NGC 1325

NGC 1325
Hubble Space Telescope image of NGC 1325
Observation data (J2000 epoch)
ConstellationEridanus
Right ascension03h 25.576m [1]
Declination−21° 32′ 38.61″[1]
Heliocentric radial velocity1,588[2]
Distance75.0 Mly (23.01 Mpc)h−1
0.73[2]
Group or clusterEridanus cluster[3]
Apparent magnitude (V)11.5[4]
Characteristics
TypeSBbc[5]
Apparent size (V)4.47′ × 1.66′[5]
Notable featuresFlocculent spiral galaxy
Other designations
IRAS 03221-2143, NGC 1325, UGCA 70, PGC 12737, ESO 548-7, MCG -4-9-4[5]
References: [6]
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NGC 1325 is a flocculent spiral galaxy situated in the constellation of Eridanus. Located about 75 million light years away,[2] it is a member of the Eridanus cluster of galaxies,[3] a cluster of about 200 galaxies. It was discovered by William Herschel on 19 December 1799.

NGC 1325 has a Hubble classification of SBbc, which indicates it is a barred spiral galaxy with moderately wound arms.[5] Its angular size on the night sky is 4.5' x 1.7'.[5] The disk of the galaxy is inclined at an angle of 71° with the main axis aligned along a position angle of 232°.[3] The rotation curve for the galaxy is flat across much of the radius from the core.[7] The galaxy is moving away from the Milky Way with a heliocentric radial velocity of 1,588 km/s.[2]

A supernova was discovered in this galaxy on December 30, 1975 by Justus Dunlap and Y. Dunlap at Corralitos Observatory.[8] Designated SN 1975S with a magnitude of 14.6,[9] it was positioned 53″ east and 77″ north of the galactic nucleus. The color of this supernova and the rapid decline of the lightcurve suggest it was a type II supernova.[10]

A core-collapse supernova designated SN 2021yja was detected in this galaxy on September 8, 2021.[11] It was initially categorized as a type II, but may instead be a type Ic.[12]

  1. ^ a b Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference Tully_et_al_2016 was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference Angiras_et_al_2006 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference nightsky was invoked but never defined (see the help page).
  5. ^ a b c d e Cite error: The named reference Paturel_et_al_2003 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Mitchell_et_al_2018 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Dunlap1975 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference IAU_CBAT was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Wegner1977 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Smith_et_al_2021 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Ryder_et_al_2021 was invoked but never defined (see the help page).