飛馬座 LL ê 特別捲螺仔

探索宇宙¹！逐工會揀一幅無仝款 ê 影像抑是相片，𤆬你熟似咱這个迷人 ê 宇宙，閣有專業天文學者²為你解說³。

• 原始文章：The Extraordinary Spiral in LL Pegasi
• 影像來源：NASA, ESA, Hubble, HLA; 資料處理 kah 版權：Jonathan Lodge
• 台文翻譯：An-Li Tsai (NCU)

[漢羅] 飛馬座 LL ê 特別捲螺仔

是啥物造成倒爿頂懸彼个奇怪 ê 捲螺仔結構？ 無人知影。 伊 ê 外層氣體去予噴--出來，實在是有成是 雙星 系統 ê 行星形星雲 時期。 這个 大捲螺仔 有 1/3 光年 闊，有捲 4-5 輾完整 ê 彎。 是講遮爾整齊 ê 結構實在是毋捌看過。 假使予捲螺仔氣體一个脹大率，按呢每 800 年 to̍h 應該出現一輾新 ê，這 kah 兩粒恆星互踅 ê 時間相 siâng。 這个 雙星系統 叫做 飛馬座 LL，嘛叫做 AFGL 3068 抑是 IRAS 23166+1655。 這張影像是 哈伯太空望遠鏡 tī 近 紅外線 波段翕 ê。 這个 捲螺仔結構是按怎會發光，咱 到今猶毋知。 目前有一个假說是講，這个光應該是去予內底 ê 恆星照予光 ê。

[POJ] Hui-má-chō LL ê te̍k-pia̍t kńg-lê-á

Sī siáⁿ-mih chō-sêng tò-pêng téng-koân hit-ê kî-koài ê kńg-lê-á kiat-kò͘? Bô-lâng chai-iáⁿ. I ê gōa-chân khì-thé khì hō͘ phùn--chhut-lâi, si̍t-chāi sī ū-sêng sī siang-chhiⁿ-hē-thóng ê kiâⁿ-chhiⁿ-hêng seng-hûn sî-ki. Chit-ê tōa-kńg-lê-á ū saⁿ-hun-chi-it kng-nî khoah, ū kńg sì gō͘ liàn oân-chéng ê oan. Sī-kóng chiah-nī chéng-chê ê kiat-kò͘ si̍t-chāi sī m̄-bat khòaⁿ-kòe. Ká-sú hō͘ kńg-lê-á khì-thé chi̍t-ê tiùⁿ-tōa-lu̍t, án-ni múi poeh-pah nî to̍h eng-kai chhut-hiān chi̍t-liàn sin ê, che kah nn̄g-lia̍p hêng-chhiⁿ hō͘-se̍h ê sî-kan sio-siâng. Chit-ê siang-chhiⁿ-hē-thóng kiò-chò Hui-má-chō LL, mā kiò-chò AFGL sam-khòng-lio̍k-pat iah-sī IRAS jī-sam-it-lio̍k-lio̍k ka it-lio̍kngó͘-ngó͘. Chit-tiuⁿ iáⁿ-siōng sī Ha-peh thài-khong-bōng-oán-kiàⁿ tī kīn-âng-gōa-sòaⁿ pho-tōaⁿ hip ê. Chit-ê kńg-lê-á kiat-kò͘ sī án-ná ē hoat-kng, lán kàu-taⁿ iáu m̄-chai. Bo̍k-chêng ū chi̍t-ê ká-soat sī-kóng, chit-ê kńg eng-kai sī khì hō͘ lāi-té ê hêng-chhiⁿ chiò hō͘ kńg ê.

[KIP] Hui-má-tsō LL ê ti̍k-pia̍t kńg-lê-á

Sī siánn-mih tsō-sîng tò-pîng tíng-kuân hit-ê kî-kuài ê kńg-lê-á kiat-kòo? Bô-lâng tsai-iánn. I ê guā-tsân khì-thé khì hōo phùn--tshut-lâi, si̍t-tsāi sī ū-sîng sī siang-tshinn-hē-thóng ê kiânn-tshinn-hîng sing-hûn sî-ki. Tsit-ê tuā-kńg-lê-á ū sann-hun-tsi-it kng-nî khuah, ū kńg sì gōo liàn uân-tsíng ê uan. Sī-kóng tsiah-nī tsíng-tsê ê kiat-kòo si̍t-tsāi sī m̄-bat khuànn-kuè. Ká-sú hōo kńg-lê-á khì-thé tsi̍t-ê tiùnn-tuā-lu̍t, án-ni muí pueh-pah nî to̍h ing-kai tshut-hiān tsi̍t-liàn sin ê, tse kah nn̄g-lia̍p hîng-tshinn hōo-se̍h ê sî-kan sio-siâng. Tsit-ê siang-tshinn-hē-thóng kiò-tsò Hui-má-tsō LL, mā kiò-tsò AFGL sam-khòng-lio̍k-pat iah-sī IRAS jī-sam-it-lio̍k-lio̍k ka it-lio̍kngó͘-ngóo. Tsit-tiunn iánn-siōng sī Ha-peh thài-khong-bōng-uán-kiànn tī kīn-âng-guā-suànn pho-tuānn hip ê. Tsit-ê kńg-lê-á kiat-kòo sī án-ná ē huat-kng, lán kàu-tann iáu m̄-tsai. Bo̍k-tsîng ū tsi̍t-ê ká-suat sī-kóng, tsit-ê kńg ing-kai sī khì hōo lāi-té ê hîng-tshinn tsiò hōo kńg ê.

[English] The Extraordinary Spiral in LL Pegasi

What created the strange spiral structure on the upper left? No one is sure, although it is likely related to a star in a binary star system entering the planetary nebula phase, when its outer atmosphere is ejected. The huge spiral spans about a third of a light year across and, winding four or five complete turns, has a regularity that is without precedent. Given the expansion rate of the spiral gas, a new layer must appear about every 800 years, a close match to the time it takes for the two stars to orbit each other. The star system that created it is most commonly known as LL Pegasi, but also AFGL 3068 and IRAS 23166+1655. The featured image was taken in near-infrared light by the Hubble Space Telescope. Why the spiral glows is itself a mystery, with a leading hypothesis being illumination by light reflected from nearby stars.

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