NGC 4365

NGC 4365
Hubble Space Telescope image of NGC 4365
Observation data (J2000 epoch)
ConstellationVirgo
Right ascension12h 24m 28.228s[1]
Declination+07° 19′ 03.07″[1]
Redshift−0.00022[2]
Heliocentric radial velocity−66 km/s[2]
Distance74.4 Mly (22.80 Mpc)[3]
Apparent magnitude (B)11.5[2]
Characteristics
TypeE3[4]
Other designations
UGC 7488, MCG +01-32-048, PGC 40375[2]
The location of NGC 4365 (circled in blue)

NGC 4365 is an elliptical galaxy[5] located in the constellation Virgo. It was discovered by William Herschel on April 13, 1784.[6][7][8]

NGC 4365 is the central galaxy of W' cloud, a cloud of galaxies about 6 megaparsecs behind (further from us than) the Virgo supercluster.[9] NGC 4365 has a kinematically distinct, counter-rotating stellar core region, which provides strong evidence for the theory that elliptical galaxies grow through mergers.[10] The mean age of its stellar population is greater than 12 billion years, and it retains a triaxial structure that has remained largely unchanged for 12 billion years. Because supermassive black holes in the centers of galaxies tend to scatter stars into chaotic new orbits, the longevity of NGC 4365's triaxial structure and kinematically distinct stellar populations indicates that it cannot have a supermassive black hole with a mass greater than 3×109 M☉.[11]

There is a stream of globular clusters connecting NGC 4365 to the neighboring compact S0 galaxy NGC 4342. It appears that NGC 4365 is stripping globular clusters and stars from its neighbor via tidal interaction.[9]

  1. ^ a b Cite error: The named reference 2MASS was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Cosmicflows3 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference NED was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference eso was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference larsen was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference chandra was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference brodie was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference blom was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference surma was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference stat was invoked but never defined (see the help page).