Joel Stebbins

Japanese: ステビンズ（英語表記）Joel Stebbins

1878‐1966
American astronomer. Born in Nebraska, he studied at the University of California. After graduating from the University of Illinois, he became a professor at the University of Wisconsin, director of Washburn Observatory, and visiting astronomy at Mount Wilson Observatory in 1922. Throughout his life, he worked to improve the practical application of photoelectric photometry as an astronomy tool, and was always in a leading position. He first used selenium resistors and later phototubes, and in 1910 he was the first to discover the second minimum of the variable star Algol, demonstrating the power of photoelectric photometry. He and his students produced precise data, such as the distribution of interstellar matter in the Milky Way from photoelectric photometry of the color index of B-type stars, and the photometry and colorimetry of globular clusters and numerous galaxies, which are highly regarded as basic information about the Milky Way and the universe.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

1878‐1966
アメリカの天文学者。ネブラスカ州に生まれ，カリフォルニア大学に学ぶ。イリノイ大学を経て1922年以後ウィスコンシン大学教授兼ウォッシュバーン天文台台長，ウィルソン山天文台の客員を兼ねた。一生を通じ光電測光を天文学の道具として実用化し技術向上させることにつとめ，つねに指導的な立場にいた。初めセレン抵抗，後に光電管を用い，1910年に初めて変光星アルゴルの第2極小を発見して光電測光の威力を示した。B型星の色指数の光電測光から銀河系内の星間物質の分布を決定したり，球状星団や多数の銀河の測光と測色など，彼およびその門下生の手になる精密なデータは銀河系や宇宙の基礎資料として高く評価されている。

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