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Probing the Astrometric Properties of Gaia EDR3 Quasars at the Faintest Magnitudes
Liao, Shilong1,2; Wu, Qiqi1,2; Qi, Zhaoxiang1,2; Tang, Zhenghong1,2; Luo, Hao1,2; Cao, Zihuang3
2021-09-01
Source PublicationPUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
ISSN0004-6280
Volume133Issue:1027Pages:13
AbstractGaia early data release 3 (EDR3) provides about 1.6 million QSO-like objects. Measuring the systematic residuals of the quasars convincingly in Gaia EDR3 is paramount for further fundamental astronomy use. We aim to conduct an independent assessment of the astrometric quality of Gaia EDR3 utilizing a sizable and confirmed extragalactic sources catalog. By positional cross-matching the known quasars to EDR3, we obtain a list of 299,004 confirmed QSOs. Together with the quasars identified in EDR3, we calculated the generalized moving mean of proper motions and parallaxes. Using spherical harmonics, the parallaxes and the proper motions are expanded to investigate their astrometric features. The global parallax bias is similar to-21 mu as and similar to-27 mu as for the five-parameter solution and the six-parameter solution samples, respectively. The mean proper motion of the five-parameter solution QSO-like subset is consistent with zero, while the mean proper motion of the six-parameter solution subset is a few mu as yr(-1) biased. The typical rotation and glide vector for the five-parameter solution quasars are (+3, +2, +1) +/- 0.5 mu as yr(-1) and (0, -4, -2) +/- 0.5 mu as yr(-1), respectively. Small systematic dependence of the rotation on the Gaia color and the G magnitude exists. The parallaxes of EDR3 quasars show an rms amplitude of 9.9 mu as spatial correlation with the angular of >= 18 degrees. At the level of Gaia EDR3's uncertainties, the quadrupole components of the vectorial spherical harmonics show that the mass-energy density of the gravitational waves omega(GW) is about 0.0073 h (-2).
Funding OrganizationNatural Science Foundation of Shanghai ; Natural Science Foundation of Shanghai ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; China Manned Space Project ; China Manned Space Project ; Natural Science Foundation of Shanghai ; Natural Science Foundation of Shanghai ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; China Manned Space Project ; China Manned Space Project ; Natural Science Foundation of Shanghai ; Natural Science Foundation of Shanghai ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; China Manned Space Project ; China Manned Space Project ; Natural Science Foundation of Shanghai ; Natural Science Foundation of Shanghai ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; China Manned Space Project ; China Manned Space Project
DOI10.1088/1538-3873/ac1eeb
WOS KeywordDATA RELEASE 3 ; PARALLAX ZERO-POINT ; VALIDATION ; ACCURACY ; SYSTEM
Language英语
Funding ProjectNatural Science Foundation of Shanghai[21ZR1474100] ; National Natural Science Foundation of China (NSFC)[12173069] ; National Natural Science Foundation of China (NSFC)[11703065] ; National Natural Science Foundation of China (NSFC)[12073047] ; National Natural Science Foundation of China (NSFC)[11573054] ; China Manned Space Project[CMS-CSST-2021-A12] ; China Manned Space Project[CMS-CSST-2021-B10]
Funding OrganizationNatural Science Foundation of Shanghai ; Natural Science Foundation of Shanghai ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; China Manned Space Project ; China Manned Space Project ; Natural Science Foundation of Shanghai ; Natural Science Foundation of Shanghai ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; China Manned Space Project ; China Manned Space Project ; Natural Science Foundation of Shanghai ; Natural Science Foundation of Shanghai ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; China Manned Space Project ; China Manned Space Project ; Natural Science Foundation of Shanghai ; Natural Science Foundation of Shanghai ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; China Manned Space Project ; China Manned Space Project
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000693419400001
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/75570
Collection中国科学院国家天文台
Corresponding AuthorLiao, Shilong
Affiliation1.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China
2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Liao, Shilong,Wu, Qiqi,Qi, Zhaoxiang,et al. Probing the Astrometric Properties of Gaia EDR3 Quasars at the Faintest Magnitudes[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,2021,133(1027):13.
APA Liao, Shilong,Wu, Qiqi,Qi, Zhaoxiang,Tang, Zhenghong,Luo, Hao,&Cao, Zihuang.(2021).Probing the Astrometric Properties of Gaia EDR3 Quasars at the Faintest Magnitudes.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,133(1027),13.
MLA Liao, Shilong,et al."Probing the Astrometric Properties of Gaia EDR3 Quasars at the Faintest Magnitudes".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC 133.1027(2021):13.
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