Astronomy:NGC 2672
| NGC 2672 | |
|---|---|
 NGC 2672 (center) and NGC 2673 (left) imaged by SDSS | |
| Observation data (J2000 epoch) | |
| Constellation | Cancer |
| Right ascension | 08h 49m 21.8884s[1] |
| Declination | +19° 04′ 29.947″[1] |
| Redshift | 0.014487[1] |
| Helio radial velocity | 4,343±10 km/s[1] |
| Distance | 221.8 ± 15.6 Mly (68.01 ± 4.77 Mpc)[1] |
| Group or cluster | Arp 167 |
| Apparent magnitude (V) | 11.7[1] |
| Characteristics | |
| Type | E1-2[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[1] | |
NGC 2672 is a elliptical galaxy in the constellation of Cancer. Its velocity with respect to the cosmic microwave background is 4,611±21 km/s, which corresponds to a Hubble distance of 221.8 ± 15.6 Mly (68.01 ± 4.77 Mpc).[1] Additionally, 11 non-redshift measurements give a closer distance of 188.93 ± 19.72 Mly (57.927 ± 6.045 Mpc).[2] It was discovered by German-British astronomer William Herschel on 14 March 1784.[3]
The SIMBAD database lists NGC 2672 as an Active 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 galaxy NGC 2673 as Holm 99 in Erik Holmberg's A Study of Double and Multiple Galaxies Together with Inquiries into some General Metagalactic Problems, published in 1937.[5] These two galaxies are also listed in Halton Arp's Atlas of Peculiar Galaxies as Arp 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]
Supernovae
Two supernovae have been observed in NGC 2672:
- SN 1938B (type unknown, mag. 15.5) was discovered by Arno Wachmann in 1938.[8]
- SN 2025yla (Type Ia-91bg-like, mag. 15.5) was discovered by the Zwicky Transient Facility on 18 January 2025.[9]
Other observations
On 29 January 1953 it was occulted by the Moon during a Total Lunar Eclipse (the January 1953 lunar eclipse) over the South Atlantic and extreme south of Africa.[10]: 160
See also
References
- ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 "Results for object NGC 2672". NASA and Caltech. https://ned.ipac.caltech.edu/byname?objname=NGC+2672.
- ↑ "Distance Results for NGC 2672". NASA. https://ned.ipac.caltech.edu/cgi-bin/nDistance?name=NGC+2672.
- ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 2672". https://cseligman.com/text/atlas/ngc26a.htm#2672.
- ↑ "NGC 2672". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+2672.
- ↑ 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.
- ↑ Arp, Halton (1966). "Atlas of Peculiar Galaxies". The Astrophysical Journal Supplement Series 14: 1. doi:10.1086/190147. Bibcode: 1966ApJS...14....1A.
- ↑ 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. doi:10.1086/167041. Bibcode: 1989ApJ...336..655B.
- ↑ "SN 1938B". IAU. https://www.wis-tns.org/object/1938B.
- ↑ "SN 2025yla". IAU. https://www.wis-tns.org/object/2025yla.
- ↑ Meeus, Jan (2002). "Occultations of deep-sky objects during a total lunar eclipse". More Mathematical Astronomy Morsels. Willmann-Bell. pp. 157–162. ISBN 0943396743. https://falakmu.id/khgt/dokumen/More%20mathematical%20astronomy%20morsels%20(Jean%20Meeus)%20(Z-Library).pdf.
External links
- NGC 2672 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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