翻訳と辞書 Words near each other ・ R (Ullah) v Special Adjudicator ・ R (Williamson) v Secretary of State for Education and Employment ・ R . Ramakrishnan ・ R 510/900 ・ R A & T J Carll Ltd v Berry ・ R A Lister and Company ・ R A Streatfeild ・ R Adams ・ R Adams Cowley ・ R Adams Cowley Shock Trauma Center ・ R Airlines ・ R Amarendran ・ R and W Hawthorn ・ R Andromedae ・ R Apodis ・ R Aquarii ・ R Aquilae ・ R Arae ・ R Aurigae ・ R B Ferguson Club ・ R boat ・ R Boötis ・ R C Juneja ・ R Cancri ・ R Canis Majoris ・ R Canum Venaticorum ・ R Carinae ・ R Cassiopeiae ・ R Centauri ・ R City Mall Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク R Aquarii ： ウィキペディア英語版 R Aquarii R Aquarii (R Aqr) is a variable star in the constellation Aquarius. R Aquarii is a symbiotic star believed to contain a white dwarf and a Mira-type variable in a binary system. The orbital period is approximately 44 years.〔<〕 The main Mira-type star is a red giant, and varies in brightness by a factor of several hundred and with a period of slightly more than a year; this variability was discovered by Karl Ludwig Harding in 1810. It has a distance of about 200 parsec, and is one of the nearest symbiotic stars and a well known jet source. By its gravitational pull, the white dwarf draws in material from the red giant and occasionally ejects some of the surplus in weird loops to form the nebula seen in the linked image.〔(【引用サイトリンク】 Aladin previewer )〕 The whole system appears reddened because it is situated in a very dusty region of space, and its blue light is absorbed before reaching us. The nebula around R Aquarii is also known as Cederblad 211. According to Tom Polakis, as of 1998 no one had succeeded to observe this challenging object visually. It is possible that the nebula is the remnant of a nova-like outburst, which may have been observed by Japanese astronomers, in the year 930 AD. == 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「R Aquarii」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.