NGC 3384 explained

NGC 3384
Constellation Name:	Leo^[1]
Epoch:	J2000
Type:	E7^[2]
Dist Ly:	35.1 ± 2.3 Mly (10.8 ± 0.7 Mpc)^[3]
Z:	704 ± 2 km/s
Appmag V:	10.9
Size V:	5′.5 × 2′.5
Names:	NGC 3371, UGC 5911, PGC 32292

NGC 3384 is an elliptical galaxy in the constellation Leo. The galaxy was discovered by William Herschel in 1784 as part of the Herschel 400 Catalogue. The high age of the stars in the central region of NGC 3384 was confirmed after analysis of their color. More than 80% were found to be Population II stars which are over a billion years old.^[4] The supermassive black hole at the core has a mass of .

Galaxy group information

NGC 3384 is a member of the M96 Group, a group of galaxies in the constellation Leo that is sometimes referred to as the Leo I Group. This group also includes the Messier objects M95, M96, and M105. All of these objects are conspicuously close to each other in the sky.^{[5] [6] [7] [8]}

External links

• NGC 3384, position and other data
• NGC 3384 SIMBAD entry
• Pdf document: Stellar population analysis applied to NGC 3384
• Wikisky.org: SDSS image, NGC 3384

Notes and References

1. Book: R. W. Sinnott . The Complete New General Catalogue and Index Catalogue of Nebulae and Star Clusters by J. L. E. Dreyer . 1988 . Sky Publishing Corporation and Cambridge University Press . 978-0-933346-51-2.
2. Web site: NASA/IPAC Extragalactic Database . Results for NGC 3384 . 2006-10-12.
3. Jensen, Joseph B. . 4 . Tonry, John L. . Barris, Brian J. . Thompson, Rodger I. . Liu, Michael C. . Rieke, Marcia J. . Ajhar, Edward A. . Blakeslee, John P. . Measuring Distances and Probing the Unresolved Stellar Populations of Galaxies Using Infrared Surface Brightness Fluctuations . Astrophysical Journal . February 2003 . 583 . 2 . 712–726 . 2003ApJ...583..712J . 10.1086/345430 . astro-ph/0210129 . 551714 .
4. Attia, Abdel-Fattah . 4 . Ismail, H. A. . Selim, I. M. . Osman, A. M. . Isaa, I. A. . Marie, M. A. . Shaker, A. A. . Stellar Population Analysis of Galaxies based on Genetic Algorithms . Chinese Journal of Astronomy and Astrophysics . August 2005 . 5 . 4 . 347–355 . 2005ChJAA...5..347A . 10.1088/1009-9271/5/4/002 .
5. Book: R. B. Tully . 1988 . Nearby Galaxies Catalog . Cambridge University Press . Cambridge . 978-0-521-35299-4.
6. P. Fouque . E. Gourgoulhon . P. Chamaraux . G. Paturel . Groups of galaxies within 80 Mpc. II – The catalogue of groups and group members . Astronomy and Astrophysics Supplement . 1992 . 93 . 211–233 . 1992A&AS...93..211F.
7. A. Garcia . General study of group membership. II – Determination of nearby groups . Astronomy and Astrophysics Supplement . 1993 . 100 . 47–90 . 1993A&AS..100...47G.
8. G. Giuricin . C. Marinoni . L. Ceriani . A. Pisani . Nearby Optical Galaxies: Selection of the Sample and Identification of Groups . Astrophysical Journal . 2000 . 543 . 1 . 178–194 . 2000ApJ...543..178G . 10.1086/317070. astro-ph/0001140 . 9618325 .