Astronomy:NGC 7090

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Short description: Spiral galaxy in the constellation Indus
NGC 7090
NGC 7090 spiral galaxy by Hubble Space Telescope.jpg
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)
ConstellationIndus
Right ascension 21h 36m 28.865s[3]
Declination−54° 33′ 26.35″[3]
Redshift0.002859±0.000020[4]
Helio radial velocity846 km/s[5]
Distance31.0 Mly (9.5 Mpc)[6]
Apparent magnitude (V)10.51[7]
Characteristics
TypeScd[8]
MassStellar: 5.47×109[6] M☉
Other designations
IRAS 21329-5446, NGC 7090[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]

Gallery

References

  1. ↑ 1.0 1.1 "Hubble Sees NGC 7090 — An actively star-forming galaxy". NASA. September 14, 2012. https://www.nasa.gov/mission_pages/hubble/science/ngc7090.html. 
  2. ↑ 2.0 2.1 "NGC 7090 — An actively star-forming galaxy". ESA/Hubble Picture of the Week. http://www.spacetelescope.org/images/potw1237a/. 
  3. ↑ 3.0 3.1 Skrutskie, Michael F. et al. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal 131 (2): 1163–1183. doi:10.1086/498708. ISSN 0004-6256. Bibcode: 2006AJ....131.1163S. 
  4. ↑ de Vaucouleurs, G. et al. (1991), Third reference catalogue of bright galaxies, 9, New York: Springer-Verlag 
  5. ↑ Tully, R. Brent et al. (August 3, 2016). "COSMICFLOWS-3". The Astronomical Journal 152 (2): 50. doi:10.3847/0004-6256/152/2/50. Bibcode: 2016AJ....152...50T. 
  6. ↑ 6.0 6.1 6.2 6.3 Lianou, S. et al. (November 2019). "Dust properties and star formation of approximately a thousand local galaxies". Astronomy & Astrophysics 631: 19. doi:10.1051/0004-6361/201834553. A38. Bibcode: 2019A&A...631A..38L. 
  7. ↑ 7.0 7.1 "NGC 7090". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+7090. 
  8. ↑ 8.0 8.1 8.2 8.3 Heesen, Volker et al. (May 2016). "Advective and diffusive cosmic ray transport in galactic haloes". Monthly Notices of the Royal Astronomical Society 458 (1): 332–353. doi:10.1093/mnras/stw360. Bibcode: 2016MNRAS.458..332H. 
  9. ↑ Rossa, J. et al. (September 2012). "The Morphological Diversity of DIG in Halos of Edge-on Spirals as Revealed by HST/ACS". in de Avillez, M.A.. The Role of the Disk-Halo Interaction in Galaxy Evolution: Outflow vs. Infall?. EAS Publication Series. 56. pp. 221–224. doi:10.1051/eas/1256035. Bibcode: 2012EAS....56..221R. 
  10. ↑ Liu, Zhu et al. (July 2019). "X-ray properties of two transient ULX candidates in galaxy NGC 7090". Monthly Notices of the Royal Astronomical Society 486 (4): 5709–5715. doi:10.1093/mnras/stz1194. Bibcode: 2019MNRAS.486.5709L. 
  11. ↑ Walton, D. J. et al. (February 2021). "A new transient ultraluminous X-ray source in NGC 7090". Monthly Notices of the Royal Astronomical Society 501 (1): 1002–1012. doi:10.1093/mnras/staa3666. Bibcode: 2021MNRAS.501.1002W. 

External links

Coordinates: Sky map 21h 36m 28.865s, −54° 33′ 26.35″




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