HONG KONG: Astronomy undergraduates Michael Sandoval and Richard Vo from San Jose University have stumbled upon two of the most dense galaxies ever discovered. The students found that the unique cosmic objects are comparable to other globular clusters; however, the brightness factor exhibited by these galaxies is hundreds to thousands of times greater.
The first galaxy the students discovered is called M59-UCD3, which is approximately 200 times smaller than the Milky Way but is said to be heavier than other galaxies near Earth by about 10,000 times. The other system found by the students is called the M85-HCC1. Although this has almost the same size as many galaxies, its density is approximately a million times greater compared to other galaxies that can be observed on planet Earth. Both systems are known as ultracompact dwarfs (UCDs), a new classification of galaxies.
Aside from the data available in the Sloan Digital Sky Survey, the researchers also analyzed data from the Subaru Telescope, Hubble Space Telescope, and spectroscopy from the Goodman Spectrograph located on the Southern Astrophysical Research Telescope.
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