text: 474,11,1323298445097054208,112053784,Kaley Brauer 💫,"new paper to kick off #supernovaember! 🎉🎉🎉 Where’d that gold in your jewelry come from? Many people think neutron stars 🤷‍♀️ but we’re here to say don’t discount collapsars (esp when talking about the oldest gold in the universe)! 💥 <LINK> paper in a picture: <LINK> blatantly stealing #supernovaember hashtag from @sanjanacurtis & @YoniAstro cause the timing was far too good @sanjanacurtis @alexanderpji @annafrebel @mrdrout hahah IKR everyone so quick to forget about CCSN, the disrespect 😪 @YoniAstro @sanjanacurtis you're not wrong, it's a big boom 🤷‍♀️ @AstroBarker @alexanderpji @annafrebel @mrdrout Called out by Twitter 😰😰 @expwnential @alexanderpji @annafrebel @mrdrout <LINK> also it’s a really rough time and gotta celebrate the little wins when they come, so here’s my family when we had a mini publication party! feat. my brother who doesn’t drink toasting with oreos 🥂 <LINK> @syndamn chocolate creme oreo! definitely good but for those wishing their oreo was more chocolatey, fudge covered classic is the superior choice @QuantumEmanuel @alexanderpji @annafrebel @mrdrout thanks Emanuel!!! 😊",http://arxiv.org/abs/2010.15837,"It is unclear if neutron star mergers can explain the observed r-process abundances of metal-poor stars. Collapsars, defined here as rotating massive stars whose collapse results in a rapidly accreting disk around a black hole that can launch jets, are a promising alternative. We find that we can produce a self-consistent model in which a population of collapsars with stochastic europium yields synthesizes all of the r-process material in metal-poor ([Fe/H] < -2.5) stars. Our model reproduces the observed scatter and evolution of scatter of [Eu/Fe] abundances. We find that if collapsars are the dominant r-process site for metal-poor stars, r-process synthesis may be linked to supernovae that produce long gamma-ray bursts. Our results also allow for the possibility that core-collapse supernovae beyond those that launch gamma-ray bursts also produce r-process material (e.g., potentially a subset of Type Ic-BL supernovae). Furthermore, we identify collapsar jet properties (isotropic energy, engine luminosity, or engine time) which may trace r-process yield and verify that the amount of r-process yield produced per collapsar in our model (~0.07 Msun) is consistent with other independent estimates. In the future, achieving 0.05 dex precision on distribution scatter or a reliable selection function would further constrain our probe of r-process production. Our model would also hold for another prompt r-process site with a power-law yield, and work is needed to determine if, for example, fast-merging neutron stars can also explain abundance scatter. ","Collapsar R-Process Yields Can Reproduce [Eu/Fe] Abundance Scatter in