NGC 4274 is a barred spiral galaxy located in the constellation Coma Berenices, approximately 45 million light-years away from Earth. It was discovered by William Herschel on March 13, 1785. This galaxy is part of the NGC 4274 Group, a small galaxy group within the larger Virgo Cluster.
Structure and Features
NGC 4274 is classified as an SB(r)ab galaxy, meaning it has a well-defined bar structure at its center, surrounded by tightly wound spiral arms. The bar plays a crucial role in channeling gas toward the center, which can fuel star formation and feed the supermassive black hole thought to exist at its core. The galaxy also has ring-like dust lanes, which give it a layered appearance.
Star Formation and Activity
This galaxy contains a mix of older, yellowish stars in its central bulge and younger, bluer stars in its spiral arms, suggesting ongoing star formation. The presence of hydrogen gas (HII regions) indicates active stellar nurseries where new stars are forming.
Importance in Astronomy
NGC 4274 is an interesting target for studying galactic dynamics, particularly how bars influence the motion of stars and gas within a galaxy. Its structure also provides insight into galaxy evolution, as bars are thought to develop in mature spiral galaxies before eventually fading away.
Observing NGC 4274
With an apparent magnitude of 10.6, NGC 4274 can be seen with moderate-sized telescopes. It appears elongated with a bright central region and faint outer arms, making it a rewarding target for amateur astronomers exploring the Coma Berenices region.
Capture Details:
Telescope: Celestron Nexstar 8se
Filter: Optolong L-Pro
Camera: ZWO ASI294 MC Pro
Mount: Juwei-17
Total Time: 119×120″ 3 hours and 58 minutes
Capture Software: N.I.N.A.
Guiding: PHD2, ZWO asi120mm mini
Processed in: PixInsight
Additional details on Astrobin.com.