Pump seat - Pompusa

Japanese: ポンプ座 - ぽんぷざ
Pump seat - Pompusa

A constellation that lies close to the southern horizon on spring evenings, adjacent to the southwest of Hydra. With no other visible stars than the 4th magnitude star α (alpha), it is difficult to picture the shape of the vacuum pump that 18th century French astronomer N. L. Lacaille envisioned. This constellation was created to commemorate the state-of-the-art vacuum pump at the time, which was improved by British physicist R. Boyle, known for Boyle's Law, and its former Japanese names include Air Pump and Exhaust Pump. However, the one depicted in Lacaille's star chart resembles an old-fashioned vacuum pump made by the Frenchman D. Papin.

[Asahi Fujii]

"The Complete Constellation Encyclopedia - Spring Constellations" by Akira Fujii (2003, Sakuhinsha)

[References] | Constellations | Papin | Boil | Lacaille

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

春の宵の南の地平線近く、うみへび座の南西に接する星座。4等のα(アルファ)星のほか目につく星もなく、18世紀のフランスの天文学者N・L・ラカイユがここに想像した、当時の真空ポンプの姿を思い浮かべるのはむずかしい。この星座は、ボイルの法則で知られるイギリスの物理学者R・ボイルらが改良した当時最新の真空ポンプを記念して設定されたもので、かつての日本名も空気ポンプ座、排気器座などとよばれていた。ただし、ラカイユの星図に描かれているのはフランスのD・パパンが製作した旧式の真空ポンプに似ている。

[藤井 旭]

『藤井旭著『星座大全――春の星座』(2003・作品社)』

[参照項目] | 星座 | パパン | ボイル | ラカイユ

出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例

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