IC 1613

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Galaxy
IC 1613
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Image of the dwarf galaxy IC 1613 using the VST
Image of the dwarf galaxy IC 1613 using the VST
AladinLite
Constellation whale
Position
equinox :  J2000.0 , epoch : J2000.0
Right ascension 01 h 04 m 47.8 s
declination + 02 ° 07 ′ 04 ″
Appearance
Morphological type IB (s) m  
Brightness  (visual) 9.3 mag
Brightness  (B-band) 9.9 likes
Angular expansion 16.6 ′ × 14.9 ′
Position angle 50 °
Surface brightness 15.1 mag / arcmin²
Physical data
Affiliation Local group  
Redshift −0.000781 ± 0.000003  
Radial velocity −234 ± 1 km / s  
distance approx. 2.4 million  ly  
diameter 11,000 ly
history
discovery Max Wolf
Discovery date September 1906
Catalog names
IC  1613 • UGC  668 • PGC  3844 • CGCG  384-68 • MCG  + 00-03-70 • IRAS  01025 + 0153 • DDO 8

IC 1613 is an irregular dwarf galaxy of type IB (s) m in the constellation Cetus in the southern sky . It has an apparent magnitude of 9.3 mag and an angular dimension of 16.6 '× 14.9'. It is around 2.4 million light years away from the solar system and has a diameter of around 11,000 light years . The object is a member of the local group .

Most of the stars in IC 1613 are around 7 billion years old, but there are quite a few young stars as the GALEX image below shows. Among them are at least five population -II Cepheids and some RR Lyrae - variable .

UV absorption (GALEX, left)

The galaxy was discovered by the German astronomer Max Wolf in September 1906 .

Web links

Individual evidence

  1. ↑ a b c NASA / IPAC EXTRAGALACTIC DATABASE
  2. ↑ a b c d e f SEDS : IC 1613
  3. ↑ Seligman