Columba-I dwarf galaxy

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Galaxy
Columba-I dwarf galaxy
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Columba 1
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AladinLite
Constellation Dove
Position
equinoxJ2000.0 , epoch : J2000.0
Right ascension 05 h 31 m 26.4 s
declination -28 ° 01 ′ 48.0 ″
Appearance
Morphological type dSph  
Brightness  (visual) (16.8 ± 0.17) mag
Physical data
Affiliation Local group  
distance (593,000 ± 59,000) Lj /
(182,000 ± 18,000) pc
Absolute brightness (−4.5 ± 0.17) mag
history
discovery Dark Energy Survey
Discovery date 2015
Catalog names
Col I dSph

The Columba I dwarf galaxy , also Columba I or Columba 1 for short , is a dwarf galaxy of the type dSph discovered in 2015 in the constellation Dove in the Local Group and one of the satellite galaxies of the Milky Way .

properties

Col I dSph has a half-light radius of , which corresponds to a size of (103 ± 25) pc at a distance of about 182 kpc  .  

additional

Web links

Commons : Constellation Dove  - Collection of images, videos and audio files

Individual evidence

  1. ^ NED
  2. A. Drlica Wagner: Eight ultra-faint galaxy candidates discovered in Year Two of the Dark Energy Survey . In: The Astrophysical Journal . 813, No. 2, November 4, 2015, p. 109. doi : 10.1088 / 0004-637X / 813/2/109 .