NGC 6753

NGC 6753
NGC 6753 imaged by the Hubble Space Telescope[1]
Observation data (J2000 epoch)
ConstellationPavo
Right ascension19h 11m 23.635s[2]
Declination−57° 02′ 58.44″[2]
Redshift0.010421±0.000087[3]
Heliocentric radial velocity3,140 km/s[4]
Distance142 Mly (43.6 Mpc)[5]
Apparent magnitude (V)11.9[6]
Apparent magnitude (B)11.84[7]
Characteristics
Type(R)SA(r)b[8]
Mass~1013[5] M☉
Apparent size (V)2′.4 x 2′.1[6]
Other designations
NGC 6753, PGC 62870[7]

NGC 6753 is a massive[5] unbarred spiral galaxy,[5] seen almost exactly face-on, in the southern constellation of Pavo.[6] It was discovered by the English astronomer John Herschel on July 5, 1836.[9] The galaxy is located at a distance of 142 million light years from the Milky Way,[5] and is receding with a heliocentric radial velocity of 3,140 km/s.[4] It does not display any indications of a recent interaction with another galaxy or cluster.[5]

The morphological class of NGC 6753 is (R)SA(r)b,[8] 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.[5] The galaxy is flocculent in appearance with a prominent central region.[8] The virial mass of the galaxy is ~1×1013 M☉, while the stellar mass is 3.2×1011 M☉. It has a star formation rate of 15.5 M☉·yr−1, which is confined to a radius of 15 kpc around the core.[5] The most active region of star formation is the inner ring.[10] It has a hot, X-ray luminous corona[6] that extends out to a radius of 50 kpc.[5]

Three supernovae have been discovered in NGC 6753. Supernova 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.[11] The spectrum showed this to be a type Ia supernova.[12] On May 13, 2005, type Ic supernovae SN 2005cb was spotted by the Brazilian Supernovae Search team.[13] It was offset 16″ west and 19″ north of the nucleus and reached a peak magnitude of 15.6.[14] The type II-P supernova SN 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.[15][16]

  1. ^ Cite error: The named reference ST was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference Skrutskie_et_al_2006 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Corwin_Emerson_1982 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Tully_et_al_2016 was invoked but never defined (see the help page).
  5. ^ a b c d e f g h i Cite error: The named reference Bogdán_et_al_2017 was invoked but never defined (see the help page).
  6. ^ a b c d Cite error: The named reference Streicher2010 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference simbad was invoked but never defined (see the help page).
  8. ^ a b c Cite error: The named reference Seidel_et_al_2015 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference SciNews2017 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Cacho_et_al_2015 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Evans_et_al_2000 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Suntzeff_Kundu_2000 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference Turatto_et_al_2005 was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference Barbon_et_al_2008 was invoked but never defined (see the help page).
  15. ^ Cite error: The named reference Kundu_Ryder_2019 was invoked but never defined (see the help page).
  16. ^ Cite error: The named reference TNS was invoked but never defined (see the help page).