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Galaxy of the Fornax Cluster

NGC 1369

NGC 1369
All data from the card 12
Constellation
Eridanus (constellation)
Right ascension
03h 36m 45.2737s
Declination
−36° 15′ 22.660″
Redshift
0.004763
Heliocentric radial velocity
1428 km/s
Distance
64.2 ± 4.5 Mly (19.69 ± 1.38 Mpc)
Group or cluster
Fornax Cluster
Apparent magnitude (V)
13.74
Type
SB0/a(rs)
Mass
0.68×1010 (Stellar mass) /3.5×1010 (Total Mass) M☉
Size
~25,800 ly (7.91 kpc) (estimated)
Apparent size (V)
1.5 x 1.4

NGC 1369 is a barred lenticular galaxy located 59 million light years away in constellation of Eridanus. The galaxy was discovered by astronomer Julius Schmidt on January 19, 1865, and is a member of the Fornax Cluster. NGC 1369 is a host to a supermassive black hole with an estimated mass of 1.8 million solar masses.

Surrounding NGC 1369 is a population of a least 11 known globular clusters.

Physical characteristics

In the disk of NGC 1369, there are two bright, diffuse spiral arms which break of a relatively weak bar structure. These arms quickly fade in the diffuse outer disk. Despite the presence of spiral arms, the galaxy is very red which actually makes NGC 1369 a lenticular galaxy. Also, the galaxy is devoid of atomic and molecular gas, and does not show any indications of ionised-gas emission as a result of star formation. Observations in X-rays have shown that it is infalling in a transional region of the Fornax Cluster between the high and low-density regions of the cluster where the X-ray emission is still present. As a result, ram-pressure stripping would have acted to stop star formation once the galaxy entered into the cluster core, causing it to transion from a spiral galaxy to a lenticular galaxy.

Supernova

One supernova has been observed in NGC 1369: SN 1969A (type unknown, mag. 17) was discovered by Enrique Chavira on 8 January 1969.

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Text from Wikipedia, CC BY-SA 4.0 · Source article