NGC 7090
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| NGC 7090 | |
|---|---|
 NGC 7090 image from the Hubble Space Telescope combines orange light (colored blue here), infrared (colored red) and emissions from glowing hydrogen gas (also in red)[1][2] | |
| Observation data (J2000 epoch) | |
| Constellation | Indus |
| Right ascension | 21h 36m 28.865s[3] |
| Declination | −54° 33′ 26.35″[3] |
| Redshift | 0.002859±0.000020[4] |
| Heliocentric radial velocity | 846 km/s[5] |
| Distance | 31.0 Mly (9.5 Mpc)[6] |
| Apparent magnitude (V) | 10.51[7] |
| Characteristics | |
| Type | Scd[8] |
| Mass | Stellar: 5.47×109[6] M☉ |
| Other designations | |
| IRAS 21329-5446, 2MASX J21362886-5433263, NGC 7090, LEDA 67045[7] | |
NGC 7090 is a spiral galaxy[8] in the southern constellation of Indus located about 31 million light-years away.[6] English astronomer John Herschel first observed this galaxy on 4 October 1834.[1][2]
The morphological class of NGC 7090 is Scd,[8] indicating it is a spiral with loosely-wound and somewhat disorganized arms. The galactic plane is inclined at an angle of 89° to the line of sight from the Earth,[8] giving it an edge-on view. The combined mass of the stars in this galaxy is 5.5 billion times the mass of the Sun (M☉), while the star formation rate is ~0.5 M☉·yr−1.[6] As a result of star formation, the diffuse ionized gas in the galaxy has a complex organization, showing filaments, bubbles, and super-shells.[9]
Three transient ultraluminous X-ray sources have been detected in NGC 7090.[10][11]
