| タイトル | Gravitationally lensed arcs in two X-ray selected clusters of galaxies at z = 0.426 and z = 0.583 |
| 著者（英） | Gioia, I. M.; Luppino, G. A. |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 1992-11-01 |
| 言語 | eng |
| 内容記述 | The discovery of two clusters of galaxies that contain new gravitationally lensed images (arcs) of high-redshift background galaxies is reported. Both clusters, MS1621.5+2640 and MS2053.7-0449, were selected from the Einstein Extended Medium Sensitivity Survey based on their high X-ray luminosity. V-band CCD images of the clusters taken in 0.5 arcsec seeing are presented, and it is shown that the arcs in both clusters are thin; they remain unresolved in width, but are fragmented along their length. The arc in MS1621.5+2640 has a small radius of curvature (about 7 arcsec), and spans about 70 deg centered near a 2.6 mJy radio galaxy that is not the brightest cluster galaxy. The arc in MS2053.7-0449 spans 40 deg at a radius of about 16 arcsec with a center slightly offset from the optically dominant cluster galaxy. The arc fragments into two clumps that appear to be stretched images of background galaxies. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 93A17203 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/321831 |
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