Need help classifying.
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by Sion1138
What's the threshold for the "edge on" classification?
Also, I'm a bit confused as to the bulges. What is an example of a galaxy with 'no bulge'?
Posted
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by dj_tjitso
Hi, this is an edgeon galaxy (with a nice dustlane):
This is not:
And this is just one example of a galaxy without a bulge (no visible core):
Of course, there's many more examples and it'll take a while before you're comfortable enough classifying every type of galaxy. But you're not the onlyone classifying, so it's no big deal if you make a mistake. If you're unsure you can always try a search for similar galaxies. For instance, if you want to know when a galaxy's irregular or not, search for #irregular and wathc if those results are similar to the galaxy you're classifying. There are also many helpful topics around.
Good luck.
Posted
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by Sion1138
Much appreciated.
Posted
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by dj_tjitso
You're welcome, and have fun.
Posted