Cetus II dwarf galaxy

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Galaxy
Cetus II dwarf galaxy
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Cetus 2
Photo-request.svg
AladinLite
Constellation whale
Position
equinox :  J2000.0 , epoch : J2000.0
Right ascension 01 h 17 m 52.8 s
declination -17 ° 25 ′ 12.0 ″
Appearance
Morphological type dSph  
Brightness  (visual) (17.38 ± 0.19) mag
Physical data
Affiliation Local group  
distance (97,800 ± 9,800) Lj /
(30.000 ± 3.000) pc
Absolute brightness (0.0 ± 0.68) mag
history
discovery Dark Energy Survey
Discovery date 2015
Catalog names
Cet II dSph

The Cetus II dwarf galaxy , also Cetus II or Cetus 2 for short , is a dwarf galaxy of the type dSph discovered in 2015 in the constellation Whale in the Local Group and one of the satellite galaxies of the Milky Way .

properties

Cet II dSph has a half-light radius of ′ , which corresponds to a size of (17 ± 7) pc at a distance of about 30 kpc  .  

additional

Web links

Commons : Constellation Whale  - 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 .