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6 papers · 1 filter
Photometric Properties and Scaling Relations of Early Type Brightest Cluster Galaxies
F. S. Liu, X. Y. Xia, Shude Mao +2
We investigate the photometric properties of the early type Brightest Cluster Galaxies (BCGs) using a carefully selected sample of 85 BCGs from the C4 cluster catalogue with redshi…
Outflows and the Physical Properties of Quasars
Rajib Ganguly, Michael S. Brotherton, Sabrina Cales +3
We have investigated a sample of 5088 quasars from the Sloan Digital Sky Survey Second Data Release in order to determine how the frequency and properties of broad absorptions line…
The Growth of Black Holes and Their Host Spheroids in (Sub)mm-loud QSOs at High Redshift
C. N. Hao, X. Y. Xia, S. Mao +2
We study the growth of black holes and stellar population in spheroids at high redshift using several (sub)mm-loud QSO samples. Applying the same criteria established in an earlier…
Spectral Properties From Lyman-alpha to H-alpha For An Essentially Complete Sample of Quasars I: Data
Zhaohui Shang, Beverley J. Wills, D. Wills +1
We have obtained quasi-simultaneous ultraviolet-optical spectra for 22 out of 23 quasars in the complete PG-X-ray sample with redshift, z<0.4, and M_B<-23. The spectra cover rest-f…
Gas and Dust in the Taffy Galaxies: Ugc12914/15
Ming Zhu, Yu Gao, E. R. Seaquist +1
We present a comprehensive study of the dust and gas properties in the after-head-on-collision UGC12914/15 galaxy system using multi-transition CO data and SCUBA sub-mm continuum i…
Mid-to-Far Infrared Spectral Energy Distribution of Galaxies in Spitzer First Look Survey Field
Xiao-Qing Wen, Hong Wu, Chen Cao +1
We made model fitting to the mid-to-far infrared spectral energy distributions (SEDs) for different categories of galaxies in the main extragalactic field of the {\it Spitzer} Firs…