Meredith Hughes, assistant professor of astronomy, is the co-author of “Debris Disks in the Scorpius-Centaurus OB Association Resolved by Alma,” published in The Astrophysical Journal, Vo. 828, No. 1. Jesse Lieman-Sifry ’15 also is a co-author of the article.
In addition, the international weekly journal of science Nature mentioned the article in a Sept. 8 publication.
The co-authors explored the idea of carbon-monoxide potentially being in large-star disks. As explained in her abstract, “Stars twice the size of the sun can feature carbon-monoxide-rich gas disks around them, contrary to the expectation that ultraviolet radiation would have stripped away the gas.”
Hughes used the “Atacama Large Millimeter/submillimeter Array in northern Chile to probe the regions around 24 young star systems, only about 5 million to 10 million years old. They chose stars surrounded by a disk of dust debris—resembling a scaled-up version of the Solar System’s Kuiper belt—this leftover material could form new planets, including gas giants.
In conclusion, the researchers noted that three of the larger stars in the sample had strong carbon monoxide emissions.