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NGC 2672

Coordinates:Sky map08h 49m 21.8884s, +19° 04′ 29.947″
From Wikipedia, the free encyclopedia
Galaxy in the constellation Cancer

NGC 2672
NGC 2672 (center) and NGC 2673 (left) imaged bySDSS
Observation data (J2000epoch)
ConstellationCancer
Right ascension08h 49m 21.8884s[1]
Declination+19° 04′ 29.947″[1]
Redshift0.014487[1]
Heliocentric radial velocity4,343±10 km/s[1]
Distance221.8 ± 15.6 Mly (68.01 ± 4.77 Mpc)[1]
Group orclusterArp 167
Apparent magnitude (V)11.7[1]
Characteristics
TypeE1-2[1]
Size~162,200 ly (49.74 kpc) (estimated)[1]
Apparent size (V)3.0′ × 2.8′[1]
Other designations
HOLM 99A,Arp 167,UGC 4619,MCG +03-23-010,PGC 24790,CGCG 090-019 NED01,KPG 175A[1]

NGC 2672 is aelliptical galaxy in theconstellation ofCancer. Its velocity with respect to thecosmic microwave background is4,611±21 km/s, which corresponds to aHubble distance of 221.8 ± 15.6 Mly (68.01 ± 4.77 Mpc).[1] Additionally, 11non-redshift measurements give a distance of 188.93 ± 19.72 Mly (57.927 ± 6.045 Mpc).[2] It was discovered by German-British astronomerWilliam Herschel on 14 March 1784.[3]

TheSIMBAD database lists NGC 2672 as anActive Galaxy Nucleus Candidate, i.e. it has a compact region at the center of a galaxy that emits a significant amount of energy across the electromagnetic spectrum, with characteristics indicating that this luminosity is not produced by the stars.[4]

NGC 2672 is listed with the galaxyNGC 2673 asHolm 99 inErik Holmberg'sA Study of Double and Multiple Galaxies Together with Inquiries into some General Metagalactic Problems, published in 1937.[5] These two galaxies are also listed inHalton Arp'sAtlas of Peculiar Galaxies asArp 167, with the description "Comp. galaxy very condensed, has curved plume."[6] Another study indicates that the two galaxies are interacting and NGC 2673 has two tidal plumes, while NGC 2672 is only weakly disturbed.[7]

Observation

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Onesupernova has been observed in NGC 2672: SN 1938B (type unknown, mag. 15.5) was discovered byArno Wachmann in 1938.[8]

On 29 January 1953 it was occulted by theMoon during aTotal Lunar Eclipse (theJanuary 1953 lunar eclipse) over theSouth Atlantic and extreme south ofAfrica.[9]: 160 

See also

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References

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  1. ^abcdefghijk"Results for object NGC 2672".NASA/IPAC Extragalactic Database.NASA andCaltech. Retrieved19 December 2024.
  2. ^"Distance Results for NGC 2672".NASA/IPAC EXTRAGALACTIC DATABASE.NASA. Retrieved19 December 2024.
  3. ^Seligman, Courtney."New General Catalogue Objects: NGC 2672".Celestial Atlas. Retrieved19 December 2024.
  4. ^"NGC 2672".SIMBAD.Centre de données astronomiques de Strasbourg. Retrieved18 December 2024.
  5. ^Holmberg, Erik (1937). "A Study of Double and Multiple Galaxies Together with Inquiries into some General Metagalactic Problems".Annals of the Observatory of Lund.6: 1.Bibcode:1937AnLun...6....1H.
  6. ^Arp, Halton (1966). "Atlas of Peculiar Galaxies".The Astrophysical Journal Supplement Series.14: 1.Bibcode:1966ApJS...14....1A.doi:10.1086/190147.
  7. ^Balcells, Marc; Borne, Kirk D.; Hoessel, John G. (1989)."Interacting Binary Galaxies. VI. The Fast Encounter of NGC 2672 and NGC 2673 (Karachentsev 175, ARP 167)".The Astrophysical Journal.336: 655.Bibcode:1989ApJ...336..655B.doi:10.1086/167041.
  8. ^"SN 1938B".Transient Name Server.IAU. Retrieved19 December 2024.
  9. ^Meeus, Jan (2002). "Occultations of deep-sky objects during a total lunar eclipse".More Mathematical Astronomy Morsels(PDF). Willmann-Bell. pp. 157–162.ISBN 0943396743.

External links

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