Liu, Fengshan, Zhao, Yinghe, and Zhao, Xiao-Hong

Subjects
Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Astrophysics of Galaxies
Abstract

GW170817 is the unique gravitational-wave (GW) event that is associated to the electromagnetic (EM) counterpart GRB 170817A. NGC 4993 is identified as the host galaxy of GW170817/GRB 170817A. In this paper, we particularly focus on the spatially resolved properties of NGC 4993. We present the photometric results from the comprehensive data analysis of the high spatial-resolution images in the different optical bands. The morphological analysis reveals that NGC 4993 is a typical early-type galaxy without significant remnants of major galaxy merger. The spatially resolved stellar population properties of NGC 4993 suggest that the galaxy center has passive evolution with the outskirt formed by gas accretion. We derive the merging rate of the compact object per galaxy by a co-evolution scenario of supermassive black hole and its host galaxy. If the galaxy formation is at redshift 1.0, the merging rate per galaxy is $3.2\times 10^{-4}$ to $7.7\times 10^{-5}$ within the merging decay time from 1.0 to 5.0 Gyr. The results provide the vital information for the ongoing GW EM counterpart detections. The HST data analysis presented in this paper can be also applied for the Chinese Space Station Telescope (CSST) research in the future., Comment: RAA accepted

Published
2023
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6. Application of Flexible Control Devices in Typical Scenarios of the Hebei South Network

Author

Yang, Peng, Tian, Jiahui, Li, Xudong, Li, Yubin, Xu, Yanhui, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Tan, Kay Chen, Series Editor, Cai, Chunwei, editor, Qu, Xiaohui, editor, Mai, Ruikun, editor, Zhang, Pengcheng, editor, Chai, Wenping, editor, and Wu, Shuai, editor

Published
2024
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7. Numerical analysis and calculation of urban landscape spatial pattern

Author

Liu, MeiXing, Li, Yubin, Dou, Runliang, Editor-in-Chief, Liu, Jing, Editor-in-Chief, Khasawneh, Mohammad T., Editor-in-Chief, Balas, Valentina Emilia, Series Editor, Bhowmik, Debashish, Series Editor, Khan, Khalil, Series Editor, Masehian, Ellips, Series Editor, Mohammadi-Ivatloo, Behnam, Series Editor, Nayyar, Anand, Series Editor, Pamucar, Dragan, Series Editor, Shu, Dewu, Series Editor, Appleby, Richard, editor, Imparato, Massimo, editor, Feng, Yang, editor, and Wheeb, Ali Hussein, editor

Published
2024
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17. Development of a cobalt (II) and 1,10-phenanthroline carboxaldehyde-based fluorescent probe for the detection of cysteine

Author

Zhang, Haoshun, Lan, Peiyu, Yang, Qinnan, Li, Ciling, Zhao, Liting, Kang, Xinhuang, and Li, Yubin

Subjects
Fluorescence -- Analysis, Aldehydes -- Mechanical properties -- Optical properties, Cobalt -- Mechanical properties -- Optical properties, Phenanthroline -- Mechanical properties -- Optical properties, Chemical synthesis -- Methods -- Analysis, Cysteine -- Analysis, Chemistry
Abstract

Effective cysteine (Cys) detection is extremely important for early disease monitoring and diagnosis. In this study a fluorescent probe (PHO) comprising 1,10-phenanthroline carboxaldehyde as the ligand and cobalt as the central ion was synthesized to detect Cys. The synthesized PHO exhibited enhanced fluorescence at 603 nm in the presence of Cys in HEPES buffer. Furthermore, the probe detected Cys concentrations as low as 0.6[micro]mol/L, demonstrating high sensitivity. Additionally a strong linear relationship was established between the Cys concentration and normalized intensity of fluorescence. Importantly the high selectivity was retained even in the presence of other interfering compounds. Consequently this method can serve as a novel approach for detecting Cys in physiological systems. Key words: cysteine, Co complex, fluorescent probes, sensor, 1. Introduction Cysteine (Cys) plays an important role in eukaryotic cells and contains a thiol group in its side chain. (1) It helps in maintaining redox homeostasis by acting as [...]

Published
2023
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50. Deep Imaging of the HCG 95 Field.I.Ultra-diffuse Galaxies

Author

Shi, Dongdong, Zheng, Xianzhong, Zhao, Haibin, Pan, Zhizheng, Li, Bin, Zou, Hu, Zhou, Xu, Guo, Kexin, An, Fangxia, and Li, Yubin

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

We present a detection of 89 candidates of ultra-diffuse galaxies (UDGs) in a 4.9 degree$^2$ field centered on the Hickson Compact Group 95 (HCG 95) using deep $g$- and $r$-band images taken with the Chinese Near Object Survey Telescope. This field contains one rich galaxy cluster (Abell 2588 at $z$=0.199) and two poor clusters (Pegasus I at $z$=0.013 and Pegasus II at $z$=0.040). The 89 candidates are likely associated with the two poor clusters, giving about 50 $-$ 60 true UDGs with a half-light radius $r_{\rm e} > 1.5$ kpc and a central surface brightness $\mu(g,0) > 24.0$ mag arcsec$^{-2}$. Deep $z$'-band images are available for 84 of the 89 galaxies from the Dark Energy Camera Legacy Survey (DECaLS), confirming that these galaxies have an extremely low central surface brightness. Moreover, our UDG candidates are spread over a wide range in $g-r$ color, and $\sim$26% are as blue as normal star-forming galaxies, which is suggestive of young UDGs that are still in formation. Interestingly, we find that one UDG linked with HCG 95 is a gas-rich galaxy with H I mass $1.1 \times 10^{9} M_{\odot}$ detected by the Very Large Array, and has a stellar mass of $M_\star \sim 1.8 \times 10^{8}$ $M_{\odot}$. This indicates that UDGs at least partially overlap with the population of nearly dark galaxies found in deep H I surveys. Our results show that the high abundance of blue UDGs in the HCG 95 field is favored by the environment of poor galaxy clusters residing in H I-rich large-scale structures., Comment: Published in ApJ

Published
2017
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