NGC 7222
Large barred spiral galaxy in the constellation Aquarius
NGC 7222 is a large barred spiral galaxy with a ring structure, located in the constellation Aquarius. It is located 570 million light-years away from the Solar System and was discovered by German astronomer, Albert Marth on August 11, 1864.
NGC 7222 has a luminosity class of II and it has a broad H I line which contains regions of ionized hydrogen. NGC 7222 also has a surface brightness of 14.20 mag/am, which means it is considered a low surface brightness galaxy (LSB). LSBs are diffuse galaxies that have surface brightness one magnitude lower compared to the ambient night sky.
01Supernova
One supernova has been discovered in NGC 7222 so far: SN 2008dr.
SN 2008dr
SN 2008dr was discovered by a team of astronomers; J. Leja, D. Madison, W. Li, and A. V. Filippenko from University of California, Berkeley as part of Lick Observatory Supernova Search (LOSS). It had a magnitude of 16.8 and was located 1".3 west and 8".1 north of the nucleus. SN 2008dr was confirmed to be a Type Ia.
02Companion galaxy
NGC 7222 has a companion which is a spiral galaxy, PGC 68229, also known as CGCG 377-036. The galaxy is located west of NGC 7222 at close proximity and is 579 million light-years distant. It is possible both galaxies together make up a galactic pair.
Sources and credits
This article is adapted from the Wikipedia article “NGC 7222”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
Images, from Wikimedia Commons:
- NGC7222 - SDSS DR14.jpg by Sloan Digital Sky Survey, CC BY 4.0
- NGC 7222 pgc SDSS2.jpg by Donald Pelletier, CC0
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