Zobrazeno 1 - 10
of 76
pro vyhledávání: '"Gu, Q. S."'
We take advantage of a state-of-art semi analytic model of galaxy formation, and the model presented in \citet{contini21a}, to investigate the mass distribution of Brightest Cluster Galaxies (BCGs) and Intra-Cluster Light (ICL) by addressing two poin
Externí odkaz:
http://arxiv.org/abs/2202.10675
The origin of the multi-band activities (outbursts/flares) of blazars is still a heavily debated topic. Shock and magnetic reconnection have long been considered as possible triggers for the multi-band activities. In this paper, we present an explora
Externí odkaz:
http://arxiv.org/abs/1907.01997
Autor:
Ding, N., Luo, B., Brandt, W. N., Paolillo, M., Yang, G., Lehmer, B. D., Shemmer, O., Schneider, D. P., Tozzi, P., Xue, Y. Q., Zheng, X. C., Gu, Q. S., Koekemoer, A. M., Vignali, C., Vito, F., Wang, J. X.
In deep X-ray surveys, active galactic nuclei (AGNs) with a broad range of luminosities have been identified. However, cosmologically distant low-luminosity AGN (LLAGN, $L_{\mathrm{X}} \lesssim 10^{42}$ erg s$^{-1}$) identification still poses a chal
Externí odkaz:
http://arxiv.org/abs/1810.09465
Autor:
Wang, Tao, Elbaz, D., Alexander, D. M., Xue, Y. Q., Gabor, J. M., Juneau, S., Schreiber, C., Zheng, X-Z., Wuyts, S., Shi, Y., Daddi, E., Shu, X-W., Fang, G-W., Huang, J-S., Luo, B., Gu, Q-S.
Publikováno v:
A&A 601, A63 (2017)
We explore the dependence of the incidence of moderate-luminosity ($L_{X} = 10^{41.9-43.7}$ erg s$^{-1}$) AGNs and the distribution of their accretion rates on host color at 0.5 < z < 2.5, using deep X-ray data in GOODS fields. We use extinction-corr
Externí odkaz:
http://arxiv.org/abs/1612.03179
Autor:
Luo, B., Brandt, W. N., Xue, Y. Q., Lehmer, B., Alexander, D. M., Bauer, F. E., Vito, F., Yang, G., Basu-Zych, A. R., Comastri, A., Gilli, R., Gu, Q. -S., Hornschemeier, A. E., Koekemoer, A., Liu, T., Mainieri, V., Paolillo, M., Ranalli, P., Rosati, P., Schneider, D. P., Shemmer, O., Smail, I., Sun, M., Tozzi, P., Vignali, C., Wang, J. -X.
We present X-ray source catalogs for the $\approx7$ Ms exposure of the Chandra Deep Field-South (CDF-S), which covers a total area of 484.2 arcmin$^2$. Utilizing WAVDETECT for initial source detection and ACIS Extract for photometric extraction and s
Externí odkaz:
http://arxiv.org/abs/1611.03501
We present a new method to model a HST/COS spectrum, aimed to analyze intrinsic UV absorption from the outflow of Mrk 290, a Seyfert I galaxy. We use newly updated XSTAR to generate photoionization models for the intrinsic absorption from the AGN out
Externí odkaz:
http://arxiv.org/abs/1412.2935
Autor:
An, F. X., Zheng, X. Z., Wang, W. -H., Huang, J. -S., Kong, X., Wang, J. -X., Fang, G. W., Zhu, F., Gu, Q. -S., Wu, H., Hao, L., Xia, X. -Y.
Publikováno v:
Fang Xia An et al. 2014 ApJ, 784, 152
Using deep narrow-band $H_2S1$ and $K_{s}$-band imaging data obtained with CFHT/WIRCam, we identify a sample of 56 H$\alpha$ emission-line galaxies (ELGs) at $z=2.24$ with the 5$\sigma$ depths of $H_2S1=22.8$ and $K_{s}=24.8$ (AB) over 383 arcmin$^{2
Externí odkaz:
http://arxiv.org/abs/1402.3599
We present galaxy spectroscopic data on a pencil beam of $10.75' \times7.5'$ centered on the X-ray cluster RXJ0054.0-2823 at $z = 0.29$. We study the spectral evolution of galaxies from $z=1$ down to the cluster redshift in a magnitude-limited sample
Externí odkaz:
http://arxiv.org/abs/1011.1947
We present the Spitzer Space Telescope Infrared Array Camera (IRAC) observations for a sample of local elliptical galaxies to study later stages of AGN activities. A sample of 36 elliptical galaxies is selected from the Palomar spectroscopic survey.
Externí odkaz:
http://arxiv.org/abs/0907.0170
Our analysis on the two magnitude-limited samples of LINERs suggests a correlation between $L_{\FIR}/L_{\B}$ or f(25\micron)/f(60\micron), and Hubble-type index at $>$99.99% significance level. As $L_{\FIR}/L_{\B}$ and f(25\micron)/f(60\micron) are c
Externí odkaz:
http://arxiv.org/abs/astro-ph/0009364