NGC 7090

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]

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]

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]

Gallery

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  NGC 7090 by Hubble Space Telescope
• 
  NGC 7090 (2MASS)