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Thread: What exactly is NGC2244?

  1. #1
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    Default What exactly is NGC2244?



    I've just been playing with the new version 12 of Stellarium.

    It describes NGC2244 as a "satellite cluster". I don't know what a satellite cluster is.

    Gathering what I can from Wikipaedia it appears this is a small group of stars "associated" with the nebulosity of the Rossette nebula.

    Do I assume that its very much the same type of object as the "Trapezium" within M42?
    Any comments folks?

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    Default Re: What exactly is NGC2244?

    Quote Originally Posted by Alec in France View Post
    I've just been playing with the new version 12 of Stellarium.

    It describes NGC2244 as a "satellite cluster". I don't know what a satellite cluster is.

    Gathering what I can from Wikipaedia it appears this is a small group of stars "associated" with the nebulosity of the Rossette nebula.

    Do I assume that its very much the same type of object as the "Trapezium" within M42?
    Any comments folks?
    I haven't heard the term "satellite cluster", but NGC2244 is regarded as having formed from the gas in the Rosette nebula, and so it is somewhat similar to the trapezium and other stars in M42.

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    Default Re: What exactly is NGC2244?

    If you break it up, satellite is something that revolves around another object; cluster, well, I'm sure we all know. So by guessing, I would say that it is a star cluster that revolves around a fixed point in the surrounding nebula.
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    Default Re: What exactly is NGC2244?

    Hello Alec,

    thanks for pointing to the satellite cluster in NGC 2244, here is the source of information:
    http://iopscience.iop.org/0004-637X/..._625_1_242.pdf

    Best,

    JG
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    Default Re: What exactly is NGC2244?

    NGC 2244 is an open cluster in Monoceros, and is synonymous with the Rosette Nebula - this object is both an emission nebula (the Rosette) and an open cluster.

    The object as a whole spans 23 arcminutes, and within the larger whole are NGC 2237, 2238, 2239, and NGC 2246.
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    Default Re: What exactly is NGC2244?

    Quote Originally Posted by j.gardavsky View Post
    Hello Alec,

    thanks for pointing to the satellite cluster in NGC 2244, here is the source of information:
    http://iopscience.iop.org/0004-637X/..._625_1_242.pdf

    Best,

    JG
    Hi JG,

    Thanks for the link. Much of the information there is too technical for me, but I read it through in its entirety.
    I'm glad I posed the original question, this is indeed a fascinating and complex area of our skies.
    I shall try to visit and understand this area more thoroughly.

    Kind regards.

    Alec.
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    Default Re: What exactly is NGC2244?

    Yes, Alec, it is. I also have not had expected an emerging cluster within this otherwise well known nebular complex.

    Best,

    JG
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