Facts about Arp 273

1. 07

   Approximately 500 million years will elapse before the smaller galaxy in Arp 273 completely merges with UGC 1810, ultimately forming a single elliptical galaxy.

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2. 06

   UGC 1810, the dominant galaxy in Arp 273, exhibits a prominent tidal tail extending over 100,000 light-years as a result of its gravitational interaction with the smaller companion galaxy.

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3. 05

   In 2010, spectroscopic analysis of Arp 273 revealed that the larger UGC 1810 galaxy possesses a actively accreting supermassive black hole at its core, classifying it as a Seyfert 2 galaxy.

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4. 04

   Gravitational interactions between Arp 273's galaxies have stretched the smaller companion into a ring-like structure, distorting its original morphology over millions of years.

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5. 03

   Hubble Space Telescope observations reveal that Arp 273's smaller companion galaxy contains significantly younger stellar populations than the dominant spiral galaxy, indicating recent star formation triggered by their gravitational interaction.

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6. 02

   Located approximately 250 million light-years away, Arp 273 was first catalogued by Halton Arp in his 1966 Atlas of Peculiar Galaxies as entry number 273.

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7. 01

   The smaller galaxy in Arp 273 is positioned approximately 40,000 light-years above the larger galaxy's disk, creating a striking rose-like morphology in visible light.

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