Holmberg IX

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Holmberg IX
Holmberg IX GALEX WikiSky.jpg
Holmberg IX Dwarf Galaxy on GALEX, 9′ view
Observation data (2000 epoch)
Right ascension09h 57m 32.1s [1]
Declination+69° 02′ 46″ [1]
Distance12 Mly
TypedI [1]
Apparent dimensions (V)1.41 ± 0.07 [1]
Apparent magnitude (V)16.5 [1]
Other designations
UGC 5336, [B93] 17, DDO 66, 2E 0953.7+6918, 2E 2199, 1ES 0953+69.3, HIJASS J0957+69A, Holmberg IX, [IW2001] H42, [IW2001] P63, K68 62, LEDA 28757, Mailyan 48, MCG+12-10-012, [MI94] Im 62, SPB 118, PGC 28757
See also: Galaxy, List of galaxies
 
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Holmberg IX
Holmberg IX GALEX WikiSky.jpg
Holmberg IX Dwarf Galaxy on GALEX, 9′ view
Observation data (2000 epoch)
Right ascension09h 57m 32.1s [1]
Declination+69° 02′ 46″ [1]
Distance12 Mly
TypedI [1]
Apparent dimensions (V)1.41 ± 0.07 [1]
Apparent magnitude (V)16.5 [1]
Other designations
UGC 5336, [B93] 17, DDO 66, 2E 0953.7+6918, 2E 2199, 1ES 0953+69.3, HIJASS J0957+69A, Holmberg IX, [IW2001] H42, [IW2001] P63, K68 62, LEDA 28757, Mailyan 48, MCG+12-10-012, [MI94] Im 62, SPB 118, PGC 28757
See also: Galaxy, List of galaxies

Holmberg IX is a dwarf irregular galaxy and a satellite galaxy of M81. The galaxy is named after Phillip Holmberg who first described it. Based on the observed age distribution of stars it contains it is thought to have formed within the last 200 Myr making it the youngest nearby galaxy.[2] It is also home to one of two newly discovered yellow supergiant eclipsing binary systems.[3][4]

Further reading[edit]

External links[edit]

References[edit]

  1. ^ a b c d e "SIMBAD: UGC 5336". 
  2. ^ Sabbi, E.; Gallagher, J. S.; Smith, L. J.; de Mello, D. F.; Mountain M. (March 2006). "Holmberg IX: The Nearest Young Galaxy". The Astrophysical Journal 676 (2): L113–L117. arXiv:0802.4446. Bibcode:2008ApJ...676L.113S. doi:10.1086/587548 . 
  3. ^ "Two new Star Systems are the First of Their kind Ever Found". 
  4. ^ "Two Yellow Supergiant Eclipsing Binary Systems Discovered: First Of Their Kind Ever Found". Science Daily. 2008-04-01. 

Coordinates: Sky map 09h 57m 32.1s, +69° 02′ 46″