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Thread: a brown dwarf or stray planet?

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    Default a brown dwarf or stray planet?



    Past items italicized. Scopes: Refractors: Orion ST80 (mods for white light solar), SV ED80 f7, Orion and SW 80 and 120 ED, Orion ED80T, Orion 120 f8.3, Tasco 30x30, Edmund 40; Newtonians: AT 8”f4, OC 8”f6.3, Z12 f5, self made 6” f9, Orion 10" f4.7, Orion XX14i; Catadioptrics: VMC110L, Intes MK66, Orion 102 MakCas f12.7, Celestron 9.25 SCT and 9.25 Edge. EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, TV Nagler, ES100s, Edmund Orthoscopics, Baader Hyperions. Mounts: Orion Sirius EQG, Star Seeker III, Celestron CG5, Vixen Porta II, Orion Atlas, Losmandy G11

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    Default Re: a brown dwarf or stray planet?

    At 11-12 Times the mass of Jupiter that puts the projected mass for this particular brown dwarf in the region of ~1/90th-1/100th that of our dear Sol.

    Pretty sure that for differences in brown dwarf emission spectra, at least at a short logical inspection of the matter, it seems probable that one of the factors is definitely elemental composition of the mass. Similar to how metal rich stars present differently than metal poor stars.

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    Default Re: a brown dwarf or stray planet?

    Quote Originally Posted by Serne View Post
    At 11-12 Times the mass of Jupiter that puts the projected mass for this particular brown dwarf in the region of ~1/90th-1/100th that of our dear Sol.

    Pretty sure that for differences in brown dwarf emission spectra, at least at a short logical inspection of the matter, it seems probable that one of the factors is definitely elemental composition of the mass. Similar to how metal rich stars present differently than metal poor stars.
    Differences in opacity due can arise from modest differences in chemical composition so this is quite reasonable.
    chas53 and Solrian like this.
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    Default Re: a brown dwarf or stray planet?

    I forgot to write a passing thought.....

    Could objects like this have potential for originating life?
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    Default Re: a brown dwarf or stray planet?

    Quote Originally Posted by not_Fritz_Argelander View Post
    I forgot to write a passing thought.....

    Could objects like this have potential for originating life?
    Perhaps in the orbit of one. I am pretty sure the conditions inside a brown dwarf would be too thermally stressful for organic material to form and propagate. If life within one then perhaps something similar to the microbial lifeforms near thermal gas vents in the ocean.

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    Default Re: a brown dwarf or stray planet?

    Well, to clarify, I was looking over the Wikipedia entry on brown dwarfs and their spectral types.

    https://en.m.wikipedia.org/wiki/Brow...ectral_class_T

    Some brown dwarfs are late sectoral class M, then in decreasing temperature classes L, T and Y. By the time we are in spectral class Y we are down to the temperature of a warm room, 300 K = 27 C = 87 F.
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    Default Re: a brown dwarf or stray planet?

    Quote Originally Posted by not_Fritz_Argelander View Post

    Some brown dwarfs are late sectoral class M, then in decreasing temperature classes L, T and Y. By the time we are in spectral class Y we are down to the temperature of a warm room, 300 K = 27 C = 87 F.
    Would that be surface temperature?
    Jim

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    Default Re: a brown dwarf or stray planet?

    Are all brown doors powered by deuterium fusion?
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    Jim

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    Default Re: a brown dwarf or stray planet?

    Quote Originally Posted by Solrian View Post
    Are all brown doors powered by deuterium fusion?
    Only in the more gentrified shopping establishments...
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    Default Re: a brown dwarf or stray planet?

    Were the brown dwarfs in the Hobbit powered by deuterium fusion?
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