NGC 1404

Elliptical galaxy in the Fornax Cluster From Wikipedia, the free encyclopedia

NGC 1404 is an elliptical galaxy in the Southern constellation Eridanus. It was discovered on November 28, 1837, by the astronomer John Herschel.[5] Based on the tip of the red-giant branch distance indicator, it lies at a distance of approximately 60 million light-years from the Milky Way.[3] It is one of the brightest members of the Fornax Cluster.[6][7]

Right ascension03h 38m 51.917s[1]
Declination−35° 35 39.81[1]
Redshift0.006498[2]
Quick facts Observation data (J2000 epoch), Constellation ...
NGC 1404
NGC 1404 imaged by the Very Large Telescope
Observation data (J2000 epoch)
ConstellationEridanus
Right ascension03h 38m 51.917s[1]
Declination−35° 35 39.81[1]
Redshift0.006498[2]
Heliocentric radial velocity1942 ± 48 km/s[2]
Distance61 Mly (18.7 Mpc)[3]
Apparent magnitude (V)10.00[4]
Apparent magnitude (B)10.97[4]
Characteristics
TypeE1[4]
Apparent size (V)3.3 × 3.0[4]
Other designations
MCG -06-09-013, PGC 13433[2]
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Characteristics

As usual with most elliptical galaxies, NGC 1404 is rich in globular clusters, with a population of them that has been estimated to be around 725;[8] however it has been proposed it could have lost most of its globular clusters due to gravitational interactions with NGC 1399, the brightest galaxy of the Fornax Cluster.[9]

Studies using the X-ray telescope Chandra show how the ram-pressure stripping caused by the motion of NGC 1404 through Fornax' intracluster medium is stripping the galaxy of its hot gas,[10] leaving behind a large trail.[11]

Supernovae

Two supernovae have been observed in NGC 1404:

  • SN 2007on (Type Ia, mag. 14.9) was discovered by the TAROT collaboration on 5 November 2007.[12][13]
  • SN 2011iv (Type Ia, mag. 12.8) was discovered by Stuart Parker on 2 December 2011.[14][15]

References

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