Messier 109
Galaxy Messier 109 |
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SDSS recording | |
AladinLite | |
Constellation | Big Bear |
Position equinox : J2000.0 , epoch : J2000.0 |
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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
- Messier 109, SEDS Messier pages
- M109
- Spektrum .de: amateur recordings [1]
Individual evidence
- ↑ a b c d e NASA / IPAC EXTRAGALACTIC DATABASE
- ↑ a b c d e SEDS : NGC 3992
- ↑ Seligman
- ↑ RB Tully: Nearby Galaxies Catalog . Cambridge University Press , 1988, ISBN 0-521-35299-1 .
- ↑ 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 .
- ^ 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 .
- ↑ 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 .
- ↑ 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 .