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 .
Supernova
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 .
Companion galaxy
NGC 7222 with PGC 68229 (left) 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.
References
"HyperLeda -object description" . atlas.obs-hp.fr . Retrieved 2024-05-06."NGC 7222" . spider.seds.org . Retrieved 2024-05-10.^ "Your NED Search Results" . ned.ipac.caltech.edu . Retrieved 2024-05-06.
^ "NGC Objects: NGC 7200 - 7249" . cseligman.com . Retrieved 2024-05-06.
"Data from revised NGC and IC catalogue by Wolfgang Steinicke, NGC 7200 to 7299" . astrovalleyfield.ca . Retrieved 2024-05-06.Leja, J.; Madison, D.; Li, W.; Filippenko, A. V. (2008-06-01). "Supernovae 2008ct, 2008dq, 2008dr, and 2008ds" . Central Bureau Electronic Telegrams . 1419 : 1. Bibcode :2008CBET.1419....1L .
"SN 2008dr" . w.astro.berkeley.edu . Retrieved 2024-05-06."Bright Supernovae - 2008" . www.rochesterastronomy.org . Retrieved 2024-05-06."SN 2008dr | Transient Name Server" . www.wis-tns.org . Retrieved 2024-05-06.González-Gaitán, S.; Hsiao, E. Y.; Pignata, G.; Förster, F.; Gutiérrez, C. P.; Bufano, F.; Galbany, L.; Folatelli, G.; Phillips, M. M.; Hamuy, M.; Anderson, J. P.; de Jaeger, T. (2014-10-23). "DEFINING PHOTOMETRIC PECULIAR TYPE Ia SUPERNOVAE" . The Astrophysical Journal . 795 (2): 142. arXiv :1409.4811 . Bibcode :2014ApJ...795..142G . doi :10.1088/0004-637x/795/2/142 . ISSN 1538-4357 .
"HyperLeda -object description for PGC 68229" . atlas.obs-hp.fr . Retrieved 2024-05-06."Your NED Search Results" . ned.ipac.caltech.edu . Retrieved 2024-05-06.
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Sloan Digital Sky Survey image of barred spiral galaxy NGC 7222
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