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M 65

Spiral Galaxy M65 (NGC 3623), type Sa, in Leo

in the Leo Triplett

Right Ascension 11 : 18.9 (h:m)
Declination +13 : 05 (deg:m)
Distance 35000 (kly)
Visual Brightness 9.3 (mag)
Apparent Dimension 8x1.5 (arc min)

Discovered 1780 by Pierre Méchain.

M65, together with its neighbors M66 and NGC 3628, forms a most conspicuous triplet of galaxies, the Leo Triplett or M66 group, located at a distance of about 35 million light years.

Although it is close to and thus under the gravitational influence of its neighbors, M65 looks like a very "normal" Sa type spiral and seems to have felt little influence. It has a prominent central lense and tightly wound spiral arms, plus a prominent dust lane marking the facing edge. The luminous disk is dominated by a smooth old stellar population. Near the lane, some knots are visible, which, according to J.D. Wray, may be associated with star forming regions. The lane may hide regions of star formation usually associated with such features in spiral galaxies.

Our image of M65 was obtained by David Malin with the Anglo Australian Telescope; interested readers may obtain more detailed information on our image.

  • Historical Observations and Descriptions of M65
  • More images of M65
  • Amateur images of M65
  • More images of M65 and M66, sometimes including NGC 3628 (the whole Leo Triplett)

  • Multispectral Image Collection of M65, SIRTF Multiwavelength Messier Museum
  • SIMBAD Data of M65
  • NED Data of M65
  • Observing Reports for M65 (IAAC Netastrocatalog)

    Hartmut Frommert (spider@seds.org)
    Christine Kronberg (smil@lrz.uni-muenchen.de)

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    Last Modification: 9 Dec 1999, 22:58 MET