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单词 Photometric parallax
释义

Photometric parallax

中文百科

光度视差法 Photometric parallax method

(重定向自Photometric parallax)

光度视差法是天文学中使用数据分析,以恒星的亮度和颜色推断距离的方法。它被史隆数字巡天用于发现室女座星流 (室女座超星团) 的距离。

不同于恒星视差法,光度视差可用来估计超过10,000秒差距以外的天体距离,但在各别的测量精度上有许多的牺牲和限制。严格的说,它实际上未曾利用到任何视差的测量值,而可以认为是用词失当。

英语百科

Photometric parallax method 光度视差法

(重定向自Photometric parallax)

The photometric parallax method is a method of data analysis used in astronomy that uses the colours and apparent brightnesses of stars to infer their distances. It was used by the Sloan Digital Sky Survey to discover the Virgo super star cluster.

Unlike the stellar parallax method, photometric parallax can be used to estimate the distances of stars over 10 kpc away, at the expense of much more limited accuracy for individual measurements. Strictly speaking, it does not actually employ any measurements of parallax and can be considered a misnomer.

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更新时间:2025/6/23 7:42:41