NGC 3754

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NGC 3754
NGC 3754.jpg
NGC 3754
Observation data (J2000 epoch)
Constellation Leo
Right ascension 11h 37m 54.921s
Declination +21d 59m 07.80s
Redshift 0.029952
Heliocentric radial velocity 8,979 km/s
Distance 447 Mly (137 Mpc)
Group or cluster Copeland Septet
Apparent magnitude  (V)14.3
Characteristics
Type SBc
Size58,000 ly
Other designations
PGC 36018, CGCG 127-012N, MCG +04-28-011, VV 282b, Copeland Septet NED07, 2MASS J1137549+2159080, SDSS J113754.92+215907.8, HCG 057D, NSA 112842, AGC 210537, NVSS J113754+215910, 2XMM J113755.0+215908, LEDA 36018

NGC 3754 is a small barred spiral galaxy [1] located in the constellation Leo. [2] It is located 447 million light-years away from the Solar System [3] and was discovered on April 5, 1874, by Ralph Copeland. [4]

The luminosity class of NGC 3754 is II [3] and it is listed as a LINER galaxy by SIMBAD, meaning, a nucleus presenting an emission spectrum characterized by broad lines of weak ionized atoms. [5]

Copeland Septet

Sloan Digital Sky Survey image of NGC 3754 above two members of the Copeland Septet NGC3753 - SDSS DR14.png
Sloan Digital Sky Survey image of NGC 3754 above two members of the Copeland Septet

NGC 3754 is a member of the Copeland Septet which is made up of 7 galaxies discovered by Copeland in 1874. [6] The other members of the group, are NGC 3745, NGC 3746, NGC 3748, NGC 3750, NGC 3751 and NGC 3753. [7]

Halton Arp noticed the 7 galaxies in an article published in 1966. [8] This group is designated as Arp 320 in which PGC 36010 is part of them. [9]

The 7 galaxies were also observed by Paul Hickson, in which he included them inside his article in 1982. [10] This group is known as Hickson 57, in which NGC 3754 is designated as HCG 57D. [11]

References

  1. ↑ "HyperLeda -object description". atlas.obs-hp.fr. Retrieved 2024-05-02.
  2. ↑ Astronomy, Go. "NGC 3754 | galaxy in Leo | NGC List | GO ASTRONOMY". Go-Astronomy.com. Retrieved 2024-05-02.
  3. 1 2 "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2024-05-02.
  4. ↑ "New General Catalog Objects: NGC 3750 - 3799". cseligman.com. Retrieved 2024-05-02.
  5. ↑ "NGC 3754 - LINER-type Active Galaxy Nucleus". simbad.u-strasbg.fr. Retrieved 2024-05-02.
  6. ↑ Bakich, Michael E. (2024-01-01). "Copeland's Septet". Astronomy Magazine. Retrieved 2024-05-02.
  7. ↑ "Copeland's Septet (Hickson Compact Group 57) – Constellation Guide". www.constellation-guide.com. Retrieved 2024-05-02.
  8. ↑ "NED Search Results for ARP 320". ned.ipac.caltech.edu. Retrieved 2024-05-02.
  9. ↑ "Copeland's Septet (Arp 320) - Astronomy Magazine - Interactive Star Charts, Planets, Meteors, Comets, Telescopes". cs.astronomy.com. Retrieved 2024-05-02.
  10. ↑ Hickson, P. (1982-04-01). "Systematic properties of compact groups of galaxies". The Astrophysical Journal. 255: 382–391. Bibcode:1982ApJ...255..382H. doi:10.1086/159838. ISSN   0004-637X.
  11. ↑ "Data for revised NGC and IC catalogue by Wolfgang Steinicke - NGC 3700 to 3799". astrovalleyfield.ca. Retrieved 2024-05-02.
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