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- FOR RELEASE: December 4, 1995
-
- PHOTO NO.: STScI-PRC95-47a
-
-
- DUST DISK AROUND A BLACK HOLE IN GALAXY NGC 4261
-
- This is a Hubble Space Telescope image of an 800-light-year-wide
- spiral-shaped disk of dust fueling a massive black hole in the center
- of galaxy, NGC 4261, located 100 million light-years away in the
- direction of the constellation Virgo.
-
- By measuring the speed of gas swirling around the black hole,
- astronomers calculate that the object at the center of the disk is 1.2
- billion times the mass of our Sun, yet concentrated into a region of
- space not much larger than our solar system.
-
- The strikingly geometric disk -- which contains enough mass to make
- 100,000 stars like our Sun -- was first identified in Hubble
- observations made in 1992. These new Hubble images reveal for the
- first time structure in the disk, which may be produced by waves or
- instabilities in the disk.
-
- Hubble also reveals that the disk and black hole are offset from the
- center of NGC 4261, implying some sort of dynamical interaction is
- taking place, that has yet to be fully explained.
-
- Credit: L. Ferrarese (Johns Hopkins University) and NASA
-
- Image files in GIF and JPEG format, captions, and press release text
- may be accessed on Internet via anonymous ftp from ftp.stsci.edu in
- /pubinfo:
- GIF JPEG
- PRC95-47 NGC 4261 Core gif/NGC4261C.gif jpeg/NGC4261C.jpg
-
- Higher resolution digital versions (300 dpi JPEG) of the release
- photograph will be available temporarily in /pubinfo/hrtemp:
- 95-47.jpg.
-
- GIF and JPEG images, captions and press release text are available via
- World Wide Web at URL http://www.stsci.edu/pubinfo/PR/95/47.html, or
- via links in http://www.stsci.edu/pubinfo/Latest.html, and in
- http://www.stsci.edu/pubinfo/Pictures.html.
-