Talk:Barnard's Loop
Latest comment: 3 months ago by Jmacwiki in topic Age and runaways: contradictions.
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Orion's cloak
editIs Barnard's Loop the same thing as Orion's cloak, named so by Cuwie et al. in 1979? Or is one a part of the other? --Neitram (talk) 07:56, 24 July 2020 (UTC)
- According to Cowie et al, Barnard's loop was part of it, but "Orion's cloak" never really caught on as a name, so this is a bit moot. PaddyLeahy (talk) 11:52, 30 August 2022 (UTC)
Age and runaways: contradictions.
editArticle gives a supernova 2 MY ago as the loop’s cause, with 3 specific stars (with WP links to their own articles) as runaways from the event. But those stars’ articles are not in close agreement. One says 5 MYa, one says 2.5 MYa, and at least one says the cause was a collision of a pair of multiple-star systems.
Is there a consensus on the story? If not, one or more of the articles needs to clarify that the cause is not known with certainty. Jmacwiki (talk) 01:30, 17 April 2022 (UTC)
- Article also says the SN explosion apparently ”created” the 3 runaway stars (or rather, created their status as runaways). But an SN can’t plausibly give a “kick” large enough to send 50(!) solar masses (what the stars’ own articles say) out at such speeds: the energy transfer is inefficient. To top it off, the reference for this is another encyclopedia, but one that doesn’t list a peer-reviewed or published expert source for the hypothesis. So we really have no reference at all for the reader. Jmacwiki (talk) 03:15, 21 February 2026 (UTC)