223 citations · 1.9k across the 70 of their papers we have counts for
35 papers · 1 filter
Optical Variability of the Radio Source J 1128+5925
Jianghua Wu, Xu Zhou, Jun Ma +3
Very recently, J 1128+5925 was found to show strong intraday variability at radio wavelengths and may be a new source with annual modulation of the timescale of its radio variabili…
Metal Abundance Properties of M81 Globular Cluster System
Jun Ma, David Burstein, Zhou Fan +5
This paper is the third in the series of papers on M81 globular clusters. In this paper, we present spatial and metal abundance properties of 95 M81 globular clusters, which compri…
Structural Parameters of Mayall II = G1 in M31
J. Ma, R. de Grijs, D. Chen +6
Mayall II = G1 is one of the most luminous globular clusters (GCs) known in M31. New deep, high-resolution observations with the Advanced Camera for Surveys on the {\sl Hubble Spac…
BATC 13-band Photometry of Open Cluster NGC 7789
Zhen-Yu Wu, Xu Zhou, Jun Ma +3
We present 13-band CCD intermediate-band spectrophotometry of a field centered on the open cluster NGC 7789 from 400 to nearly 1000 nm, taken with Beijing-Arizona-Taiwan-Connecticu…
Age constraints for an M31 globular cluster from SEDs-fit
Jun Ma, Yanbin Yang, David Burstein +4
We have constrained the age of the globular cluster S312 in the Andromeda galaxy (M31) by comparing its multicolor photometry with theoretical stellar population synthesis models.…
Optical Monitoring of BL Lacertae Object S5 0716+714 with a Novel Multi-Peak Interference Filter
Jianghua Wu, Xu Zhou, Jun Ma +3
We at first introduce a novel photometric system, which consists of a Schmidt telescope, an objective prism, a CCD camera, and, especially, a multi-peak interference filter. The mu…
Membership Determination of Open Cluster M48 Based on BATC Thirteen-Band Photometry
Zhen-Yu Wu, Xu Zhou, Jun Ma +2
Beijing-Arizona-Taiwan-Connecticut (BATC) multi-band photometric data in the field of open cluster M48 are used to determine its membership. By comparing observed spectral energy d…
Evolution of Galaxy Luminosity Function and Luminosity Function by Density Environment at 0.03<z<0.5
Lifang Xia, Xu Zhou, Yanbin Yang +2
Using galaxy sample observed by the BATC large-field multi-color sky survey and galaxy data of SDSS in the overlapped fields, we study the dependence of the restframe -band gala…
Optical Monitoring of BL Lacertae Object OJ 287: a 40-Day Period?
Jianghua Wu, Xu Zhou, Xuebing Wu +6
We present the results of our optical monitoring of the BL Lacertae object OJ 287 during the first half of 2005. The source did not show large-amplitude variations during this peri…
Optical Photometry of Type II-P Supernova 2004dj in NGC 2403
Tianmeng Zhang, Xiaofeng Wang, Weidong Li +4
We present photometric data of the type II-P supernova (SN) 2004dj in NGC 2403. The multicolor light curves cover the SN from 60 to 200 days after explosion, and are measure…
Spectral Energy Distributions of M81 Globular Clusters in BATC Multicolor Survey
Jun Ma, Xu Zhou, David Burstein +4
In this paper, we give the spectral energy distributions of 42 M81 globular clusters in 13 intermediate-band filters from 4000 to 10000 A, using the CCD images of M81 observed as p…
037-B327 in M31: Luminous Globular Cluster or Core of a Former Dwarf Spheroidal Companion to M31?
Jun Ma, Sidney van den Bergh, Hong Wu +6
037-B327 is of interest because it is both the most luminous and the most highly reddened cluster known in M31. Deep observations with the Advanced Camera for Surveys on the Hubble…
Identification of X-ray Point Sources and Study on the Nature of 62 X-ray Globular Cluster Candidates in M31
Zhou Fan, Jun Ma, Xu Zhou +3
This paper includes two parts. The first is to present the spectral energy distributions (SEDs) of 49 globular cluster (GC) X-ray sources in the BATC 13 intermediate-band filters f…
Color and Metallicity Distributions of M81 Globular Clusters
Jun Ma, Xu Zhou, Jiansheng Chen +4
In this paper we present catalogs of photometric and spectroscopic data for M81 globular clusters (GCs). The catalogs include B- and V- photometric and reddening data of 95 GCs, an…
Optical Monitoring of BL Lac Object S5 0716+714 with High Temporal Resolution
Jianghua Wu, Bo Peng, Xu Zhou +3
Optical monitoring of S5 0716+714 was performed with a 60/90 Schmidt telescope in 2003 November and December and 2004 January for studying the variability of the object on short ti…
13 Color Photometry of Open Cluster M48
Zhen-Yu Wu, Xu Zhou, Jun Ma +2
This paper presents 13 color CCD intermediate-band spectrophotometry of a field centered on the open cluster M48 (NGC 2548), from 400nm to nearly 1000nm, taken with Beijing-Arizona…
The metallicity distribution of F/G dwarfs derived from BATC survey data
Cui-hua Du, Xu Zhou, Jun Ma +4
Based on synthetic flux spectra calculated from theoretical atmospheric models, a calibration of temperature and metallicity for the dwarfs observed in the Beijing-Arizona-Taiwan-C…
Optical Photometry of SN 1993J: Years 1995 to 2003
Tianmeng Zhang, Xiaofeng Wang, Xu Zhou +4
In this paper, the late-time optical photometry of supernova (SN) 1993J in M81 from Feburary 1995 to Janurary 2003 is presented. The observations were performed in a set of interme…
Multicolor Photometric Observations of Optical Candidates to Faint ROSAT X-ray Sources in a 1 deg field of the BATC Survey
Haotong Zhang, Suijian Xue, David Burstein +6
We present optical candidates for 75 X-ray sources in a deg overlapping region with the medium deep ROSAT survey. These candidates are selected using the multi-color C…
Large-Field Multicolor Study of Abell 168 : Subclusters, Dynamics and Luminosity Functions
Yanbin Yang, Xu Zhou, Qirong Yuan +4
This paper presents a multicolor study of the nearby cluster of galaxies Abell 168 (z=0.045) with 13 intermediate-band filters in the Beijing-Arizona-Taiwan-Connecticut (BATC) filt…
Multicolor Photometry of the Galaxies in Abell 2255 by the BATC and SDSS Surveys
Qirong Yuan, Xu Zhou, Zhaoji Jiang
We present our optical multicolor photometry for the nearby cluster of galaxies Abell 2255 with 13 intermediate filters in the BATC system. The spectral energy distributions (SEDs)…
H-alpha +[NII] Observations of the HII Regions in M81
W. P. Lin, X. Zhou, D. Burstein +2
In a first of a series of studies of the H-alpha + [NII] emission from nearby spiral galaxies, we present measurements of H-alpha + [NII] emission from HII regions in M81. Our meth…
Galactic structure studies with BATC star counts
Cuihua Du, Xu Zhou, Jun Ma +6
We report the first results of star counts carried out with the National Astronomical Observatories (NAOC) 60/90 cm Schmidt Telescope in 15 intermediate-band filters from 3000 to 1…
Spectral Energy and Age Distributions for 51 Globular Cluster Candidates
Jun Ma, Xu Zhou, Jiansheng Chen +5
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…