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Hi everyone,<br>
<br>
we will have a journal club this week, as usual on Wednesday at 3:30
in the MOB Theory Room. This week, Brian will present an
astrophysics paper on everyone's favourite lettered process with the
catchy title "The <i>r</i>-process Pattern of a Bright, Highly <i>r</i>-process-enhanced
Metal-poor Halo Star at [Fe/H] ~ −2"
(<a class="moz-txt-link-freetext" href="http://iopscience.iop.org/article/10.3847/2041-8213/aaa9b4/meta">http://iopscience.iop.org/article/10.3847/2041-8213/aaa9b4/meta</a> or
<a class="moz-txt-link-freetext" href="https://arxiv.org/abs/1801.07727">https://arxiv.org/abs/1801.07727</a>). He comments that you can skip the
tables.<br>
<br>
Questions:<br>
<br>
Why would we want to look for r-process patterns in “metal-poor”
stars?<br>
Why are the sample sizes of “r-1” and “r-2” stars so small?<br>
<span style="font-size: 12pt;">What is the significance of this star
not being C-enhanced?</span> <br>
<span style="font-size: 12pt;">What is meant by a “limited”
r-process and what can this observation tell us about it? </span>
<br>
<span style="font-size: 12pt;">How might this star influence our
understanding of the origin of r-II stars? </span> <br>
Is this surprising?<br>
<br>
Hope to see you there!<br>
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