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Share Research from Penn’s Department of Physics and Astronomy has produced the largest catalog of galaxy morphology classification to date. Led by former postdocs Jesús Vega-Ferrero and Helena Domínguez Sánchez, who worked with professor Mariangela Bernardi, this catalog of 27 million galaxy morphologies provides key insights into the evolution of the universe. The study was published in  The researchers used data from the Dark Energy Survey (DES), an international research program whose goal is to image one-eighth of the sky to better understand dark energy’s role in the accelerating expansion of the universe. A byproduct of this survey is that the DES data contains many more images of distant galaxies than other surveys to date. “The DES images show us what galaxies looked like more than 6 billion years ago,” says Bernardi.

Helena dominguez sanchezMike jarvisMariangela bernardiHelena domJesus vega ferreroMonthly notices of the royal astronomical societySchool of arts sciencesDark energy surveySloan digital sky surveyDepartment of physicsUniversity of pennsylvaniaPenn department of physicsMonthly noticesRoyal astronomicalInstituto de ciencias del espacioConsejo superior de investigaciones cient