The prominent, yellowish bulge at the core of NGC 2775 is populated with older stars, encircled by tightly wound spiral arms adorned with areas of dark dust and young blue stars.
This Hubble image captures NGC 2775, a galaxy located approximately 67 million light years away in the Cancer constellation. Image credits: NASA/ESA/Hubble/F. Belfiore/J. Lee/Phangs-HST team.
NGC 2775 is situated about 67 million light years from the northern constellation of Cancer.
This galaxy was discovered on December 19, 1783, by British astronomer William Herschel, who was originally from Germany.
NGC 2775 is a principal member of the Galaxy’s Anti-Rahydra Cloud and part of a small group of galaxies known as the NGC 2775 group.
Also referred to as Caldwell 48, Leda 25861, or UGC 4820, NGC 2775 has a diameter of approximately 80,000 light years.
“NGC 2775 has an unusually smooth center that is devoid of gases, resembling an elliptical galaxy,” noted Hubble astronomers in a statement.
“It contains dusty rings with clusters of patchy stars, similar to spiral galaxies.
“Observing NGC 2775 from a single perspective makes it challenging to ascertain its true nature.”
“While some researchers classify NGC 2775 as a spiral galaxy due to its star and dust patterns resembling feathered rings, others categorize it as a lenticular galaxy.”
“Lenticular galaxies exhibit characteristics of both spiral and elliptical types.”
“The exact appearance of a lenticular galaxy remains uncertain, as they can form in various ways.”
“Some lenticular galaxies may have originated as spiral galaxies that fused with one another or may have lost their star-forming gas and prominent spiral arms.”
“They might also have accumulated gas in their surrounding discs, leading them to appear more oval-shaped.”
Astronomers suggest that NGC 2775 may have merged with other galaxies in the past.
“In the Hubble image, NGC 2775 features a hydrogen gas tail extending nearly 100,000 light years around the galaxy,” the researchers indicated.
“This faint tail could represent the remnants of one or more galaxies that ventured too close to NGC 2775 before being absorbed.”
“If NGC 2775 has indeed merged with other galaxies previously, it could help to explain the unusual appearance of the galaxy as we observe it today.”
“Hubble’s images of NGC 2775 were released earlier in 2020,” they added.
“The updated version includes observations of specific wavelengths of red light emitted by hydrogen gas clouds surrounding the young giant star.”
Source: www.sci.news
