PARALLAXES

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VLBI with SKA:Possible Arrays and Astrometric Science
《Research in Astronomy and Astrophysics》2024年第7期1-33,共33页Yingjie Li Ye Xu Jingjing Li Shuaibo Bian Zehao Lin Chaojie Hao Dejian Liu 
funded by the National Natural Science Foundation of China(NSFC,Grant Nos.12203104 and 11933011);the Natural Science Foundation of Jiangsu Province(grants No.BK20210999);the National SKA Program of China(grant No.2022SKA0120103);the Entrepreneurship and Innovation Program of Jiangsu Province;the Key Laboratory for Radio Astronomy,CAS。
The next generation of very long baseline interferometry(VLBI)is stepping into the era of microarcsecond(μas)astronomy,and pushing astronomy,especially astrometry,to new heights.VLBI with the Square Kilometre Array(S...
关键词：astrometry-parallaxes-stars kinematics and dynamics-ISM kinematics and dynamics-Galaxy kinematics and dynamics-galaxies kinematics and dynamics-gravitation 
Modified Masses and Parallaxes of Close Binary Systems: HD 39438被引量：1
《Research in Astronomy and Astrophysics》2023年第11期31-37,共7页Suhail Masda ZTYousef Mashhoor Al-Wardat Awni Al-Khasawneh 
We present the detailed fundamental stellar parameters of the close visual binary system HD 39438 for the first time. We used Al-Wardat's method for analyzing binary and multiple stellar systems. The method implements...
关键词：methods:analytical techniques:photometric (stars:)binaries:visual techniques:spectroscopic 
A Catalog of Quasar Candidates Identified by Astrometric and Mid-infrared Methods in Gaia EDR3
《Research in Astronomy and Astrophysics》2023年第2期82-98,共17页Qiqi Wu Shilong Liao Zhaoxiang Qi Hao Luo Zhenghong Tang Zihuang Cao 
supported by the Youth Innovation Promotion Association CAS with Certificate Number 2022259;the grants from the Natural Science Foundation of Shanghai through grant 21ZR1474100;the National Natural Science Foundation of China(NSFC)through grants 12173069,and 11703065;the science research grants from the China Manned Space Project with NO.CMS-CSST-2021-A12 and NO.CMS-CSST-2021-B10。
Quasars are very important in materializing the reference frame.The excess emission of active galactic nuclei(AGNs) in the mid-infrared band can be used to identify quasar candidates.As extremely distant and point-lik...
关键词：(galaxies:)quasars general-parallaxes-catalogs-astrometry 
A New Statistical Distance Scale for Planetary Nebulae,Based on Gaia EDR3
《Research in Astronomy and Astrophysics》2022年第8期170-181,共12页A.Ali E.Algarni A.Mindil S.A Alghamdi 
The present work aims to build a new statistical distance scale for planetary nebulae(PNe)based on a rigorous calibration sample.The distances of the calibration sample are derived from the trigonometric parallax meth...
关键词：(ISM:)planetary nebulae:general PARALLAXES stars:variables:general stars:distances 
New open clusters found by manual mining of data based on Gaia DR2
《Research in Astronomy and Astrophysics》2021年第5期147-154,共8页Juan Casado 
Funding for the DPAC has been provided by national institutions,in particular the institutions participating in the Gaia Multilateral Agreement.This research has made use of the VizieR catalogue access tool,CDS,Strasbourg,France(DOI:10.26093/cds/vizier).
The physical nature of a series of 20 new open clusters is confirmed employing existing data on putative star members,mainly from the second Gaia Data Release(DR2).The clusters were discovered as overdensities of star...
关键词：astronomical databases:miscellaneous parallaxes proper motions(stars:)Hertzsprung-Russell CCM diagrams(Galaxy:)open clusters associations:individual 
A compilation of known QSOs for the Gaia mission
《Research in Astronomy and Astrophysics》2019年第2期151-160,共10页Shi-Long Liao Zhao-Xiang Qi Su-Fen Guo Zi-Huang Cao 
makes use of data products from the Wide-field Infrared Survey Explorer, which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory/California Institute of Technology, funded by the National Aeronautics and Space Administration;provided by the National Development and Reform Commission;supported by grants from the National Natural Science Foundation of China (Grant Nos. 11703065 and 11573054)
Quasars are essential for astrometry in the sense that they are spatially stationary because of their large distance from the Sun. The European Space Agency(ESA) astrometric satellite Gaia is scanning the whole sky wi...
关键词：quasars:general ASTROMETRY PARALLAXES proper motions reference systems catalogs 
An application of the KNND method for detecting nearby open clusters based on Gaia-DR1
《Research in Astronomy and Astrophysics》2017年第6期89-94,共6页Xin-Hua Gao 
supported by the National Natural Science Foundation of China(NSFC,Grant No.11403004)
This paper presents a preliminary test of the k-th nearest neighbor distance （KNND） method for detecting nearby open clusters based on Gaia-DR1. We select 38 386 nearby stars （〈 100 pc） from the Gaia-DR1 catalog,...
关键词：open clusters and associations individual （Hyades  Coma Ber） - astrometry- parallaxes- stars distances 
The Cepheid PL zero-point based on the revised Hipparcos trigonometrical parallaxes
《Chinese Science Bulletin》2009年第20期3790-3794,共5页ZHANG Hong ZHU Zi 
Supported by the National Natural Science Foundation of China (Grant No. 10673005);Foundation of the Chinese Academy of Sciences (Grant No. KJCX2-YW-T13)
Revised Hipparcos data were released by van Leeuwen in 2007.In this article revised Hipparcos trigo-nometrical parallaxes are used to derive a period-luminosity zero-point in the optical V band.Adopting a fixed slope ...
关键词：三角视差 修订 零点 
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