BV(RI)_C_H{alpha} photometry of NGC 663
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We present new BV(RI)C_H{alpha} photometry of the young open cluster NGC 663. The H{alpha} photometry is complete down to magnitude R_C=15.4, corresponding to spectral type A5...
本研究针对年轻疏散星团NGC 663,提供了全新的BV、(RI)_C及Hα波段测光数据。其中Hα测光的完备性极限星等为R_C=15.4星等,对应光谱型A5……



