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arXiv 0704.3856astro-ph
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发射谱线对UBVR光度测定的影响

On the effect of emission lines on the UBVR photometry

A. Skopal

摘要:

我们调查的效果上的U,B,V,Rc和Rj的幅度从光谱中的发射线的去除。我们确定了“Dm”的修正,从有和没有发射线的通量的比率,从对象通过光度过滤器传输。采用精确和简化的手术入路。这种效应在经典共生星、共生新星和经典新星V1974 Cyg中得到了证实。结果表明,在所研究的典型共生星的辐射线中,U、B、V和Rc/Rj滤波器中观测到的辐射通量的20-30、30-40、10和26/20的分量分别是辐射的。共生新星(RR Tel和V1016 Cyg)和经典新星V1974 Cyg在210天时的影响最大(平均74,79,56和66/60个突变体)。最后给出了实际应用的例子。

英文摘要:

We investigate the effect on the U, B, V, Rc and Rj magnitudes of the removal of emission lines from a spectrum. We determined "Dm" corrections from the ratio of fluxes with and without emission lines, transmitted from the object through the photometric filter. An exact and a simplified approach for operative use were applied. The effect was demonstrated for classical symbiotic stars, symbiotic novae and the classical nova V1974 Cyg. It was found that about 20-30, 30-40, 10 and 26/20 percents of the observed flux in the U, B, V and Rc/Rj filter, respectively, is radiated in the emission lines of the investigated classical symbiotic stars. The largest effect was found for symbiotic novae (RR Tel and V1016 Cyg) and the classical nova V1974 Cyg at 210 days (in average of 74, 79, 56 and 66/60 percents). Examples for practical application are suggested.

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