Differential photometry of the SB* BD+20 307
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Field star BD+20 307 is the dustiest known main-sequence star, based on the fraction of its bolometric luminosity, ~4%, that is emitted at infrared wavelengths. The particles...
场星BD+20 307是目前已知尘埃含量最高的主序星（main-sequence star），其红外波段（infrared wavelengths）辐射的光度占总光度（bolometric luminosity）的比例约为4%。该颗粒……
