Copyright:
Jes�s Vargas
(Sky-Astrophotography)
& Maritxu Poyal (Maritxu)
原文:
Is star AE Aurigae on fire? No. Even though AE Aurigae is named the flaming star, the surrounding nebula IC 405 is named the Flaming Star Nebula, and the region appears to have the color of fire, there is no fire. Fire, typically defined as the rapid molecular acquisition of oxygen, happens only when sufficient oxygen is present and is not important in such high-energy, low-oxygen environments such as stars. The material that appears as smoke is mostly interstellar hydrogen, but does contain smoke-like dark filaments of carbon-rich dust grains. The bright star AE Aurigae, visible toward the right near the nebula’s center, is so hot it is blue, emitting light so energetic it knocks electrons away from surrounding gas. When a proton recaptures an electron, light is emitted, as seen in the surrounding emission nebula. Pictured above, the Flaming Star nebula lies about 1,500 light years distant, spans about 5 light years, and is visible with a small telescope toward the constellation of the Charioteer (Auriga). Follow APOD on: Facebook, Google Plus, or Twitter
中文翻譯:
⭐️ 星星 AE Aurigae 真的在燃燒嗎？不，是的。雖然 AE Aurigae 被稱為「燃燒星」，且周圍的星雲 IC 405 被稱為「燃燒星雲」，而該區域也顯得如火般的顏色，但實際上並沒有任何火焰。火焰通常定義為迅速與氧氣結合的分子過程，但在高能、低氧的星體環境中並不適用。
出現在這裡的「煙」主要是星際氫氣，但也包含一些類似煙霧的暗條紋，由富碳的塵埃顆粒組成。明亮的 AE Aurigae 星星因為太過炙熱而呈藍色，發出能量如此強大的光線，以至於能夠擊走周圍氣體中的電子。當一個質子重新捕捉到電子時，就會發出光線，這就是我們在周圍的發射星雲中所見到的現象。
以上所述的燃燒星雲距今約 1,500 光年，跨越大約 5 光年，並可以透過小望遠鏡在御夫座（Auriga）的方向觀察到。🌌
#AEAurigae #FlamingStar #FlamingStarNebula #SpaceFacts #Astronomy #星空 #宇宙探索 #天文學 #星雲 #御夫座
來源:NASA每日圖片
