…In 1982, Richard Brent Tully compiled distance data for about 2,200 galaxies based on the redshift values of their spectral lines, and from the spatial distribution of these galaxies, he confirmed the existence of the supergalaxy system (named the Local Supercluster by Tully) proposed by de Vaucouleurs, and clarified its three-dimensional structure. Figure 2 shows the galaxy density distribution map of the Local Supercluster that he obtained. The dense core is the Virgo cluster, and 20% of all galaxies are concentrated in this area. The part that stretches long along the x- axis is a flattened disk in three dimensions, and 40% of the galaxies are distributed in this area, and the remaining 20% are distributed in the protrusions that extend diagonally in four directions from the core. … *Some of the terminology that refers to the "galaxy density distribution map" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…82年タリーRichard Brent Tullyは,約2200個の銀河について,スペクトル線の赤方偏移の値に基づく距離のデータをとりまとめ,これら諸銀河の空間分布から,ド・ボークルールの唱えた超銀河系(タリーの命名では局部超銀河団)の存在を確認し,その三次元構造を明らかにした。図2は彼が得た局部超銀河団の銀河密度分布図で,密度の高い中核部はおとめ座の銀河団であり,この部分に全銀河の20%が集中する。x軸ぞいに長く伸びた部分は立体的には扁平円盤でこの部分に40%,そして残りの20%は中核部から斜めに4方向へ伸びた突起部に分布する。… ※「銀河密度分布図」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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