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Oph-IRS 48 is a star and an associated Accretion disk, 390 to 400Light Years from Earth in the constellation of Ophiuchus.〔( ALMA Discovers Comet Factory ).〕 The star is important because it has made Astronomers rethink their models of star system formation.〔( jp-carousel-117541 ).〕 Studies have shown the shape of the Accretion disk and its chemical composition is more complex in realiy than theoretic models had predicted, with molecules like H²CO and CH³OH being preasent.〔Nienke van der Marel (1), Ewine F. van Dishoeck (1 and 2), Simon Bruderer (2), Tim A. van Kempen , (Warm formaldehyde in the Oph IRS 48 transitional disk ).〕 Researchers have found that the accretion disk has an unexpected crescent shaped structure nicknamed the dust trap, which is thought to be conducting the process of planet formation in this young system.〔Simon Bruderer , Nienke van der Marel, Ewine F. van Dishoeck and Tim A. van Kempen ('Dust Trap' around Distant Star May Solve Planet Formation Mystery ).〕〔Gas structure inside dust cavities of transition disks: Oph IRS 48 observed by ALMA, Astronomy and Astrophysics. 12/2013; p562.〕 ==References== 〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Oph-IRS 48」の詳細全文を読む スポンサード リンク
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