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First observations of CN(2-1), HCO$^{+}$(3-2) and C$_{2}$H(3-2) emission lines in the Perseus cluster: constraints on heating mechanisms in the cluster gas
Astrochemistry - ISM:abundances - galaxies: intergalactic medium - Galaxies: clusters: individual:Perseus - galaxies: individual: NGC 1275 - Galaxies: cooling fl ows
2011/10/8
We present the first observations of emission lines of CN(2-1), HCO$^{+}$(3-2) and C$_{2}$H(3-2) in the Perseus cluster. We observed at two positions: directly at the central galaxy, NGC 1275 and also...
王德忱回复黄建湘 《王德忱对费马大定理的“证明”中存在的错误的点评》。
Photometric Modelling of Close Binary Star CN And
Close binaries stars spot active starts light curve
2010/9/17
The results of two color photometry of active close binary CN And are presented and analyzed. The light curves of the system are obviously asymmetric, with the primary maximum brighter than the second...