大犬座δ的出射通量和有效温度
The Emergent Flux and Effective Temperature of Delta Canis Majoris
摘要：
新的角直径测定明亮的南方F8超巨星三角洲CMa使热出射通量和有效温度的恒星被确定与提高精度。光谱通量分布和辐射热通量由已发表的光度学和分光光度学确定，并与角直径相结合，得出辐射热出射通量F =（6.50 ± 0.24）× 10^7 W/m^2和有效温度Teff = 5818 ± 53 K。新的有效温度值与以前的干涉和红外通量法测定进行了比较。有效温度的准确性现在受到热通量的不确定性的限制，而不是角直径的不确定性。
英文摘要：
New angular diameter determinations for the bright southern F8 supergiant Delta CMa enable the bolometric emergent flux and effective temperature of the star to be determined with improved accuracy. The spectral flux distribution and bolometric flux have been determined from published photometry and spectrophotometry and combined with the angular diameter to derive the bolometric emergent flux F = (6.50 plus/minus 0.24) x 10^7 W/m^2 and the effective temperature Teff = 5818 plus/minus 53 K. The new value for the effective temperature is compared with previous interferometric and infrared flux method determinations. The accuracy of the effective temperature is now limited by the uncertainty in the bolometric flux rather than by the uncertainty in the angular diameter.
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