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词汇 Proplyd
分类 英语词汇 英语翻译词典
释义

Proplyd

英语百科

Proplyd

 Proplyds in the Orion Nebula.

A proplyd, a syllabic abbreviation of an ionized protoplanetary disk, is an externally illuminated photoevaporating disk around a young star. Nearly 180 proplyds have been discovered in the Orion Nebula. Images of proplyds in other star-forming regions are rare, while Orion is the only region with a large known sample due to its relative proximity to the Earth.

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