NAOC Open IR
Joint fit of Warm Absorbers in COS and HETG spectra of NGC 3783
Fu XiaoDan1; Zhang ShuiNai1; Sun Wei1; Niu Shu2; Ji Li1
2017
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN1674-4527
Volume17Issue:9
AbstractWarm Absorbers (WAs), as an important form of AGN outflows, show absorption in both the UV and X-ray bands. Using XSTAR generated photoionization models, for the first time we present a joint fit to the simultaneous observations of HST/COS and Chandra/HETG on NGC 3783. A total of five WAs explain well all absorption features from the AGN outflows, which are spread over a wide range of parameters: ionization parameter log xi from 0.6 to 3.8, column density log N-H from 19.5 to 22.3 cm(-2), velocity v from 380 to 1060 km s(-1), and covering factor from 0.33 to 0.75. Not all the five WAs are consistent in pressure. Two of them are likely different parts of the same absorbing gas, and two of the other WAs may be smaller discrete clouds that are blown out from the inner region of the torus at different periods. The five WAs suggest a total mass outflowing rate within the range of 0.22-4.1 solar mass per year.
KeywordX-RAY-ABSORPTION NUCLEAR ENVIRONMENT IONIZED-GAS GALAXY NGC-3783 XMM-NEWTON ULTRAVIOLET VARIABILITY MODEL MASS galaxies: individual (NGC 3783) quasars: absorption lines ultraviolet: galaxies X-ray: galaxies
Language英语
Funding Project[China Scholarship Council] ; [NSFC] ; [100 talents program of the Chinese Academy of Sciences]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/67555
Collection中国科学院国家天文台
Affiliation1.中国科学院紫金山天文台
2.中国科学院国家天文台
Recommended Citation
GB/T 7714
Fu XiaoDan,Zhang ShuiNai,Sun Wei,et al. Joint fit of Warm Absorbers in COS and HETG spectra of NGC 3783[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2017,17(9).
APA Fu XiaoDan,Zhang ShuiNai,Sun Wei,Niu Shu,&Ji Li.(2017).Joint fit of Warm Absorbers in COS and HETG spectra of NGC 3783.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,17(9).
MLA Fu XiaoDan,et al."Joint fit of Warm Absorbers in COS and HETG spectra of NGC 3783".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 17.9(2017).
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