 |
| Image credit: ESA/Hubble & NASA, B. Mutlu-Pakdil; Acknowledgment: G. Donatiello |
The recently found dwarf galaxy known as Donatiello II is located right in the center of this view acquired with the NASA/ESA Hubble Space Telescope, nestled among a scattering of far-off stars and even further-off galaxies. You are not alone if you can't quite make out Donatiello II's cluster of flimsy stars in this photograph. One of the three newly found galaxies is Donatiello II. An algorithm created to examine astronomical data for prospective galaxy candidates missed all three. When it comes to separating very faint galaxies from individual stars and background noise, even the greatest algorithms have their limitations. Identification in these difficult circumstances must be done manually by a committed person searching through the material.
These discoveries were made possible by the data gathered by the Dark Energy Survey (DES), a six-year-long, intensive observational project. Giuseppe Donatiello, an amateur astronomer, discovered three extremely weak galaxies that have now been given the names Donatiello II, III, and IV using DES data. All three are gravitationally connected to their more massive partner because they are satellites of the famous Sculptor Galaxy (also known as NGC 253).
In a separate search, a group of scientists used Hubble to acquire long-exposure pictures of a number of inconspicuous galaxies, including Donatiello II. They were able to validate their target galaxies' relationship with NGC 253 using Hubble photos, giving Donatiello's finding independent corroboration in addition to this new image.
No comments:
Post a Comment