Astronomy:NGC 3689
| NGC 3689 | |
|---|---|
 The intermediate spiral galaxy NGC 3689 | |
| Observation data (J2000 epoch) | |
| Constellation | Leo |
| Right ascension | 11h 28m 11.0446s[1] |
| Declination | +25° 39′ 39.943″[1] |
| Redshift | 0.009130[1] |
| Helio radial velocity | 2737 ± 1 km/s[1] |
| Distance | 146.7 ± 10.3 Mly (44.97 ± 3.16 Mpc)[1] |
| Apparent magnitude (V) | 12.3[1] |
| Characteristics | |
| Type | SAB(rs)c[1] |
| Size | ~69,100 ly (21.20 kpc) (estimated)[1] |
| Apparent size (V) | 1.7′ × 1.1′[1] |
| Other designations | |
| UGC 6467, MCG+04-27-037, PGC 35294[1] | |
NGC 3689 is an intermediate spiral galaxy in the constellation of Leo. Its velocity with respect to the cosmic microwave background is 3049 ± 22 km/s, which corresponds to a Hubble distance of 44.97 ± 3.16 Mpc (~147 million light-years).[1] However, 16 non-redshift measurements give a closer distance of 39.350 ± 2.088 Mpc (~128 million light-years).[1] The galaxy was discovered by German-British astronomer William Herschel on 6 April 1785.[2]
The SIMBAD database lists NGC 3689 as a radio galaxy.[3][4]
The SAGA Astronomical Survey for the search for satellite galaxies orbiting another galaxy confirmed the presence of two satellite galaxies for NGC 3689.[5]
One calcium-rich supernova has been observed in NGC 3689: AT 2024mxe (type Gap, mag. 17.7) was discovered by GOTO on 26 June 2024.[6]
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 1.11 "Results for object NGC 3689". NASA and Caltech. https://ned.ipac.caltech.edu/byname?objname=NGC+3689.
- ↑ Seligman, Courtney. "Celestial Atlas Entry for NGC 3689". https://cseligman.com/text/atlas/ngc36a.htm#3689.
- ↑ "NGC 3689". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+3689.
- ↑ Miller, Neal A.; Owen, Frazer N. (2001). "The Radio Galaxy Populations of Nearby Northern Abell Clusters". The Astrophysical Journal Supplement Series 134 (2): 355–384. doi:10.1086/320857. Bibcode: 2001ApJS..134..355M.
- ↑ Mao, Yao-Yuan; Geha, Marla; Wechsler, Risa H.; Weiner, Benjamin; Tollerud, Erik J.; Nadler, Ethan O.; Kallivayalil, Nitya (2021). "The SAGA Survey. II. Building a Statistical Sample of Satellite Systems around Milky Way–like Galaxies". The Astrophysical Journal 907 (2): 85. doi:10.3847/1538-4357/abce58. Bibcode: 2021ApJ...907...85M.
- ↑ "Transient Name Server". Entry for AT 2024mxe. https://www.wis-tns.org/object/2024mxe.
External links
- NGC 3689 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
 |  |
