3 papers
astro-ph2002
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…
astro-ph2001
SED, Age and Metallicity of Star Clusters in M33
Jun Ma, Xu Zhou, Xu Kong +5
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 t…
astro-ph2000
Some statistical properties of spiral galaxies
Jun Ma, Junliang Zhao, Chenggang Shu +1
This paper presents some statistical correlations of 72 northern spiral galaxies. The results show that early-type spirals that are brighter, and thicker, and the axis ratios ($H_{…