Astronomy Picture of the Day
    


UGC 1810: Wildly Interacting Galaxy from Hubble
<< Yesterday 10.05.2017 Tomorrow >>
UGC 1810: Wildly Interacting Galaxy from Hubble
Credit & Copyright: Domingo Pestana
Explanation: What's happening to this spiral galaxy? Although details remain uncertain, it surely has to do with an ongoing battle with its smaller galactic neighbor. The featured galaxy is labelled UGC 1810 by itself, but together with its collisional partner is known as Arp 273. The overall shape of the UGC 1810 -- in particular its blue outer ring -- is likely a result of wild and violent gravitational interactions. This ring's blue color is caused by massive stars that are blue hot and have formed only in the past few million years. The inner galaxy appears older, redder, and threaded with cool filamentary dust. A few bright stars appear well in the foreground, unrelated to UGC 1810, while several galaxies are visible well in the background. Arp 273 lies about 300 million light years away toward the constellation of Andromeda. Quite likely, UGC 1810 will devour its galactic sidekick over the next billion years and settle into a classic spiral form.

Free Presentation: APOD Editor to speak in Prague on June 30

January
February
March
April
May
June
 < May 2017  >
Mo Tu We Th Fr Sa Su
1234567
891011121314
15161718192021
22232425262728
293031



Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Based on Astronomy Picture Of the Day

Publications with keywords: interacting galaxies
Publications with words: interacting galaxies
See also:
All publications on this topic >>