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EntityQ1051359· pop 32· linked from 427 articles

galaxy

Key facts

Constellation
Hydra
Right ascension
09 23 30.205
Declination
−23 ° 09 ′ 41.37 ″
Distance
110 Mly (35 Mpc ) h , 0.73
Type
E3-4

via Wikipedia infobox

Wikidata facts

Constellation
Hydra
Distance from Earth
27.12
Image
NGC 2865 Hubble WikiSky.jpg
Show 11 more facts
Commons category
NGC 2865
catalog code
PRC C-29
time of discovery or invention
1835-00-00
discoverer or inventor
John Frederick William Herschel
redshift
0.008819
apparent magnitude
8.458
galaxy morphological type
E...
right ascension
140.8758542
declination
-23.1614917
radial velocity
2632
epoch
J2000.0

via Wikidata · CC0

~2 min read

Encyclopedic overview

NGC 2865 is an isolated elliptical galaxy in the equatorial constellation of Hydra. The core region of the galaxy shows a kinematically distinct component showing indications of a recent accretion or merger event that led to a burst of star formation around the nucleus. Observational constraints require this to have occurred within the last 100–400 million years, with the merger most likely being an Sb or Sc-class spiral galaxy.

NGC 2865 displays chaotic shell features that are likely the result of an interaction. These shells provide ~11–22% of the galaxy's total luminosity and are generally more blue (younger) than the main galaxy. There is a loop to the northwest and a tail to the southeast of the galaxy, with both being typical of galaxy merger events. Seven HII regions have been identified in the tidal tails, with associated populations of young stars. A ring of neutral hydrogen surrounds the galaxy.

Excerpted from Wikipedia’s “NGC 2865” article, available under the CC BY-SA 4.0 licence.