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SPECTRA: 作品数：1136被引量：1441H指数：13; 导出分析报告; 相关领域：理学更多>>; 相关作者：杨世学刘宇明何荣幸胡超陈颖更多>>; 相关机构：中国科学院广州海洋地质调查局东南大学上海交通大学更多>>; 相关期刊：更多>>; 相关基金：国家自然科学基金国家重点基础研究发展计划中国博士后科学基金国家高技术研究发展计划更多>>

Modeling the Covariance Matrix for the Power Spectra Before and After the BAO Reconstruction: 《Research in Astronomy and Astrophysics》2024年第12期156-174,共19页Ruiyang Zhao Kazuya Koyama Yuting Wang Gong-Bo Zhao; supported by National Key R&D Program of China No.2023YFA1607803;National Natural Science Foundation of China (NSFC,grant No.11925303);by the CAS Project for Young Scientists in Basic Research (No.YSBR-092);supported by the Chinese Scholarship Council (CSC) and the University of Portsmouth;supported by the STFC grant ST/W001225/1.Y.W.;supported by National Natural Science Foundation of China (NSFC,grant Nos.12273048 and 12422301);by National Key R&D Program of China No.2022YFF0503404;by the Youth Innovation Promotion Association CAS;by the Nebula Talents Program of NAOC.G.B.Z.;supported by science research grants from the China Manned Space Project with No.CMS-CSST-2021-B01;the New Cornerstone Science Foundation through the XPLORER prize;supported by the ICG,SEPNet and the University of Portsmouth。; The baryon acoustic oscillations (BAO) reconstruction plays a crucial role in cosmological analysis for spectroscopic galaxy surveys because it can make the density field effectively more linear and more Gaussian.The ...; 关键词：(cosmology) large-scale structure of universe-cosmology theory-(cosmology) cosmological parameters

Injection Spectra of Different Species of Cosmic Rays from AMS-02, ACE-CRIS and Voyager-1: 《Research in Astronomy and Astrophysics》2023年第11期7-13,共7页Xu Pan Qiang Yuan; supported by the National Key Research and Development Program of China(No. 2021YFA0718404);the National Natural Science Foundation of China (No. 12220101003);the Project for Young Scientists in Basic Research of Chinese Academy of Sciences(No. YSBR-061)。; Precise measurements of energy spectra of different cosmic ray(CR) species have been obtained in recent years, by particularly the AMS-02 experiment on the International Space Station. It has been shown that apparent ...; 关键词：(ISM:)cosmic rays acceleration of particles astroparticle physics

Galaxy Spectra Neural Networks(GaSNets). I. Searching for Strong Lens Candidates in eBOSS Spectra Using Deep Learning: 《Research in Astronomy and Astrophysics》2022年第6期142-169,共28页Fucheng Zhong Rui Li Nicola R.Napolitano; the science research grants from the China Manned Space Project(CMSCSST-2021-A01);the support from K.C.Wong Education Foundation;financial support from the“One hundred top talent program of Sun Yatsen University”grant No.71000-18841229;from the Research Fund for International Scholars of the National Science Foundation of China,grant No.12150710511。; With the advent of new spectroscopic surveys from ground and space,observing up to hundreds of millions of galaxies,spectra classification will become overwhelming for standard analysis techniques.To prepare for this ...; 关键词：gravitational lensing strong-surveys-techniques SPECTROSCOPIC

Estimation of Stellar Atmospheric Parameters from LAMOST DR8 Low-resolution Spectra with 20 ≤ S/N < 30: 《Research in Astronomy and Astrophysics》2022年第6期204-214,共11页Xiangru Li Zhu Wang Si Zeng Caixiu Liao Bing Du Xiao Kong Haining Li; supported by the National Natural Science Foundation of China(grant Nos.11973022,11973049,and U1811464);the Natural Science Foundation of Guangdong Province(No.2020A1515010710);the Youth Innovation Promotion Association of the CAS(id.Y202017)。; The accuracy of the estimated stellar atmospheric parameter evidently decreases with the decreasing of spectral signal-to-noise ratio(S/N)and there are a huge amount of this kind observations,especially in case of S/N...; 关键词：fundamental parameters of stars-astronomy data modeling-algorithms

Chemical abundances of three new Ba stars from the Keck/HIRES spectra: 《Research in Astronomy and Astrophysics》2021年第11期67-78,共12页Shuai Liu Liang Wang Jian-Rong Shi Zhen-Yu Wu Hong-Liang Yan Qi Gao Chun-Qian Li; supported by the National Key R&D Program of China (No. 2019YFA0405502);the National Natural Science Foundation of China (Grant Nos. 12090040, 12090044, 11833006, 12022304, 11973052, 11973042, U2031144 and U1931102);supported by the Astronomical Big Data Joint Research Center, co-founded by the National Astronomical Observatories, Chinese Academy of Sciences (CAS);support from the Youth Innovation Promotion Association of the CAS (id. 2019060); Based on high resolution,high signal-to-noise(S/N)ratio spectra from Keck/HIRES,we have determined abundances of 20 elements for 18 Ba candidates.The parameter space of these stars is in the range of 4880≤Teff≤6050 ...; 关键词：GALAXY Ba stars Chemical abundances Binary

The first data release of LAMOST low-resolution single-epoch spectra被引量：1: 《Research in Astronomy and Astrophysics》2021年第10期73-85,共13页Zhong-Rui Bai Hao-Tong Zhang Hai-Long Yuan Dong-Wei Fan Bo-Liang He Ya-Juan Lei Yi-Qiao Dong Si-Cheng Yu Yong-Heng Zhao Yong Zhang Yong-Hui Hou Yao-Quan Chu; support of the National Key R&D Program of China(2019YFA0405000);the National Natural Science Foundation of China(NSFC)(Grant Nos.12090040 and 12090041);the support of NSFC(Grant No.11973054);the support of the Youth Innovation Promotion Association of Chinese Academy of Sciences(id.2020060);supported by Cultivation Project for LAMOST Scientific Payoff;Research Achievement of CAMS-CAS;Funding for the project has been provided by the National Development and Reform Commission。; LAMOST Data Release 5,covering 17000 deg^(2) from-10°to 80°in declination,contains 9 million co-added low-resolution spectra of celestial objects,each spectrum combined from repeat exposure of two to tens of times d...; 关键词：surveys stars:general methods:data analysis

The Mg_(Ⅱ)absorption line systems in quasar spectra from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope: 《Research in Astronomy and Astrophysics》2021年第4期119-128,共10页Zhi-Fu Chen Huan-Chang Qin Yan-Chun Gao Run-Jin Gui Zhe-Geng Chen Ting-Ting Pang; supported by the Guangxi Natural Science Foundation(2018GXNSFAA050001,2019GXNSFFA245008,GKAD19245136);the Scientific Research Project of Guangxi University for Nationalities(2018KJQD01);the National Natural Science Foundation of China(Grant Nos.11763001,11363001,12073007)。; Making use of quasar spectra from LAMOST,in the spectral data around the Mg_(Ⅱ)emission lines,research described in this paper has detected 217 Mg_(Ⅱ)narrow absorption lines(NALs)with W_(r)^(λ2796)≥3σ_(w)and W_(r...; 关键词：line:identification quasars:absorption lines quasars:general

Possible properties of Te V spectra in PKS 2155–304: 《Research in Astronomy and Astrophysics》2021年第3期227-234,共8页Quan-Gui Gao Fang-Wu Lu Long-Hua Qin Huai-Zhen Li Ju Ma Ji-Yang Ren Hai-Ru Zhao Ting-Feng Yi; partially supported by the National Natural Science Foundation of China(Grant Nos.12063006,11803027and 11863007);Yunnan Local Colleges Applied Basic Research Projects(Grant Nos.202001BA070001-031,2017FH001-102,2018FH001-015,2019FH001-012 and2019FH001-076);Science Research Foundation of Yunnan Education Department of China(Grant Nos.2017ZZX177,2018JS422 and 2019J0733);the financial support from the Hundred Talents Program of Yuxi(Grant Nos.2019)。; We present a one-zone homogeneous lepton-hadronic model and obtain steady-state spectra by solving the time-dependent equations to study a plausible origin of hard TeV spectra in PKS 2155-304.In this model,we assume a...; 关键词：radiation mechanisms:non-thermal BL Lacertae objects:individual(PKS 2155–304) gamma rays:galaxies

Analysis of the X-ray emission from OB stars Ⅲ: low-resolution spectra of OB stars: 《Research in Astronomy and Astrophysics》2020年第7期161-171,共11页Elizaveta Ryspaeva Alexander Kholtygin; support from the Russian Science Foundation grant(No.18–12–00423)。; This paper is the third in our series of papers devoted to the investigation of X-ray emission from OB stars.In our two previous papers,we study the high-resolution X-ray spectra of 32 O stars and 25 B stars to invest...; 关键词：stars:early-type stars:spectra:X-Ray

Stellar population analysis on the stacked spectra of double-peaked emission-line galaxies: 《Research in Astronomy and Astrophysics》2019年第9期37-54,共18页Meng-Xin Wang A-Li Luo; funded by the National Natural Science Foundation of China (NSFC) (Grant No. 11603042);the China Scholarship Council;supported by the Brazilian agencies CNPq, CAPES and FAPESP;by the France-Brazil CAPES/Cofecub program; Double-peaked emission-line galaxies have long been perceived as objects related to merging galaxies or other phenomena with disturbed dynamical activities, such as outflows and disk rotation. In order to find the con...; 关键词：galaxies:evolution galaxies:stellar CONTENT

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