国家自然科学基金(10973010)

作品数：6被引量：0H指数：0
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A Chandra study of the massive, distant galaxy cluster SDSS J0150–1005
《Research in Astronomy and Astrophysics》2013年第10期1155-1162,共8页Zhen-Zhen Qin Hai-Guang Xu Jing-Ying Wang Jun-Hua Gu 
Supported by the National Natural Science Foundation of China(Grant Nos. 10878001, 10973010 and 11125313);the National Basic Research Program of China (973 Program; Grant Nos. 2009CB824900 and 2009CB824904);the Shanghai Science and Technology Commission (Program of Shanghai Subject Chief Scientist; Grant Nos. 12XD1406200 and 11DZ2260700)
We present a study of a fossil cluster,SDSS J0150–1005（z 0.364）,with high spatial resolution based on the imaging spectroscopic analysis of Chandra observations.The Chandra X-ray image shows a relaxed and symmetric...
关键词：galaxies：clusters：general galaxies：evolution galaxies：halos—intergalactic medium X-rays：galaxies：clusters 
Group-scale asymmetric abundance structures in the NGC 533 group
《Research in Astronomy and Astrophysics》2012年第1期63-74,共12页Jun-Hua Gu Hai-Guang Xu Jing-Ying Wang Yu Wang Shao-Feng Xu Zhen-Zhen Qin Li-Yi Gu Tao An Zhong-Li Zhang Min Lei 
supported by the National Natural Science Foundation of China (Grant Nos. 10878001,10973010,and 11125313);the National Basic Research Program of China (973 Program;Grant Nos.2009CB824900 and 2009CB824904);Shanghai Jiao Tong University Innovation Fund For Postgraduates
By performing a two dimensional spectral analysis on the galaxy group NGC 533 with high-quality Chandra data, we find that the metal abundance distribution in this group is anisotropic. In the area around 2.5′ from t...
关键词：galaxies： clusters： individual （NGC 533） -- galaxy： abundances -- in-tergalactic medium -- X-rays： galaxies： clusters 
Biases in hydrostatic mass profiles introduced by hot gas substructures:Chandra study of four galaxy clusters
《Research in Astronomy and Astrophysics》2010年第10期1005-1012,共8页Li-Yi Gu Yu Wang Jun-Hua Gu Jing-Ying Wang Zhen-Zhen Qin Meng-Yu Yao Jian-Long Yang Hai-Guang Xu 
supported by National Natural Science Foundation of China(Grant Nos.10673008,10878001and10973010);the Ministry of Science and Technology of China(Grant No.2009CB824900/2009CB24904);the Ministry of Education of China(the NCET Program)
By analyzing the azimuthal variations of total gravitating mass profiles in the central 300 h^-1 71 kpc regions of four galaxy clusters with Chandra data, we find that the azimuthally-averaged mass profiles may have b...
关键词：cosmology dark matter -- galaxies CLUSTERS general -- galaxies inter-galactic medium -- X-rays GALAXIES CLUSTERS 
Central gas entropy excess as direct evidence for AGN feedback in galaxy groups and clusters
《Research in Astronomy and Astrophysics》2010年第10期1013-1022,共10页Yu Wang Hai-Guang Xu Jun-Hua Gu Li-Yi Gu Jing-Ying Wang Zhong-Li Zhang 
Supported by the National Natural Science Foundation of China(Grant Nos.10673008,10878001 and 10973010);the Ministry of Science and Technology of China(Grant No.2009CB824900/2009CB24904);the Ministry of Education of China(the NCET Program)
By analyzing Chandra X-ray data of a sample of 21 galaxy groups and 19 galaxy clusters, we find that in 31 sample systems there exists a significant central （R ≤ 10 h^-171 kpc） gas entropy excess （AK0）, which cor...
关键词：GALAXIES active- galaxies CLUSTERS general -- X-rays GALAXIES clus-ters -- （galaxies ） intergalactic medium 
Metal enrichment via ram pressure stripping in the IGM of the compact galaxy group RGH 80
《Research in Astronomy and Astrophysics》2010年第4期301-308,共8页Hai-Juan Cui Hai-Guang Xu Jun-Hua Gu Jing-Ying Wang Li-Yi Gu Yu Wang Zhen-Zhen Qin Tao An 
supported by the National Natural Science Foundation of China (Grant Nos. 10673008,10878001 and 10973010);the Ministry of Science and Technology of China (Grant No. 2009CB824900/2009CB24904);the Ministry of Education of China (the NCET Program)
By creating and analyzing two dimensional gas temperature and abundance maps of the RGH 80 compact galaxy group with high-quality Chandra data,we detect a high-abundance （ 0.7 Z⊙） arc,where the metal abundance is s...
关键词：galaxies：clusters：individual （RGH 80） - galaxy：abundance - intergalactic medium - X-rays：galaxies：clusters 
Clumpy metal concentrations in elliptical galaxies NGC 4374 and NGC 4636
《Research in Astronomy and Astrophysics》2010年第3期220-226,共7页Hai-Guang Xu Jun-Hua Gu Li-Yi Gu Zhong-Li Zhang Yu Wang Tao An 
supported by the National Natural Science Foundation of China(Grant Nos.10503008,10673008,10878001 and 10973010);the Ministry of Science and Technology of China(Grant No.2009CB824900/2009CB24904);the Ministry of Education of China(the NCET Program)
We present a high spatial resolution study of metal distributions in the nearby, gas-rich elliptical galaxies NGC 4374 and NGC 4636 with the Chandra ACIS archive data. We define the hardness ratio HRFeL as the ratio o...
关键词：galaxies： elliptical and lenticular cD -- galaxies： individual （NGC 4374 NGC 4636） -- galaxies： ISM -- ISM： abundances -- X-rays： galaxies 
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