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<div style="color:rgb(255,255,255); font-family:Helvetica; font-size:12px"><span style="color:rgb(0,0,0)"><span style="font-size:12pt; color:rgb(0,0,0); font-family:"Calibri Light","Helvetica Light",sans-serif">Dear all</span><span style="font-size:12pt; color:rgb(0,0,0); font-family:"Calibri Light","Helvetica Light",sans-serif">,</span></span></div>
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<div style="color:rgb(255,255,255); font-family:Helvetica; font-size:12px"><span style="color:rgb(0,0,0)"><span style="font-size:12pt; color:rgb(0,0,0); font-family:"Calibri Light","Helvetica Light",sans-serif"><span style="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">This
week we will have the OKC-EO seminar by </span><b><span style="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">Stan Barmentloo.</span></b><br>
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<div style="color:rgb(255,255,255); font-family:Helvetica; font-size:12px"><span style="color:rgb(0,0,0)"><span style="font-size:12pt; color:rgb(0,0,0); font-family:"Calibri Light","Helvetica Light",sans-serif"><span style="color: rgb(0, 0, 0); font-family: Slack-Lato, Slack-Fractions, appleLogo, sans-serif; font-size: 15px; font-variant-ligatures: common-ligatures; background-color: rgb(255, 255, 255);">When
and where: Thursday 27th, 13:15 in A5:1003</span><br style="box-sizing: inherit; color: rgb(209, 210, 211); font-family: Slack-Lato, Slack-Fractions, appleLogo, sans-serif; font-size: 15px; font-variant-ligatures: common-ligatures; background-color: rgb(34, 37, 41);">
<b data-stringify-type="bold" style="box-sizing: inherit; color: rgb(209, 210, 211); font-family: Slack-Lato, Slack-Fractions, appleLogo, sans-serif; font-size: 15px; font-variant-ligatures: common-ligatures; background-color: rgb(34, 37, 41);"><span style="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">Title:
The Mystery of the Missing Carbon: a detailed analysis of carbon emission in SESNe nebular spectra</span></b><br style="box-sizing: inherit; color: rgb(209, 210, 211); font-family: Slack-Lato, Slack-Fractions, appleLogo, sans-serif; font-size: 15px; font-variant-ligatures: common-ligatures; background-color: rgb(34, 37, 41);">
<b data-stringify-type="bold" style="box-sizing: inherit; color: rgb(209, 210, 211); font-family: Slack-Lato, Slack-Fractions, appleLogo, sans-serif; font-size: 15px; font-variant-ligatures: common-ligatures; background-color: rgb(34, 37, 41);"><span style="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">Abstract:</span></b><br style="box-sizing: inherit; color: rgb(209, 210, 211); font-family: Slack-Lato, Slack-Fractions, appleLogo, sans-serif; font-size: 15px; font-variant-ligatures: common-ligatures; background-color: rgb(34, 37, 41);">
<span style="color: rgb(0, 0, 0); font-family: Slack-Lato, Slack-Fractions, appleLogo, sans-serif; font-size: 15px; font-variant-ligatures: common-ligatures; background-color: rgb(255, 255, 255);">Carbon is one of the most abundant elements in the universe,
as well as the principal component for life as we know it. Galactic Chemical Evolution (GCE) models predict that carbon in the local universie originates primarily from processing in AGB stars and Core Collapse SNe (CCSNe). However, GCE models typically only
use stellar evolution modeling as inputs, and not observations of CCSNe themselves. In this work, we aim to constrain the carbon production in CCSNe, more specifically in Stripped Envelope SNe, by studying their nebular spectra. In the optical, carbon emission
can be anaylsed through the lines [C I] 8727, which is strongly blended with the Ca NIR triplet, and [C I] 9824, 9850, a doublet which lies in a spectral region with little coverage in nebular SESNe spectra. To study these lines, we use the SUMO code to create
non-LTE spectral models for SESNe in the nebular (> 150d) phase, based on state-of-the-art helium star progenitor models. Furthermore, we create a new Monte Carlo script capable of deblending the individual elemental contributions to the Ca NIR triplet complex
in SN spectra. Comparing carbon contributions in the spectral models to observations, we find that the spectral models strongly overproduce the carbon signatures. Potential explanations for this overproduction are discussed.</span><br>
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<span style="color:rgb(0,0,0)"><span style="font-size:12pt; color:rgb(0,0,0); font-family:"Calibri Light","Helvetica Light",sans-serif">Hope to see many of you there</span><span style="font-size:12pt; color:rgb(0,0,0); font-family:"Calibri Light","Helvetica Light",sans-serif">.</span></span></div>
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<span style="color:rgb(0,0,0)"><span style="font-size:12pt; color:rgb(0,0,0); font-family:"Calibri Light","Helvetica Light",sans-serif">Kind r</span><span style="font-size:12pt; color:rgb(0,0,0); font-family:"Calibri Light","Helvetica Light",sans-serif">egards,</span></span><br>
<span style="color:rgb(0,0,0); font-family:"Calibri Light","Helvetica Light",sans-serif; font-size:12pt"><span style="font-family:"Calibri Light","Helvetica Light",sans-serif; font-size:16px">Smaranika (on behalf of the organisers)</span><br>
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<font face="Calibri,Helvetica,sans-serif,Helvetica,EmojiFont,Apple Color Emoji,Segoe UI Emoji,NotoColorEmoji,Segoe UI Symbol,Android Emoji,EmojiSymbols" size="2"><span style="font-size:16px"><font face="Helvetica,serif,EmojiFont" size="1" color="#212121"><span style="font-size:12pt; color:rgb(0,0,0); font-family:"Calibri Light","Helvetica Light",sans-serif"><font face="Calibri,Helvetica,sans-serif,Helvetica,EmojiFont,Apple Color Emoji,Segoe UI Emoji,NotoColorEmoji,Segoe UI Symbol,Android Emoji,EmojiSymbols" size="2" style="font-family:Calibri,Helvetica,sans-serif,Helvetica,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols"><span style="font-size:16px"><font face="Helvetica,serif,EmojiFont" size="1" color="#212121"><span style="font-size:12pt; color:rgb(0,0,0); font-family:"Calibri Light","Helvetica Light",sans-serif">====================================</span></font></span></font><span style="font-size:12pt; font-family:"Calibri Light","Helvetica Light",sans-serif">===========================</span><br>
Dr. Smaranika Banerjee</span></font><font face="Helvetica,serif,EmojiFont" size="1" color="#212121"><span style="font-size:12pt; color:rgb(0,0,0); font-family:"Calibri Light","Helvetica Light",sans-serif"><br>
Astronomy Department, Stockholm University</span></font></span></font></div>
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<font face="Calibri,Helvetica,sans-serif,Helvetica,EmojiFont,Apple Color Emoji,Segoe UI Emoji,NotoColorEmoji,Segoe UI Symbol,Android Emoji,EmojiSymbols" size="2"><span style="font-size:16px"><font face="Helvetica,serif,EmojiFont" size="1" color="#212121"><span style="font-size:12px; color:rgb(0,0,0)"></span></font><font face="Helvetica,serif,EmojiFont" size="1" color="#212121"><span style="font-size:12px; color:rgb(0,0,0)"><font face="Helvetica,serif,EmojiFont" size="1" color="#212121"><span style="font-size:12pt; color:rgb(0,0,0); font-family:"Calibri Light","Helvetica Light",sans-serif">Email: </span></font><a target="_blank" rel="noopener noreferrer" id="LPNoLP" style="font-family:Calibri,Helvetica,sans-serif,Helvetica,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:16px"><font face="Helvetica,serif,EmojiFont" size="1"><span style="font-size:12px"></span></font></a><font face="Helvetica,serif,EmojiFont" size="1"><a href="mailto:smaranika.banerjee@astro.su.se" id="LPNoLP"><span style="color:rgb(0,0,0); font-size:12pt; font-family:"Calibri Light","Helvetica Light",sans-serif">smaranika.banerjee@astro.su.se</span></a></font><br>
<span style="font-size:12pt; color:rgb(0,0,0); font-family:"Calibri Light","Helvetica Light",sans-serif">Old </span><span style="font-size:12pt; color:rgb(0,0,0); font-family:"Calibri Light","Helvetica Light",sans-serif">email: </span></span></font><a target="_blank" rel="noopener noreferrer" id="LPNoLP"><font face="Helvetica,serif,EmojiFont" size="1"><span style="font-size:12px"></span></font></a><font face="Helvetica,serif,EmojiFont" size="1"><a href="mailto:smaranikab@astr.tohoku.ac.jp" id="LPNoLP"><span style="color:rgb(0,0,0); font-size:12pt; font-family:"Calibri Light","Helvetica Light",sans-serif">smaranikab@astr.tohoku.ac.jp</span></a></font></span></font></div>
<div style="font-size:16px; font-family:Calibri,Helvetica,sans-serif,Helvetica,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols">
<font face="Calibri,Helvetica,sans-serif,Helvetica,EmojiFont,Apple Color Emoji,Segoe UI Emoji,NotoColorEmoji,Segoe UI Symbol,Android Emoji,EmojiSymbols" size="2"><span style="font-size:16px"><font face="Calibri,Helvetica,sans-serif,Helvetica,EmojiFont,Apple Color Emoji,Segoe UI Emoji,NotoColorEmoji,Segoe UI Symbol,Android Emoji,EmojiSymbols" size="2"><span style="color:rgb(0,0,0); font-size:12pt; font-family:"Calibri Light","Helvetica Light",sans-serif">Website: </span></font><a href="https://sites.google.com/view/smaranikabanerjee/welcome?authuser=0" target="_blank" rel="noopener noreferrer" title="https://sites.google.com/view/smaranikabanerjee/welcome?authuser=0 Cmd+Click or tap to follow the link" id="LPNoLP"><font face="Calibri,Helvetica,sans-serif,Helvetica,EmojiFont,Apple Color Emoji,Segoe UI Emoji,NotoColorEmoji,Segoe UI Symbol,Android Emoji,EmojiSymbols" size="2"><span style="color:rgb(0,0,0); font-size:12pt; font-family:"Calibri Light","Helvetica Light",sans-serif">https://sites.google.com/view/smaranikabanerjee/welcome?authuser=0</span></font></a></span></font></div>
<div style="font-size:16px; font-family:Calibri,Helvetica,sans-serif,Helvetica,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols">
<font face="Calibri,Helvetica,sans-serif,Helvetica,EmojiFont,Apple Color Emoji,Segoe UI Emoji,NotoColorEmoji,Segoe UI Symbol,Android Emoji,EmojiSymbols" size="2"><span style="font-size:12pt; color:rgb(0,0,0); font-family:"Calibri Light","Helvetica Light",sans-serif">Zoom: </span><a href="https://stockholmuniversity.zoom.us/j/3760189321" class="OWAAutoLink" id="LPNoLP"><span style="font-size:12pt; color:rgb(0,0,0); font-family:"Calibri Light","Helvetica Light",sans-serif">https://stockholmuniversity.zoom.us/j/3760189321</span></a></font></div>
<div style="font-size:16px; font-family:Calibri,Helvetica,sans-serif,Helvetica,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols">
<font face="Calibri,Helvetica,sans-serif,Helvetica,EmojiFont,Apple Color Emoji,Segoe UI Emoji,NotoColorEmoji,Segoe UI Symbol,Android Emoji,EmojiSymbols" size="2"><span style="font-size:16px"><font face="Helvetica,serif,EmojiFont" size="1" color="#212121"><span style="font-size:12pt; color:rgb(0,0,0); font-family:"Calibri Light","Helvetica Light",sans-serif">====================================</span></font></span></font><span style="color:rgb(0,0,0); font-family:"Calibri Light","Helvetica Light",sans-serif; font-size:12pt">===========================</span></div>
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