Tag Archive for 'SDP 81'

Composite image of the gravitational lens SDP.81 showing the distorted ALMA image of the more distant galaxy (red arcs) and the Hubble optical image of the nearby lensing galaxy (blue center object). By analyzing the distortions in the ring, astronomers have determined that a dark dwarf galaxy (data indicated by white dot near left lower arc segment) is lurking nearly 4 billion light-years away. Image credit: Y. Hezaveh, Stanford University / ALMA / NRAO / ESO / NAOJ / NASA / ESA / Hubble Space Telescope.

Astronomers Spot Dwarf Dark-Matter Dominated Galaxy 4 Billion Light-Years Away

Apr 15, 2016 by News Staff

Analysis of the very high resolution Atacama Large Millimeter/submillimeter Array (ALMA) observations of the gravitational lens SDP.81 reveals a dwarf...

This composite image shows the gravitationally lensed galaxy SDP.81; the bright orange central region of the ring reveals the glowing dust in this distant galaxy; the surrounding lower-resolution portions of the ring trace the millimeter wavelength light emitted by carbon monoxide; the diffuse blue element at the center of the ring is from the intervening lensing galaxy. Image credit: ALMA / NRAO / ESO / NAOJ / B. Saxton / AUI / NSF / NASA / ESA / Hubble / T. Hunter.

ALMA Sees Star Nurseries in Gravitationally Lensed Galaxy SDP 81

Jun 8, 2015 by News Staff

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) radio telescope in Chile have captured detailed images of the gravitationally...