The Milky Way Project Talk

Red Fuzzy Disks

  • greginak by greginak

    In this pic http://talk.milkywayproject.org/objects/AMW0000xdp there is a well defined red fuzzy disk. I've seen some others like this as in the low center area of the pic that are small red dots. What could this be? A planetary nebula? Something else

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  • ttfnrob by ttfnrob admin, scientist

    It could be a planetary nebula (there is another mentioned in this blog post: http://blogs.zooniverse.org/mwp/2011/03/04/what-are-yellowballs/) or sometimes that sort of thing could be a deeply embedded, massive young protostar. Might be interesting to try and collect some of these together, maybe try to find a whole bunch of them?

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  • lpspieler by lpspieler

    I've found something similar in AMW0001257 and marked it as #reddisk.

    EDIT: I've only just seen that it's also marked as #redbubble (which seems more appropriate)
    As the object mentioned by greginak actually also looks somewhat like a bubble I've also marked it like that

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  • Feylin by Feylin

    Hey, I found one that seems like that too... but I'm not sure.
    Its a red disk/circle with a hole and a bright object in the middle. It doesn't look like a bubble/fuzzy red or anything we should tag. Here's the picture: http://s3.amazonaws.com/mwp-development/north/0.75x0.375_jpgs/GLM_35883+0031_mosaic_I24M1.jpg

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  • HeadAroundU by HeadAroundU

    http://talk.milkywayproject.org/objects/AMW00011hh I call it #redball

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  • suelaine by suelaine

    The note from Feylin talks about a red circle with a hole or bright star in the middle. That object is in the bottom right of the image and is partially obscured by the edge. At a later date a paper was written about that particular object by skendrew on the science team and it is very interesting and is called an LBV or luminous Blue Variable. look it up in blogs, I think. suelaine

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  • JungJoe by JungJoe

    Some of the most luminous stars have sporadic, violent mass-loss events whose causes are not understood. These evolved hot stars are called luminous blue variables (LBVs), and their instability may shape the appearance of the upper Hertzsprung-Russell (HR) diagram. LBV eruptions are interestingly reminiscent of geysers or even volcanos. They have received considerable observational attention since 1980, but theoretical work to explain the instability has been scarce. In a typical LBV eruption, the star's photosphere expands and the apparent temperature decreases to near 8000 K. During these normal eruptions the bolometric luminosity remains constant, as typified by S Doradus, AG Carinae, and R 127. A few LBV's, specifically Eta Carinae, P Cygni, V12 in NGC 2403, and SN 1961V, have giant eruptions in which the total luminosity actually increases by more than one or two magnitudes. The star may expel as much as a solar mass or more with a total luminous output rivaling a supernova. By Humphreys, Roberta M.; Davidson, Kris

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