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NGC 2859

NGC 2859
NGC 2859 imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
ConstellationLeo Minor
Right ascension09h 24m 18.549s[1]
Declination+34° 30′ 48.16″[1]
Redshift1687 ± 8 km/s[2]
Distance82.8 Mly (25.4 Mpc)[3]
Apparent magnitude (V)11.8[2]
Characteristics
Type(R)SB(r)0+[4]
Apparent size (V)4′.3 × 3′.8[2]
Notable featuresDouble barred
Other designations
UGC 5001, PGC 26649[2]

NGC 2859 is a barred lenticular galaxy located some 83[3] million light years away in the constellation Leo Minor. The morphological classification is (R)SB(r)0+,[4] where the S0+ notation indicates a well-defined physical structure that is lacking in visible spiral arms. It has a strong bar (B) of the "ansae" type, which means it grows brighter or wider toward the tips. A faint, secondary bar is positioned at nearly a right angle to the main bar. These features are surrounded by a weak inner ring (r) that appears diffuse. The outer region of the galaxy hosts a prominent, detached ring (R) that includes a series of blue-hued knots along the eastern side.[4]

The central supermassive black hole is an estimated 105 million times the mass of the Sun. The nucleus is tentatively classified as a transition type T2:,[3] with no indication of activity.[5]

  1. ^ a b Cite error: The named reference ApJ131_1163 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference ned was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference MNRAS415_3_2158 was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference Buta2007 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference MNRAS431_3_2397 was invoked but never defined (see the help page).

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