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{{Short description|A impressive ringed galaxy}}
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Revision as of 16:44, 8 April 2025


LEDA 1313424 (also known as the Bullseye galaxy) is a collisional ring galaxy (CRG) located in the Pisces constellation around 567 million light years from Earth[2]. It is most known for its nine identified rings making it the galaxy with the most amount of rings discovered.[3]

This illustration compares the size of our own Milky Way galaxy to gargantuan galaxy LEDA 1313424, nicknamed the Bullseye. The Milky Way is about 100,000 light-years in diameter, and the Bullseye is almost two-and-a-half times larger, at 250,000 light-years across. NASA, ESA, Ralf Crawford (STScI)
Illustration of LEDA 1313424 compared to the Milky Way galaxy, the galaxy which Earth is located.

About 50 million years ago, a blue dwarf galaxy collided with LEDA 1313424 through its central region causing a burst of star formation and causing it to have an active galactic nucleus (AGN). The impactor is currently 130,00 light years from this galaxy.[4]

Morphology

This illustration shows the massive galaxy nicknamed the Bullseye face-on. Dotted circles indicate where each of its rings are, which formed like ripples in a pond after a blue dwarf galaxy (not shown) shot through its core about 50 million years ago. NASA’s Hubble Space Telescope helped researchers carefully pinpoint the location of most of its rings, many of which are piled up at the center. Data from the W. M. Keck Observatory in Hawaii helped the team confirm another ring. NASA, ESA, Ralf Crawford (STScI)
Artistic concept diagram of the rings of LEDA 1313424.

Currently, nine rings have been identified in LEDA 1313424 with several ‘pilled up’ near the central region of the galaxy and others extending tens of kiloparsecs from the center of the galaxy (~70 kpc). The outskirts of the galaxy has lots of star formation regions which surrounds the much redder inner ring structures.[3]

Collision Event

Around 50 million years ago, a small blue dwarf galaxy merged with LEDA 1313424 nearly head-on. The galaxy passes through the central region of LEDA 1313424 at an estimated speed ranging from 500-2000 kilometers per second.[5][6]

This collision event with the dwarf galaxy passing through the center of the galaxy is how LEDA 1313424 got its nickname. [7]

References

  1. ^ a b Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  2. ^ "Galaxy LEDA 1313424 (Advanced Camera for Surveys Image) - NASA Science". 2025-02-04. Retrieved 2025-04-08.
  3. ^ a b Pasha, Imad; van Dokkum, Pieter G.; Liu, Qing; Bowman, William P.; Janssens, Steven R.; Keim, Michael A.; Neufeld, Chloe; Abraham, Roberto (2025-02). "The Bullseye: HST, Keck/KCWI, and Dragonfly Characterization of a Giant Nine-ringed Galaxy". The Astrophysical Journal Letters. 980 (1): L3. doi:10.3847/2041-8213/ad9f5c. ISSN 2041-8205. {{cite journal}}: Check date values in: |date= (help)CS1 maint: unflagged free DOI (link)
  4. ^ "Galaxy LEDA 1313424". www.esa.int. Retrieved 2025-04-08.
  5. ^ Pasha, Imad; van Dokkum, Pieter G.; Liu, Qing; Bowman, William P.; Janssens, Steven R.; Keim, Michael A.; Neufeld, Chloe; Abraham, Roberto (2025-02). "The Bullseye: HST, Keck/KCWI, and Dragonfly Characterization of a Giant Nine-ringed Galaxy". The Astrophysical Journal Letters. 980 (1): L3. doi:10.3847/2041-8213/ad9f5c. ISSN 2041-8205. {{cite journal}}: Check date values in: |date= (help)CS1 maint: unflagged free DOI (link)
  6. ^ Lazaro, Enrico de (2025-02-04). "Astronomers Detect Nine Star-Filled Rings around Giant Galaxy | Sci.News". Sci.News: Breaking Science News. Retrieved 2025-04-08.
  7. ^ "Bullseye Galaxy (LEDA 1313424) – Constellation Guide". www.constellation-guide.com. Retrieved 2025-04-08.