Star Formation Histories within the Antennae Galaxies (Arp 244) (2009)
Zhang, Hong-Xin, Gao, Yu, Kong, Xu
With the imagery from GALEX, HST, 2MASS, and Spitzer, and at the resolution of MIPS 24 micron(~6"), we study the variations of the broadband spectral energy distributions (SEDs) of star-forming...
Star-Forming Galaxies at z~2 in the Hubble Ultra Deep Field (2009)
Kong, Xu, Zhang, Wei, Wang, Min
Using a simple color selection based on B-, z- and K-band photometry, BzK= (z-K)_AB-(B-z)_AB>-0.2, we picked out 52 star-forming galaxies at 1.4
The UV-optical colours of brightest cluster galaxies in optically and X-ray selected clusters (2009)
Wang, Jing, Overzier, Roderik, Kauffmann, Guinevere, Von Der Linden, Anja, Kong, Xu
Many brightest cluster galaxies (BCGs) at the centers of X-ray selected clusters exhibit clear evidence for recent star formation. However, studies of BCGs in optically-selected clusters show that...
Classification of Extremely Red Objects in the COSMOS Field (2009)
Kong, Xu, Fang, Guanwen, Arimoto, Nobuo, Wang, Min
We present a study of the classification of z ~1 extremely red objects (EROs), using a combination of HST/ACS, Spitzer/IRAC, and ground-based images of the COSMOS field. Our sample includes about...
Classification of Extremely Red Objects in the Hubble Ultra Deep Field (2009)
Fang, Guan-Wen, Kong, Xu, Wang, Min
In this paper we present a quantitative study of the classification of Extremely Red Objects (EROs). The analysis is based on the multi-band spatial- and ground-based observations (HST/ACS-$BViz$,...
Shapiro, Kristen L., Genzel, Reinhard, Schreiber, Natascha M. Förster, Tacconi, Linda J., Bouché, Nicolas, Cresci, Giovanni, ...
We present a simple set of kinematic criteria that can distinguish between galaxies dominated by ordered rotational motion and those involved in major merger events. Our criteria are based on the...
Clustering Property of Wolf-Rayet Galaxies in the SDSS (2008)
Zhang, Wei, Kong, Xu, Cheng, Fu-Zhen
We have analysed, for the first time, the clustering properties of Wolf-Rayet (W-R) galaxies, using a large sample of 846 W-R galaxies selected from the Data Release 4 (DR4) of the SDSS. We compute...
Shapiro, Kirsten L., Genzel, Reinhard, Förster Schreiber, Natascha M., Tacconi, Linda J., Bouché, Nicolas, Cresci, Giovanni, ...
Discovery of an evolved galaxy cluster at z > 2 (2008)
Onodera, Masato, Daddi, Emanuele, Kong, Xu, Arimoto, Nobuo, Renzini, Alvio, Brusa, Marcella, ...
Zhang, Wei, Kong, Xu, Li, Cheng, Zhou, Hong-yan, Cheng, Fu-zhen
We use a large sample of 174 Wolf-Rayet (WR) galaxies drawn from the Sloan Digital Sky Survey to study whether and how the slope of the stellar initial mass function depends on metallicity. We...
Using Weak Lensing Dilution to Improve Measurements of the Luminous and Dark Matter in A1689 (2006)
Medezinski, Elinor, Broadhurst, Tom, Umetsu, Keiichi, Coe, Dan, Benitez, Narciso, Ford, Holland, ...
The E/SO sequence of a cluster defines a boundary redward of which a reliable weak lensing signal can be obtained from background galaxies, uncontaminated by cluster members. For bluer colors, both...
The SINS survey: rotation curves and dynamical evolution of distant galaxies with SINFONI (2006)
Förster Schreiber, Natascha M., Genzel, Reinhard, Eisenhauer, Frank, Lehnert, Matthew D., Tacconi, Linda J., Nesvadba, Nicole, ...
The Surprisingly Steep Mass Profile of Abell 1689, from a Lensing Analysis of Subaru Images (2004)
Broadhurst, Tom, Takada, Masahiro, Umetsu, Keiichi, Kong, Xu, Arimoto, Nobuo, Chiba, Masashi, ...
Subaru observations of A1689 (z=0.183) are used to derive an accurate, model-independent mass profile for the entire cluster, r
This is the fourth paper in a series studying star formation rates, stellar components, metallicities, and star formation histories of a blue compact galaxy (BCG) sample. Using Ha, [OII]3727, IR,...
Spectroscopic study of blue compact galaxies III. Empirical population synthesis (2003)
Kong, Xu, Charlot, Stephane, Weiss, Achim, Cheng, Fuzhen
This is the third paper of a series dedicated to the study of the star formation rates, star formation histories, metallicities and dust contents of a sample of blue compact galaxies (BCGs). We...
A population synthesis study of the galaxy NGC5018 (2003)
Kong, Xu, Zhang, Wen-haoa, Li, Cheng, Cheng, Fu-zhen, Weiss, A.
Spectral Energy and Age Distributions for 51 Globular Cluster Candidates (2002)
Ma, Jun, Zhou, Xu, Chen, Jiansheng, Wu, Hong, Kong, Xu, Jiang, Zhaoji, ...
This paper is the fourth in a series presenting spectrophotometry of 51 globular cluster candidates, that were detected by Mochejska et al. in the nearby galaxy M33 using the data collected by the...
Principal component analysis for spectral indices of stellar populations (2001)
We apply the method of principal component analysis to a sample of simple stellar populations to select some age-sensitive spectral indices. Besides the well-known age-sensitive index, H B, we find...
SED, Age and Metallicity of Star Clusters in M33 (2001)
Ma, Jun, Zhou, Xu, Kong, Xu, Wu, Hong, Chen, Jiansheng, Jiang, Zhaoji, ...
In this paper we present CCD spectrophotometry of the star clusters that were detected by Chandar, Bianchi, & Ford in the nearby spiral galaxy M33, using the images obtained with the Beijing...