Cornus Racemosa

by | Mar 29, 2018 | Cornus Racemosa

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The location of Arp 240 (circled in red)

Arp 240 is a pair of interacting spiral galaxies located in the constellation Virgo. The two galaxies are listed together as Arp 240 in the Atlas of Peculiar Galaxies.[4] The galaxy on the right is known as NGC 5257, while the galaxy on the left is known as NGC 5258. Both galaxies are distorted by the gravitational interaction, and both are connected by a tidal bridge, as can be seen in images of these galaxies.

One supernova has been observed in NGC 5258: SN 2020dko (type Ia, mag. 19).[5]

References

  1. ^ a b c d e f g h i "NASA/IPAC Extragalactic Database". Results for NGC 5257. Retrieved 2006-11-22.
  2. ^ a b c d e "NASA/IPAC Extragalactic Database". Results for NGC 5258. Retrieved 2006-11-22.
  3. ^ a b Mould, Jeremy R. (2000). "The Hubble Space Telescope Key Project on the Extragalactic Distance Scale. XXVIII. Combining the Constraints on the Hubble Constant". The Astrophysical Journal. 529 (2): 786–794. arXiv:astro-ph/9909260. Bibcode:2000ApJ...529..786M. doi:10.1086/308304. S2CID 197531313.
  4. ^ H. Arp (1966). "Atlas of Peculiar Galaxies". Astrophysical Journal Supplement. 14: 1–20. Bibcode:1966ApJS...14....1A. doi:10.1086/190147.
  5. ^ Transient Name Server entry for SN 2020dko. Retrieved 25 March 2023.
  • Media related to Arp 240 at Wikimedia Commons


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