M81, M82 Mosiac (HaLRGB) (Jim Thommes)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: Bode's Galaxy · Cigar Galaxy · M 81 · M 82 · NGC 3031 · NGC 3034

M81, M82 Mosiac (HaLRGB)

Link: https://jthommes.com/Astro/M81-82Wide.htm

M81, M82 Mosiac (HaLRGB)

Link: https://jthommes.com/Astro/M81-82Wide.htm

M81 (SA(s)ab) is 11.8 million light years distant and M82 (I0 edge-on) is 12.1 million light years - M82 is also known as ARP 337. Five galaxies in this image have similar distances and radial velocities that put them into common groups (M81, M82, LEDA 28759, PGC 28529, and UGC 5336). Two groups contain all five as members ([TSK2008] 217 and [T2015] nest 101368). There are a number of background galaxies and quasars (or candidates) in this field as well. Many of these are small or faint and can only be seen in the full size image. The furthest quasar visible in this image is SDSS J095752.57+693227.6 - it has a redshift of 3.400 and a light travel time of 11.83 billion years (lookback). These objects and some of the brighter stars are identified in the annotated image. This is a 2 panel mosaic.

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Title: M81, M82 Annotated

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M81, M82 Mosiac (HaLRGB)

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