NGC 7098 is a doubled barred spiral galaxy[2] located about 95 million light-years[3] away from Earth in the constellation of Octans.[4][5] NGC 7098 has an estimated diameter of 152,400 light-years.[4] NGC 7098 was discovered by astronomer John Herschel on September 22, 1835.[6]
| NGC 7098 | |
|---|---|
 NGC 7098 by the Very Large Telescope. | |
| Observation data (J2000 epoch) | |
| Constellation | Octans |
| Right ascension | 21h 44m 16.1s[1] |
| Declination | −75° 06′ 41″[1] |
| Redshift | 0.007942[1] |
| Heliocentric radial velocity | 2,381 km/s[1] |
| Distance | 95 Mly |
| Apparent magnitude (V) | 11.3[1] |
| Characteristics | |
| Type | (R)SAB(rs)a [1] |
| Size | ~152,400.64 ly (estimated)[1] |
| Apparent size (V) | 4' x 2.6'[1] |
| Other designations | |
| ESO 48-5, IRAS 21393-7520, PGC 67266[1] | |
NGC 7098 has a very prominent bar that is shaped like a broad oval with very prominent, nearly straight ansae. Surrounding the bar, an inner ring made of four tightly wrapped spiral arms is found. Located outside of the inner ring, a well-defined outer ring surrounding the inner region appears to have formed due to the wrapping of two spiral arms. It appears that both rings are being affected by new star formation. However, there is no star formation in the core of NGC 7098 as shown by the absence of dust lanes.[2]
See also
editReferences
edit- ^ a b c d e f g h i "NASA/IPAC Extragalactic Database". Results for NGC 7098. Retrieved 2017-06-12.
- ^ a b "NGC 7098 – (R1R2')SAB(rs)ab". The de Vaucouleurs Atlas of Galaxies. Archived from the original on 2018-10-11. Retrieved 2017-06-28.
- ^ "Seeing double". www.eso.org. Retrieved 2017-07-24.
- ^ a b "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2017-06-13.
- ^ Rojas, Sebastián García. "Galaxy NGC 7098 – Galaxy in Octans Constellation · Deep Sky Objects Browser". DSO Browser. Archived from the original on 2017-08-08. Retrieved 2017-06-13.
- ^ "New General Catalog Objects: NGC 7050 – 7099". cseligman.com. Retrieved 2017-06-13.
External links
edit
- NGC 7098 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
- SIMBAD
- NGC 70-- Project
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