M81 in Ursa Major (Jim Thommes)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: Bode's Galaxy · M 81 · NGC 3031

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M81 in Ursa Major

Link: http://www.jthommes.com/Astro/M81.htm

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M81 in Ursa Major

Link: http://www.jthommes.com/Astro/M81.htm

This field is M81 and the surrounding region. The irregular dwarf, UGC 5336, is left of M81 - it is a satellite of M81 and is thought to be the youngest nearby galaxy. M81 is an Active Galactic Nucleus (AGN) galaxy. It is well studied and cataloged. There are over 2,500 cataloged galactic objects within its confines in the SIMBAD database - many are listed as "unknown" for object type. The annotated image shows the brightest globular cluster and brightest HII region. There are several distant background galaxies in this field as well. The two bright stars below and to the right of M81 are really both double stars. BD+69 541A,B are an obvious double and are resolved in the image at about 9.55 arc seconds separation. These are likely a pair since they are also high proper motion stars with very similar velocity vectors. The other double is HD 85458A,B and is unresolved in the image. Their separation is less than a one arc second These galaxies and stars are identified in the annotated image.

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M81 in Ursa Major

M81 in Ursa Major

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M81 in Ursa Major

M81 in Ursa Major

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