Author Topic: Irregular Checking Examples  (Read 38566 times)

Alice

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Re: Irregular Checking Examples
« Reply #30 on: October 05, 2008, 04:11:38 pm »
Take the double clump (one above the other) at the very top. Is that a star-forming clump, although it's the same colour as the rest of the galaxy? I can see 3 very bright star forming regions in the galaxy, but I have a suspicion that there are many and am stumped :(

waveney

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Re: Irregular Checking Examples
« Reply #31 on: October 05, 2008, 04:22:54 pm »
Choose between 11-20 and 20+, precision is not essential, remember in traditional zoo style it will be the combined estimates of 20 people that will be used.
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Half65

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Re: Irregular Checking Examples
« Reply #32 on: October 05, 2008, 05:56:46 pm »
Thanks for remember my guru.
I made a few mistakes in the beginning with all that buttons and radio buttons.  :D

Thomas J

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Re: Irregular Checking Examples
« Reply #33 on: October 05, 2008, 11:07:21 pm »
If I see a neat blue compact galaxy/dwarf galaxy, should I classify as irregular or not irregular, for this project?

Thanks
I am very interested in the Universe- I am specialising in the Universe and all that surrounds it.....            Peter Cook.


waveney

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Re: Irregular Checking Examples
« Reply #34 on: October 06, 2008, 10:53:07 am »
If I see a neat blue compact galaxy/dwarf galaxy, should I classify as irregular or not irregular, for this project?

Thanks

If it would be be classified as an Elliptical or Spiral then its not irregular.  Otherwise treat as irregular.  (I think)

Project Notes:

1) I will be adding a few more objects this evening.
2) 32 of you have clicked 6300 times on Irregulars so far


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Thomas J

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Re: Irregular Checking Examples
« Reply #35 on: October 06, 2008, 07:04:32 pm »
If I see a neat blue compact galaxy/dwarf galaxy, should I classify as irregular or not irregular, for this project?

Thanks

If it would be be classified as an Elliptical or Spiral then its not irregular.  Otherwise treat as irregular.  (I think)

Project Notes:

1) I will be adding a few more objects this evening.
2) 32 of you have clicked 6300 times on Irregulars so far



Ok, then. thanks Waveney. Keep up the good work :)
I am very interested in the Universe- I am specialising in the Universe and all that surrounds it.....            Peter Cook.


waveney

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Re: Irregular Checking Examples
« Reply #36 on: October 11, 2008, 06:29:17 am »
Irregular Checking - 1 week on.

44 of you have clicked 8,500 times on irregulars.  The number of images we are looking at has grown to 3153 (Thanks Aida).

I have a back end program that will soon (probably when everything has 5 clicks) remove the non-irregulars from the analysis and combine cases that are multiple images for the same irregular.
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Alice

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Re: Irregular Checking Examples
« Reply #37 on: October 13, 2008, 02:02:31 pm »
Probably it's just me . . . But I think I am starting to see a pattern . . .

Possibly . . .

It seems that when the irregular has some spiral structure, that is more common when there is another galaxy nearby.

Could that simply mean that when a lot of matter is around, it may mean that there will be a spiral galaxy in a few billion years (this is my pet theory that irregular galaxies are often the youngest and if they get enough to eat they might become spirals later - I have no concrete evidence to substantiate this theory and am not expecting any of you to believe it, much less repeat it to other people).

The most likely thing is just that a) it's my eyes and b) I should be doing more irregulars than I am ;D

waveney

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Re: Irregular Checking Examples
« Reply #38 on: October 13, 2008, 02:13:06 pm »
I don't know - its one of the things we might find out.

Clicks are slowly accumulating, 9,900 so far.  As soon as every image reaches 5 clicks I will filter out many of the non-irregulars and multiple images for the same object and release the initial data.  (This does assume that clicks arrive faster than Aida finds more irregulars to add to the study).

Today there are 3,200 images in the analysis.

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waveney

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Re: Irregular Checking Examples
« Reply #39 on: October 13, 2008, 04:04:46 pm »
Some questions to those of you clicking on irregulars:

Are there any other questions or categories that could meaningfully be asked?

Are the options for the current questions appropriate?

Is there any you find a waste of time?

(I am not saying I will change anything, but I might)
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Alice

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Re: Irregular Checking Examples
« Reply #40 on: October 13, 2008, 04:17:22 pm »
I found I had completely forgotten for several dozen to say whether it was clear or fuzzy - sorry! :( :( :(

What about if there is more than one galaxy nearby, eg another irregular and an ordinary one, or several?

What about if there are any particularly bright star-forming clumps, or whether it seems to be particularly big and bright/small and dim generally? Or will SDSS tell us that bit automatically?

lehensuge

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Re: Irregular Checking Examples
« Reply #41 on: October 14, 2008, 07:07:14 pm »
Bonsoir everybody !
What answer can we give to this SDSS number ?
588015507675021351
A single part inside a perfect galaxy ?


Alice

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Re: Irregular Checking Examples
« Reply #42 on: October 14, 2008, 08:37:52 pm »
It's probably a bright star-forming region that caught the camera's attention; but in this case I'd classify the whole galaxy.

jules

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Re: Irregular Checking Examples
« Reply #43 on: October 14, 2008, 08:49:30 pm »
Some questions to those of you clicking on irregulars:

Are there any other questions or categories that could meaningfully be asked?

Are the options for the current questions appropriate?

Is there any you find a waste of time?

(I am not saying I will change anything, but I might)
Do you think both "arms" and "spiral structure" are necessary? I just can't decide! I've come across virtually none where I clicked only one of the options - it seems to me that they both tend to go together.

And I agree with Alice - I think a pattern is emerging. Star forming regions and spiral structure seem more common in galaxies with friends though there are definite exceptions of the odd lone irregular with many star forming regions.

michpet

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Re: Irregular Checking Examples
« Reply #44 on: October 14, 2008, 09:40:08 pm »
Some questions to those of you clicking on irregulars:

Are there any other questions or categories that could meaningfully be asked?

Are the options for the current questions appropriate?

Is there any you find a waste of time?

(I am not saying I will change anything, but I might)

--I'd support a change to "faint and/or fuzzy".  Some are one or the other, but not necessarily both.

--I like the option of separating out the arms/spiral structure features.  Some have arm-like projections that aren't spiral in shape (or may spiral in different directions)

--It may be helpful to have both the irregular and not irregular buttons at the bottom.  Sometimes I go through all the questions before deciding that it's not irregular, then have to go back up to the top to click the button.

Waveney, these are minor suggestions, and please don't feel any pressure to change things--you've done a great job.  I think it may be difficult to know what other questions or categories would be useful without knowing how the data will be used. 

Michelle