Messier 105

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**Messier 105**
Observation data: J2000 epoch
M105, as viewed by the HST; Credit: NASA/ESA
Constellation:	Leo
Right ascension:	10^h 47^m 49.6^s^[1]
Declination:	+12° 34′ 54″^[1]
Redshift:	911 ± 2 km/s^[1]
Distance:	34.5 ± 1.7 Mly (10.6 ± 0.5 Mpc)^[2]
Type:	E1^[1]
Apparent dimensions (V):	5′.4 × 4′.8^[1]
Apparent magnitude (V):	10.2^[1]
Notable features:
Other designations
NGC 3379,^[1] UGC 5902,^[1] PGC 32256^[1]
See also: Galaxy, List of galaxies

Messier 105 (also known as M105 and NGC 3379) is an elliptical galaxy in the constellation Leo. Messier 105 is known to have a supermassive black hole.

1 History
2 Galaxy group information
3 External links
4 References

[edit] History

Messier 105 was discovered by Pierre Méchain on 24 March 1781, just a few days after he discovered the nearby galaxies Messier 95 and Messier 96^[3]. This galaxy is one of several that were not originally included in the original Messier Catalogue compiled by Charles Messier. Messier 105 was included in the catalog only when Helen S. Hogg found a letter by Méchain describing Messier 105 and when the object described by Méchain was identified as a galaxy previously named NGC 3379^[3].

[edit] Galaxy group information

Messier 105 is one of several galaxies within the M96 Group, a group of galaxies in the constellation Leo. The group also includes the Messier objects M95 and M96.^[4]^[5]^[6]^[7]

[edit] External links

[edit] References

^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ NASA/IPAC Extragalactic Database. Results for M105. Retrieved on November 16, 2006.
^ J. L. Tonry, A. Dressler, J. P. Blakeslee, E. A. Ajhar, A. B. Fletcher, G. A. Luppino, M. R. Metzger, C. B. Moore (2001). "The SBF Survey of Galaxy Distances. IV. SBF Magnitudes, Colors, and Distances". Astrophysical Journal 546 (2): 681-693.
^ ^a ^b K. G. Jones (1991). Messier's Nebulae and Star Clusters, 2nd edition, Cambridge: Cambridge University Press. ISBN 0-521-37079-5.
^ R. B. Tully (1988). Nearby Galaxies Catalog. Cambridge: Cambridge University Press. ISBN 0-521-35299-1.
^ P. Fouque, E. Gourgoulhon, P. Chamaraux, G. Paturel (1992). "Groups of galaxies within 80 Mpc. II - The catalogue of groups and group members". Astronomy and Astrophysics Supplement 93: 211-233.
^ A. Garcia (1993). "General study of group membership. II - Determination of nearby groups". Astronomy and Astrophysics Supplement 100: 47-90.
^ G. Giuricin, C. Marinoni, L. Ceriani, A. Pisani (2000). "Nearby Optical Galaxies: Selection of the Sample and Identification of Groups". Astrophysical Journal 543: 178-194.