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Thread: AAS on Trappist-1

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    Default AAS on Trappist-1



    pikaia, helicon64, Solrian and 5 others like this.
    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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    bladekeeper (01-30-2018),Gabby76 (01-30-2018),helicon64 (01-30-2018),ic_1101 (01-30-2018),kanadalainen (01-30-2018),michael131313 (01-30-2018),pikaia (01-30-2018),sketrip (01-30-2018)

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    Default Re: AAS on Trappist-1

    Very interesting. It's surprising that it's not much bigger than Jupiter. I wonder what its diameter was before it switched on and became a star?
    Jim

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    Default Re: AAS on Trappist-1

    Quote Originally Posted by Solrian View Post
    Very interesting. It's surprising that it's not much bigger than Jupiter. I wonder what its diameter was before it switched on and became a star?
    As big as you like. The operative concept is the Hayashi track. In the H-R diagram it is the pre main sequence (pre switch on) track followed in a temperature luminosity graph. The hayashi track followed by a low mass star is a near vertical drop at roughly the same temperature.

    https://en.wikipedia.org/wiki/Hayash...ion_tracks.svg
    Solrian likes this.
    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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