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Difference between revisions of "Ji̍t-thâu"
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[[File:Sun SDO-HMI visible light 2011-06-07.jpg|thumb|Ji̍t-thâu]] | [[File:Sun SDO-HMI visible light 2011-06-07.jpg|thumb|Ji̍t-thâu]] | ||
'''Ji̍t-thâu''', ia̍h sī kóng '''Ji̍t''', mā hō '''thài-iông''', sī chi̍t lia̍p tōa-hêng hoat-kng ê [[thian-thé]]. Ji̍t-thâu ê tāng-le̍k-tiûⁿ ín-chhōa [[he̍k-chheⁿ]] kiam kî-tha [[thài-iông-hē]] thian-thé ê kiâⁿ-sóa. [[Tē-kiû]] téng ê oa̍h-mi̍h tōa-pō͘-hūn tio̍h óa-khò ji̍t-thâu | '''Ji̍t-thâu''', ia̍h sī kóng '''Ji̍t''', mā hō '''thài-iông''', sī chi̍t lia̍p tōa-hêng hoat-kng ê [[thian-thé]]. Ji̍t-thâu ê tāng-le̍k-tiûⁿ ín-chhōa [[he̍k-chheⁿ]] kiam kî-tha [[thài-iông-hē]] thian-thé ê kiâⁿ-sóa. [[Tē-kiû]] téng ê oa̍h-mi̍h tōa-pō͘-hūn tio̍h óa-khò ji̍t-thâu hoat ê kng kap jia̍t tit sè-miā. | ||
== Sèng-chit == | == Sèng-chit == | ||
Ji̍t-thâu ê poàn-kéng, kì hû-hō R<sub>☉</sub>, sī Tē-kiû ê 109 pōe, koh | Ji̍t-thâu ê poàn-kéng, kì hû-hō R<sub>☉</sub>, sī Tē-kiû ê 109 pōe, koh lī Tē-kiû 215 R<sub>☉</sub> hn̄g, só͘-tì tùi Tē khòaⁿ khì, Ji̍t ta chiàm thiⁿ 1/2° khoah. Ji̍t-thâu piáu-bīn bô kò͘-thé mā bô e̍k-thé; tōa-pō͘-hūn sī khì-thài [[goân-chú]], koh ū chiàm chió-hūn ê [[hun-chú]]. Chiàu kho-ha̍k ê hun-lūi, ji̍t-thâu sio̍k G2V sek-lia̍t-hêng (''spectral type''). G2 sī tāi-piáu n̂g-sek ê G un-tō͘ kai-kip chheⁿ, V tō sī [[chú hē-lia̍t]] (''main sequence'') chheⁿ ê ì-sù, sī kâng [[un-tō͘]] ka-kip tang-tiong ê phó͘-thong khoán. | ||
Kap kî-tha chú hē-lia̍t chheⁿ sio-kâng, ji̍t-thâu tùi [[jia̍t-hu̍t iông-ha̍p]] (''thermonuclear fusion'') hoán-èng tit tio̍h i phong-phài ê [[la̍t-thâu]]. Chit hō hoán-ēng koan-sia̍p tio̍h kā [[chúi-sò͘]] choán chò [[he-lí-ùm]] (''helium'') kiam pa̍t khoán khah tāng ê hu̍t-chú ê kòe-têng. Keng-kòe [[pàng-jia̍t iông-ha̍p hoán-èng]], [[kng-lia̍p]] (''photon'') tùi Ji̍t-thâu ê sim hiòng gōa pàng chhut, sim ê gōa-ûi sī [[hòng-siā khu]] (''radiative zone''), koh lâi sī [[tùi-liû-pau]] (''convective envelope''), [[kng-khoan]] (''photosphere''), [[sek-khoan]] (''chromosphere''), siōng gōa chân sī [[kho-ló͘-nah]] (''corona''). | Kap kî-tha chú hē-lia̍t chheⁿ sio-kâng, ji̍t-thâu tùi [[jia̍t-hu̍t iông-ha̍p]] (''thermonuclear fusion'') hoán-èng tit tio̍h i phong-phài ê [[la̍t-thâu]]. Chit hō hoán-ēng koan-sia̍p tio̍h kā [[chúi-sò͘]] choán chò [[he-lí-ùm]] (''helium'') kiam pa̍t khoán khah tāng ê hu̍t-chú ê kòe-têng. Keng-kòe [[pàng-jia̍t iông-ha̍p hoán-èng]], [[kng-lia̍p]] (''photon'') tùi Ji̍t-thâu ê sim hiòng gōa pàng chhut, sim ê gōa-ûi sī [[hòng-siā khu]] (''radiative zone''), koh lâi sī [[tùi-liû-pau]] (''convective envelope''), [[kng-khoan]] (''photosphere''), [[sek-khoan]] (''chromosphere''), siōng gōa chân sī [[kho-ló͘-nah]] (''corona''). | ||