NGC 5394 is a barred spiral galaxy located in the constellation Canes Venatici. Its speed relative to the cosmic microwave background is 3,639 ± 14 km/s, which corresponds to a Hubble distance of 53.7 ± 3.8 Mpc (∼175 million ly).[1] NGC 5394 was discovered by German-British astronomer William Herschel in 1787.
| NGC 5394 | |
|---|---|
 | |
| Observation data (J2000 epoch) | |
| Constellation | Canes Venatici |
| Right ascension | 13h 58m 33s |
| Declination | +37° 27’ 12” |
| Redshift | 0.011501 |
| Heliocentric radial velocity | 3,448 km/s |
| Distance | 175 Mly (53.67 Mpc) |
| Apparent magnitude (B) | 13.7 |
| Absolute magnitude (V) | 13.12 |
| Surface brightness | 23.78 mag/arcsec^2 |
| Characteristics | |
| Type | SBb |
| Size | 96,900 ly (29.7 kpc estimated) |
| Apparent size (V) | 1.9' x 1.3' |
| Other designations | |
| PGC 49739, UGC 8898, VV 48b, Arp 84, IRAS 13564+3741, MCG +06-31-033, CGCG 191-024 | |
The luminosity class of NGC 5394 is II and it has a broad HI line. It also contains regions of ionized hydrogen. It is also a Luminous Infrared Galaxy (LIRG).[1]
To date, one non-redshift-based measurement gives a distance of approximately 32,900 Mpc (∼107 million ly).[2] This value is far outside the Hubble distance values. Note that it is with the average value of independent measurements, when they exist, that the NASA/IPAC database calculates the diameter of a galaxy.
One supernova has been observed in NGC 5394: SN 2020aaxs (type Ib, mag. 17).[3]
Arp 84
editNGC 5394 and NGC 5395 are a pair of gravitationally interacting galaxies that appear in Halton Arp's Atlas of Peculiar Galaxies under the designation Arp 84.[4] Arp noted that NGC 5495 is a spiral with a high surface luminosity companion at the end of one of its arms.[4]
NGC 5395 group
editAccording to A.M. Garcia, NGC 5394 is part of a group of galaxies that has at least five members, the NGC 5395 group. The other galaxies are NGC 5341, NGC 5351, NGC 5395 and UGC 8806.[5]
See also
edit- NGC 646, another interacting galaxy with a similar shape
- List of NGC objects (5001–6000)
External links
editReferences
edit- ^ a b "By Name | NASA/IPAC Extragalactic Database". ned.ipac.caltech.edu. Retrieved 2024-07-24.
- ^ "NED Query Results for NGC 5393". ned.ipac.caltech.edu. Retrieved 2024-07-24.
- ^ Transient Name Server entry for SN 2020aaxs. Retrieved 23 July 2024.
- ^ a b Arp, Halton (1966-11-01). "Atlas of Peculiar Galaxies". The Astrophysical Journal Supplement Series. 14: 1. doi:10.1086/190147. ISSN 0067-0049.
- ^ Garcia, A. M. (1993-07-01). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series. 100: 47–90. ISSN 0365-0138.