Skip to comments.Astronomy Picture of the Day -- Three Galaxies in Draco
Posted on 10/17/2013 4:24:19 PM PDT by SunkenCiv
Explanation: This intriguing trio of galaxies is sometimes called the Draco Group, located in the northern constellation of (you guessed it) Draco. From left to right are edge-on spiral NGC 5981, elliptical galaxy NGC 5982, and face-on spiral NGC 5985 -- all within this single telescopic field of view spanning a little more than half the width of the full moon. While the group is far too small to be a galaxy cluster and has not been catalogued as a compact group, these galaxies all do lie roughly 100 million light-years from planet Earth. On close examination with spectrographs, the bright core of the striking face-on spiral NGC 5985 shows prominent emission in specific wavelengths of light, prompting astronomers to classify it as a Seyfert, a type of active galaxy. Not as well known as other tight groupings of galaxies, the contrast in visual appearance makes this triplet an attractive subject for astrophotographers. This impressively deep exposure hints at faint, sharp-edged shells surrounding elliptical NGC 5982, evidence of past galactic mergers. It also reveals many even more distant background galaxies.
(Excerpt) Read more at asterisk.apod.com ...
[Credit & Copyright: Stephen Leshin]
“The Three Turners”
I’m real glad my cable company added the science channel to the line up. They do real science and lots of good space shows.
“Prompting astronomers to classify it as a Seyfert”.
“Dave, what prompted you to classify this as a Seyfert?”
“A bottle of vodka.”
Astronomers.....a quiet but happy group.
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.