New Evidence for a Dark Galaxy

Images to accompany Press Release from the AAS meeting in Washington, D. C., Thursday January 12 9:20 AM EST

The Press Release is availible in Word and PDF formats.

Image 1: Image 1 300 pixels wide
CAPTION: Dark Galaxy VIRGOHI 21 has no starlight but radio waves from neutral hydrogen betray its existence. The contours superimposed on this optical image indicate how much gas was detected. This material was presented to the American Astronomical Society meeting in Washington, D. C. on January 12, 2006.
CREDIT: Arecibo Observatory / Cardiff University / Isaac Newton Telescope / Westerbork Synthesis Radio Telescope

The image is available in various sizes:

Image 2: Image 2 300 pixels wide
CAPTION: Neutral hydrogen gas streams between NGC 4254 (top left) and the Dark Galaxy VIRGOHI 21 (center right) in this image made from radio telescope observations at a wavelength of 21 centimeters. This interaction could explain the mystery of NGC 4254's peculiar lopsided shape. To the bottom left, a ring of gas can be seen around the galaxy NGC 4262. This material was presented to the American Astronomical Society meeting in Washington, D. C. on January 12, 2006.
CREDIT: Arecibo Observatory / Cardiff University / Westerbork Synthesis Radio Telescope

The image is available in various sizes: