Interstellar Polarization and Extinction towards the Open Cluster NGC 457
Interstellar Polarization and Extinction towards the Open Cluster NGC 457
复制标题
疏散星团 NGC 457 的星际极化和消光
DOI:
10.1088/1538-3873/aa7f6c
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发表时间:
2017
影响因子:
3.5
通讯作者:
Kaltcheva, Nadia T.
中科院分区:
文献类型:
--
作者:
Topasna, Gregory A.;Daman, Eryn A.;Kaltcheva, Nadia T.
NGC 457 is a moderately reddened and relatively young open cluster very rich in variable stars, particularly Be stars, but not associated with any prominent star-forming field. We combine new multi-wavelength polarization measurements with existing UBV and uvby photometries to obtain precise estimates of the total-to-selective extinction in the field of the cluster and re-evaluate its distance and age. The polarization measurements show a tight alignment of the polarization vectors with the Galactic plane and yield an average value of the total-to-selective extinction of 3.05±0.17 for the cluster's field. Using this value and the confirmed color excess
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影响因子:
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作者:
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O. Eggen
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