Messier 109

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Galaxy
Messier 109
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SDSS recording
SDSS recording
AladinLite
Constellation Big Bear
Position
equinox :  J2000.0 , epoch : J2000.0
Right ascension 11 h 57 m 36.0 s
declination + 53 ° 22 ′ 28 ″
Appearance
Morphological type SB (rs) bc / LINER / HII  
Brightness  (visual) 9.8 likes
Brightness  (B-band) 10.6 mag
Angular expansion 7.5 ′ × 4.4 ′
Position angle 68 °
Surface brightness 13.4 mag / arcmin²
Physical data
Affiliation LGG 258  
Redshift 0.003496 ± 0.000004  
Radial velocity 1048 ± 1 km / s  
Stroke distance
v rad  / H 0 		(50 ± 4)  x  10 6  ly
(15.4 ± 1.1)  Mpc 
history
discovery Pierre Méchain
Discovery date March 12, 1781
Catalog names
M  109 • NGC  3992 • UGC  6937 • PGC  37617 • CGCG  269-23 • MCG  + 09-20-044 • IRAS  11549 + 5339 • 2MASX  J11573598 + 5322282 • GC  2635 • H  IV-61 • h  1030 •

Messier 109 = NGC 3992 is a bar-spiral galaxy of the Hubble type SBbc with the dimensions 7.5 '× 4.4' and the apparent magnitude of 9.8 mag in the constellation Great Bear .

history

Messier 109 was discovered on March 12, 1781 by the French astronomer Pierre Méchain . In 1783 Charles Messier cataloged it as the 109th object.

description

M109 is the brightest galaxy in the M109 group , a large cluster of galaxies in the constellation of the Great Bear that contains over 50 galaxies.

In March 1956, the 1956A supernova was the only one to be discovered in this galaxy to date. The supernova was of type Ia and appeared in the southeastern part of the galaxy with a maximum magnitude of 12.8 m to 12.3 m .

M109 has at least the three satellite galaxies UGC 6923 , UGC 6940 and UGC 6969 . The HI areas of M109 are evenly distributed with only a small extent beyond the disk; there is a hole in the gas distribution of the HI areas precisely in the region of the bar.

See also

Web links

Commons : Messier 109  - 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 3992
  3. ↑ Seligman
  4. ↑ RB Tully: Nearby Galaxies Catalog . Cambridge University Press , 1988, ISBN 0-521-35299-1 .
  5. ↑ P. Fouque, E. Gourgoulhon, P. Chamaraux, G. Paturel: Groups of galaxies within 80 Mpc. II - The catalog of groups and group members . In: Astronomy and Astrophysics Supplement . 93, 1992, pp. 211-233. bibcode : 1992A & AS ... 93..211F .
  6. ^ A. Garcia: General study of group membership. II - Determination of nearby groups . In: Astronomy and Astrophysics Supplement . 100, 1993, pp. 47-90. bibcode : 1993A & AS..100 ... 47G .
  7. ↑ G. Giuricin, C. Marinoni, L. Ceriani, A. Pisani: Nearby Optical Galaxies: Selection of the Sample and Identification of Groups . In: Astrophysical Journal . 543, No. 1, 2000, pp. 178-194. arxiv : astro-ph / 0001140 . bibcode : 2000ApJ ... 543..178G . doi : 10.1086 / 317070 .
  8. ↑ Roelof Bottema, Verheijen: Dark and luminous matter in the NGC 3992 group of galaxies . In: Astronomy and Astrophysics . 388, No. 3, 2002, p. 793. arxiv : astro-ph / 0204335 . bibcode : 2002A & A ... 388..793B . doi : 10.1051 / 0004-6361: 20020539 .