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Hubble Reveals Unique Spiral Galaxy NGC 4698
Confirmed
In Short: NASA's Hubble Space Telescope captures a spiral galaxy with unusual arms that hover around its perimeter rather than winding inward.
Unlike many other spiral galaxies, NGC 4698, located about 55 million light-years away in the constellation Virgo, has spiral arms that only appear in the outer reaches of the galaxy, avoiding its glowing center.
Astronomers believe that an external force, rather than internal dynamics, is responsible for this unique structure.
The Hubble image reveals the galaxy's starry bulge, a diffuse off-white glow from smaller, older, and cooler stars, peeking above and below the dusty disk.
Chandra X-ray data and optical and infrared data from Hubble and the James Webb Space Telescope highlight the galaxy's black hole activity and stellar nurseries.
This galaxy, while resembling a typical spiral galaxy with a flat, starry disk and a diffusely glowing center, is far from normal, showcasing the impact of external forces on galactic structure.
What's confirmed
- Unlike many other spiral galaxies, NGC 4698, located about 55 million light-years away in the constellation Virgo, has spiral arms that only appear in the outer reaches of the galaxy, avoiding its glowing center.
- Astronomers believe that an external force, rather than internal dynamics, is responsible for this unique structure.
- The Hubble image reveals the galaxy's starry bulge, a diffuse off-white glow from smaller, older, and cooler stars, peeking above and below the dusty disk.
- Chandra X-ray data and optical and infrared data from Hubble and the James Webb Space Telescope highlight the galaxy's black hole activity and stellar nurseries.
- This galaxy, while resembling a typical spiral galaxy with a flat, starry disk and a diffusely glowing center, is far from normal, showcasing the impact of external forces on galactic structure.
What's still developing
- Astronomers have found that the culprit likely lies outside the galaxy.
- The arms instead hover in a ring-like structure around the perimeter of the galaxy.
- Systems like II Zw 096 show us how powerful galaxy collisions shaped the early universe.
- In September 2022, astronomers observed something very odd in a galaxy around 7.5 billion light-years from Earth.
- In a recent study, a team led by astronomers from the University of California, Santa Barbara (UCSB) observed RBH-1 using data from the Hubble Space Telescope and the James Webb Space Telescope.
- As Islam and his colleagues note in their paper, the galaxy (which they named GX) still shows signs of this merger.
- Extending from this galaxy was a thin line stretching more than 202,000 light-years from the galaxy's center.
- The team named this feature RBH-1 and deduced that it was a supermassive black hole kicked from its galaxy by some violent event.