| タイトル | Observations of surface-brightness fluctuations in Virgo |
| 著者（英） | Tonry, John L.; Ajhar, Edward A.; Luppino, Gerard A. |
| 著者所属（英） | Massachusetts Inst. of Tech.|Hawaii Univ. |
| 発行日 | 1990-11-01 |
| 言語 | eng |
| 内容記述 | VRI photometric observations of surface-brightness fluctuation in 13 Virgo Cluster galaxies, M32, and NGC 3379, obtained using an 800 x 800 CCD array on the 4-m telescope at KPNO during March 1989, are reported. The data-reduction techniques are described in detail, and the results are presented in tables and graphs. Particular attention is given to distance estimates derived from the I-band fluctuations: it is shown that NGC 4365 is behind the cluster, while NGC 4468 and NGC 4489 are in the foreground. The average distance to the cluster is found to be 17 + or - 1 Mpc, with H0 = 78 + or - 6 km/sec Mpc; the corresponding values from a direct isochrone calibration are 21 Mpc and 64 + or - 5 km/sec Mpc. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 91A14278 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/351956 |
|
