Документ взят из кэша поисковой машины. Адрес
оригинального документа
: http://www.arcetri.astro.it/~palla/ANDREAIMMAGINI/Galassie/CentaurusA.html
Дата изменения: Tue Apr 10 19:33:11 2001 Дата индексирования: Sat Dec 22 08:57:34 2007 Кодировка: Поисковые слова: m 2 |
CENTAURUS A: THE INSIDE STORYHubble's Near Infrared Camera and Multi-Object Spectrometer was used to peer past the dust to discover a tilted disk of hot gas at the galaxy's center (white bar running diagonally across image center). This 130 light-year diameter disk encircles a suspected black hole which may be one billion times the mass of our Sun. The disk feeds material to presumably an inner, unresolved accretion disk that is made up of gas entrapped by the black hole. The red blobs near the disk are glowing gas clouds which have been heated up and ionized by the powerful radiation from the active nucleus. The false-color NICMOS image was taken on Aug. 11, 1997 at a wavelength of 1.87 microns ("Paschen alpha"), characteristic of ionized Hydrogen. Centaurus A (NGC 5128) Fast Facts Right Ascension: 13 : 25.5 (hours : minutes)
Credit: E.J. Schreier, (STScI) and NASA Team members are: Ethan J. Schreier, Alessandro Marconi,
|