Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-12-07
Astronomy and Astrophysics
Astrophysics
Accepted for Publication in PASP, 10 pages, 3 figures
Scientific paper
10.1086/498291
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 part of the BATC multicolor survey of the Sky. The BATC multicolor filter system is specifically designed to exclude most of the bright and variable night-sky emission lines including the OH forest. Hence, it can present accurate SEDs of the observed objects. These spectral energy distributions are low-resolution spectra, and can reflect the stellar populations of the globular clusters. This paper confirms the conclusions of Schroder et al. that, M81 contains clusters as young as a few Gyrs, which also were observed in both M31 and M33
Burstein David
Chen Jiansheng
Jiang Zhaoji
Ma Jun
Wu Jianghua
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