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NGC 6753 is a massive unbarred spiral galaxy, seen almost exactly face-on, in the southern constellation of Pavo. It was discovered by the English astronomer John Herschel on July 5, 1836. The galaxy is located at a distance of 142 million light years from the Milky Way, and is receding with a heliocentric radial velocity of 3,140 km/s. It does not display any indications of a recent interaction with another galaxy or cluster.
The morphological class of NGC 6753 is (R)SA(r)b, indicating it is a spiral without an inner bar feature (SA), displaying outer (R) and inner (r) ring structures, and moderately wound spiral arms. It is being viewed nearly face-on with a galactic plane inclination by 30° to the line of sight from the Earth. The galaxy is flocculent in appearance with a prominent central region. The virial mass of the galaxy is ~1×10 M☉, while the stellar mass is 3.2×10 M☉. It has a star formation rate of 15.5 M☉·yr, which is confined to a radius of 15 kpc around the core. The most active region of star formation is the inner ring. It has a hot, X-ray luminous corona that extends out to a radius of 50 kpc.
Supernovae
Three supernovae have been discovered in NGC 6753:
SN 2000cj was discovered by Robert Evans on May 14, 2000. It was positioned against a spiral arm at an offset 35″ east and 19″ south of the galaxy nucleus. The spectrum showed this to be a type Ia supernova.
On May 13, 2005, type Ic supernovaeSN 2005cb was spotted by the Brazilian Supernovae Search team. It was offset 16″ west and 19″ north of the nucleus and reached a peak magnitude of 15.6.
The type II-P supernovaSN 2019mhm was discovered by the BOSS team on August 2, 2019. This transient was spotted close to maximum with a magnitude of 16.6, but showed no radio emission.
^ Streicher, Magda (October 2010). "Pavo - A Fanciful Bird". Monthly Notes of the Astronomical Society of South Africa. 69 (9 and 10): 183–189. Bibcode:2010MNSSA..69..183S.
Cacho, R.; et al. (May 2015). Cenarro, A. J.; et al. (eds.). Kinematical decomposition of stellar populations in disc galaxies. Highlights of Spanish Astrophysics VIII, Proceedings of the XI Scientific Meeting of the Spanish Astronomical Society held on September 8–12, 2014, in Teruel, Spain. pp. 154–159. Bibcode:2015hsa8.conf..154C. ISBN978-84-606-8760-3.
Evans, R. O.; et al. (May 2000). Green, D. W. E. (ed.). "Supernova 2000cj in NGC 6753". IAU Circular. 7425 (1): 1. Bibcode:2000IAUC.7425....1E.
Suntzeff, N.; Kundu, A. (May 2000). Green, D. W. E. (ed.). "Supernova 2000cj in NGC 6753". IAU Circular. 7428 (2): 2. Bibcode:2000IAUC.7428....2S.
Turatto, M.; et al. (May 2005). Green, D. W. E. (ed.). "Supernovae 2005br, 2005bs, 2005cb". Central Bureau Electronic Telegrams. 156 (1): 1. Bibcode:2005CBET..156....1T.
Barbon, R.; et al. (2008). "Asiago Supernova Catalogue". CDS/ADC Collection of Electronic Catalogues. 1. Bibcode:2008yCat....1.2024B.
Kundu, Esha; Ryder, Stuart (August 2019). "Radio observations of SN 2019mhm". The Astronomer's Telegram. 13040 (13040): 1. Bibcode:2019ATel13040....1K.
"SN 2019mhm". Transient Name Server. Retrieved 2021-01-06.
NGC 6753 imaged by the Hubble Space Telescope
Media related to NGC 6753 at Wikimedia Commons
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