Whirlpool Galaxy - M51 and Surrounding Field (Jim Thommes)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: IC 4263 · IC 4277 · M 51 · NGC 5194 · NGC 5195 · Whirlpool Galaxy

Whirlpool Galaxy - M51 and Surrounding Field

Link: https://jthommes.com/Astro/m51.htm

Whirlpool Galaxy - M51 and Surrounding Field

Link: https://jthommes.com/Astro/m51.htm

This image shows M51 (Arp 85) and its surrounding field. Arp 85 is an interacting galaxy pair consisting of NGC 5194 (Arp 85a) and NGC 5195 (Arp85b) as individual galaxies - Halton Arp classified this pair in the category of "spiral galaxies with large bright companion on arm". The pair is about 25 to 29 million light years distant from Earth. NGC 5195 is classed as "I0 pec"; NGC5194 is classed as "SA(s)bc pec".

Also in this image are background galaxies IC 4277, IC 4263, and IC 4278 ; the latter two are 131 and 241 million light years distant (respectively). There is the interesting galaxy cluster (XMXCS j132830.2+470357.2) which has a redshift of 0.3820 with a light travel time (Lookback) of 4.142 billion years. The field has multiple other background galaxies that can be seen in the full size image. The furthest objects visible in this image are the Quasars and their distances (by light travel time) range from 7.661 to 11.16 billion years (Lookback).

These objects, information, background galaxies, and some of the brighter stars are identified in the annotated image.

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Title: Whirlpool Galaxy - M51 Annotated

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Whirlpool Galaxy - M51 and Surrounding Field

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