Leo Triplet


Leo Triplet
Leo Triplet
LeoTripletHunterWilson.jpg
The Leo Triplet, with M65 (right top), M66 (right bottom) and
NGC 3628 (left). North is to the left.
Observation data (Epoch J2000)
Constellation(s) Leo
Right ascension 11h 17m[1][2]
Declination +13° 25′[1][2]
Number of galaxies 3-5[1][2][3]
Brightest member M66[1][2]
Other designations
M66 Group, Arp 317,[4] LGG 231,[1]
NOGG P1 533,[2] NOGG P2 543[2]
See also: Galaxy groups and clusters, List of galaxy clusters
v · d · e

The Leo Triplet (also known as the M66 Group) is a small group of galaxies about 35 million light-years away[5] in the constellation Leo. This galaxy group consists of the spiral galaxies M65, the M66, and the NGC 3628.

Contents

Members

The table below lists galaxies that have been consistently identified as group members in the Nearby Galaxies Catalog,[3] the Lyons Groups of Galaxies (LGG) Catalog,[1] and the group lists created from the Nearby Optical Galaxy sample of Giuricin et al.[2]

Members of the Leo Triplet
Name Type[6] R.A. (J2000)[6] Dec. (J2000)[6] Redshift (km/s)[6] Apparent Magnitude[6]
M65 SAB(rs)a 11h 18m 56.0s +13° 05′ 32″ 807 ± 3 10.3
M66 SAB(s)b 11h 20m 15.0s +12° 59′ 30″ 727 ± 3 9.7
NGC 3628 SAb pec 11h 20m 17.0s +13° 35′ 23″ 843 ± 1 9.4

Additionally, some of the references cited above indicate that one or two other nearby galaxies may be group members. NGC 3593 is frequently but not consistently identified as a member of this group.

Nearby groups

The M96 Group is located physically near the Leo Triplet.[7] These two groups may actually be separate parts of a much larger group,[7] and some group identification algorithms actually identify the Leo Triplet as part of the M96 Group.[2][8]

Gallery

See also

External links

References

  1. ^ a b c d e f A. Garcia (1993). "General study of group membership. II - Determination of nearby groups". Astronomy and Astrophysics Supplement 100: 47–90. Bibcode 1993A&AS..100...47G. 
  2. ^ a b c d e f g h G. Giuricin, C. Marinoni, L. Ceriani, A. Pisani (2000). "Nearby Optical Galaxies: Selection of the Sample and Identification of Groups". Astrophysical Journal 543 (1): 178–194. arXiv:astro-ph/0001140. Bibcode 2000ApJ...543..178G. doi:10.1086/317070. 
  3. ^ a b R. B. Tully (1988). Nearby Galaxies Catalog. Cambridge: Cambridge University Press. ISBN 0-521-35299-1. 
  4. ^ H. Arp (1966). "Atlas of Peculiar Galaxies". Astrophysical Journal Supplement 14: 1–20. Bibcode 1966ApJS...14....1A. doi:10.1086/190147. 
  5. ^ VST Looks at the Leo Triplet — and Beyond
  6. ^ a b c d e "NASA/IPAC Extragalactic Database". Results for various galaxies. http://nedwww.ipac.caltech.edu/. Retrieved 2006-10-24. 
  7. ^ a b L. Ferrarese, H. C. Ford, J. Huchra, R. C. Kennicutt Jr., J. R. Mould, S. Sakai, W. L. Freedman, P. B. Stetson, B. F. Madore, B. K. Gibson, J. A. Graham, S. M. Hughes, G. D. Illingworth, D. D. Kelson, L. Macri, K. Sebo, N. A. Silbermann (2000). "A Database of Cepheid Distance Moduli and Tip of the Red Giant Branch, Globular Cluster Luminosity Function, Planetary Nebula Luminosity Function, and Surface Brightness Fluctuation Data Useful for Distance Determinations". Astrophysical Journal Supplement 128 (2): 431–459. arXiv:astro-ph/9910501. Bibcode 2000ApJS..128..431F. doi:10.1086/313391. 
  8. ^ 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. Bibcode 1992A&AS...93..211F. 
  9. ^ "VST Looks at the Leo Triplet — and Beyond". ESO Photo Release. http://www.eso.org/public/news/eso1126/. Retrieved 27 July 2011. 

Coordinates: Sky map 11h 17m 00s, +13° 25′ 00″


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • In the leo triplet — Este artículo está huérfano, pues pocos o ningún artículo enlazan aquí. Por favor, introduce enlaces hacia esta página desde otros artículos relacionados …   Wikipedia Español

  • Triplet du Lion — Pour les articles homonymes, voir Lion (homonymie). Triplet du Lion Le triplet du Lion, avec M65 (en haut à droite), M66 (en bas à droite) et NGC 3628 (gauche). Sur cette photographie, le Nord pointe vers le coin supérieur ga …   Wikipédia en Français

  • Leo (constellation) — Infobox Constellation name = Leo abbreviation = Leo genitive = Leonis symbology = the Lion RA = 11 dec= +15 areatotal = 947 arearank = 12th numbermainstars = 9, 15 numberbfstars = 92 numberstarsplanets = 7 numberbrightstars = 3 numbernearbystars …   Wikipedia

  • Leo-I-Gruppe — Die beiden Spiralgalaxien M 95 und M96 bilden den Kern der M96 Untergruppe Die Leo I Gruppe, auch M66/M96 Gruppe, ist eine Galaxiengruppe in einer Entfernung von etwa 35 Mio. Lichtjahren. Wie die Lokale Gruppe und andere benachbarte… …   Deutsch Wikipedia

  • Groupe Leo I — Groupe de M96 Groupe de M96 …   Wikipédia en Français

  • Messier 65 — M65 by Hubble Space Telescope; 2.5′ view Credit: NASA/STScI/WikiSky Observation data Epoch J2000 Constellation …   Wikipedia

  • NGC 3628 — Credit:ESO Observation data (J2000 epoch) Constellation …   Wikipedia

  • M96 Group — Not to be confused with Leo Cluster or Leo Triplet. M96 Group M95 (left) and M96 (right). Credit:Scott Anttila. Observation data (Epoch J2000) …   Wikipedia

  • Messier 66 — M66 as observed with the Spitzer Space Telescope as part of the SINGS. The image is a four channel false color composite, where blue indicates emission at 3.6 micrometers, green corresponds to 4.5 micrometers, and red to 5.8 and 8.0 micrometers.… …   Wikipedia

  • Список объектов Мессье — Каталог Мессье (фр. Catalogue des Nébuleuses et des Amas d Étoiles, Каталог туманностей и звёздных скоплений) список из 110 астрономических объектов, составленный французским астрономом Шарлем Мессье и впервые опубликованный в… …   Википедия