Messier 105

from Wikipedia, the free encyclopedia
Galaxy
Messier 105
{{{Card text}}}
Image taken by the Hubble Space Telescope of the elliptical galaxy Messier 105
Image taken by the Hubble Space Telescope of the elliptical galaxy Messier 105
AladinLite
Constellation lion
Position
equinox :  J2000.0 , epoch : J2000.0
Right ascension 10 h 47 m 49.6 s
declination + 12 ° 34 ′ 54 ″
Appearance
Morphological type E1 / LINER  
Brightness  (visual) 9.5 likes
Brightness  (B-band) 10.5 mag
Angular expansion 5.3 ′ × 4.8 ′
Position angle 71 °
Surface brightness 13.1 mag / arcmin²
Physical data
Affiliation Leo I group
LGG 217  
Redshift 0.003039 ± 0.000008  
Radial velocity (911 ± 2) km / s  
Stroke distance
v rad  / H 0 		(37 ± 3)  x  10 6  ly
(11.2 ± 0.8)  Mpc 
history
discovery Pierre Méchain
Discovery date March 24, 1781
Catalog names
M  105 • NGC  3379 • UGC  5902 • PGC  32256 • CGCG  066-018 • MCG  + 02-28-011 • 2MASX  J10474959 + 1234538 • GC  2203 • H  I 17 • h  757 •

Messier 105 (also known as NGC 3379 ) is a 9.5  mag bright elliptical galaxy with an area of ​​5.3 '× 4.8' in the constellation Leo . The galaxy is about 37 million light years from the solar system and belongs to the M96 group .

Annular structure around the center of M105

High-resolution images from the Hubble Space Telescope show a ring-shaped structure around the central black hole that is rotating rapidly. According to calculations, the mass of the black hole is around 200 million solar masses , the galaxy itself has a total mass of 100 billion solar masses.

The elliptical or lenticular galaxy NGC 3384 (= NGC 3371 ) in the immediate vicinity is a physical companion of M105. In contrast, the spiral galaxy NGC 3389 (= NGC 3373 ) , located seven arc minutes southeast of M105, is far in the background.

M105 was discovered on March 24, 1781 by the French astronomer Pierre Méchain . It was only added to the Messier catalog at a later date .

Web links

Commons : Messier 105  - album with pictures, videos and audio files

Individual evidence

  1. ↑ a b c d e NASA / IPAC EXTRAGALACTIC DATABASE
  2. ↑ a b c d e SEDS : NGC 3379
  3. ^ VizieR
  4. ↑ Massive Black Holes Dwell in Most Galaxies, According to Hubble Census , January 13, 1997
  5. ↑ Stars and Space March 2015 p. 60f
  6. ↑ see
  7. ↑ Seligman