Dr. L. Clifton Johnson’s research focuses on understanding star formation behavior at spatial scales ranging from that of galaxies down to individual star-forming complexes. Dr. Johnson combines optical data from the Hubble Space Telescope and sub-mm data from Atacama Large Millimeter Array to study stellar populations and the interstellar medium. Specifically, he investigates the formation and evolution of star cluster populations and young pre-main sequence star populations in nearby galaxies, including the Andromeda Galaxy and the Magellanic Clouds. Cliff studies how star and cluster formation processes depend on galactic environment, and tracks the earliest phases of low-mass star formation. Cliff uses citizen science and crowdsourcing in his research in collaboration with the Zooniverse organization, which is based out of Adler Planetarium and Oxford University.
Cliff Johnson (Northwestern University) and colleagues took this image using the Dark Energy Camera on the 4-meter Blanco Telescope at the Cerro Tololo Inter-American Observatory. Nineteen Starlink satellite trails crossed the image during the six-minute exposure. The image was taken as part of the DELVE survey, which is mapping the outskirts of the Magellanic Clouds,
Hubble Image Mosaic of Andromeda, based on PHAT survey data. This image, captured with the NASA/ESA Hubble Space Telescope, is the largest and sharpest image ever taken of the Andromeda galaxy, otherwise known as M31. You would need more than 600 HD television screens to display the whole image. It is the biggest Hubble image
NASA / ESA, J. Dalcanton, B.F. Williams, L.C. Johnson, PHAT team and R. Gendler
