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<p><b><font face="Arial,Helvetica,sans-serif,serif,EmojiFont" size="3" color="black"><span style="font-size:12pt; font-weight:normal">On Friday 11/03 we have the next astronomy seminar with</span></font><font face="Arial,Helvetica,sans-serif,serif,EmojiFont" size="3" color="black"><span style="font-size:12pt; font-weight:normal"> Jon
Sundqvist</span></font><font face="Arial,Helvetica,sans-serif,serif,EmojiFont" size="3" color="black"><span style="font-size:12pt; font-weight:normal"> (KU Leuven) </span></font><font face="Arial,Helvetica,sans-serif,serif,EmojiFont" size="3"><span style="font-size:12pt; font-weight:normal">speaking
at 10:30 via Zoom.</span></font></b><br>
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join the call before 10:30!</span></font><font face="Arial,Helvetica,sans-serif,serif,EmojiFont" size="3"><span style="font-size:12pt; font-weight:normal">)</span></font></b></font></div>
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<font size="4" style="font-family:Arial,sans-serif,serif,EmojiFont"><span style="font-size:14pt"><b><span style="font-size:12pt">Radiation-Hydrodynamics at the Edge: The Lives and Deaths of the Most Massive Stars in our Universe</span></b></span></font></div>
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<i><font size="4" style="font-family:Arial,sans-serif,serif,EmojiFont"><span style="font-size:12pt">In many astrophysical situations radiation plays a key role for the dynamics of the system (AGN accretion disks and outflows, supernovae, the first stars, etc.).
After first highlighting some quite general issues when dealing with such radiation-hydrodynamic (RHD) flows, this talk zooms in on luminous stars with masses many times that of our Sun. We will show how strong radiation forces there lead to highly structured
atmospheres as well as powerful stellar outflows, and how such winds critically shape the violent life-cycles of these stars, all the way from their formation to their death.</span></font><font size="4" style="font-family:Arial,sans-serif,serif,EmojiFont"><span style="font-size:12pt"> </span></font><br>
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<font size="4" style="font-family:Arial,sans-serif,serif,EmojiFont"><span style="font-size:12pt"><i>A few recent research-results from our group that will be discussed involve: i) how new blue-star wind models may call for a revision of the ‘standard’ formation-channel
for classical Wolf-Rayet (WR) stars (as well as have consequences for formation of high-mass stellar black holes); ii) how new red-star mass loss models may tentatively explain some observed properties of Type II-P/L supernovae, and iii) how our first (and
brand new) 3D-RHD models of massive helium-stars lead to a natural transition between WR stars and the hot, stripped sub-dwarfs believed to be the products of binary evolution. </i></span></font></div>
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<font size="4" style="font-family:Arial,sans-serif,serif,EmojiFont"><span style="font-size:12pt"><i>And indeed, we highlight how these results have all (more or less) been derived from the same overarching research question: “how to get blown away by starlight?” </i></span></font></div>
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<div style="margin-top:14pt; margin-bottom:14pt"><font face="Calibri,Helvetica,sans-serif,serif,EmojiFont">If anyone is interested in chatting with the speaker, we can leave the zoom call on after the seminar. </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="3" color="black"><font face="Calibri,Helvetica,sans-serif,serif,EmojiFont">Cheers,</font></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="3" color="black"><font face="Calibri,Helvetica,sans-serif,serif,EmojiFont">Chris and Carolina</font></font></div>
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<p>-----------------------------------------------------------------------------------------------<span style="font-size:12pt"></span></p>
<p><br>
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<p>Carolina Robustini is inviting you to a scheduled Zoom meeting.</p>
<p><br>
</p>
<p>Topic: Astronomy Department Seminar - Jon Sundqvist</p>
<p>Time: Mar 11, 2022 10:30 AM Stockholm</p>
<p><br>
</p>
<p>Join Zoom Meeting</p>
<p>https://stockholmuniversity.zoom.us/j/66310610960?pwd=SitJZGI3ZUl5b3ZzWkNVZEZ1clpmdz09</p>
<p><br>
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<p>Meeting ID: 663 1061 0960</p>
<p>Passcode: 621431</p>
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<p>Meeting ID: 663 1061 0960</p>
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<p><span style="margin:0px; padding:0px; border:0px none; outline:0px; font-size:12pt; font-family:Verdana,Arial,Helvetica,sans-serif; vertical-align:baseline; display:block; color:rgb(38,44,42)"><br>
</span><span style="margin:0px; padding:0px; border:0px none; outline:0px; font-size:12.15999984741211px; font-family:Verdana,Arial,Helvetica,sans-serif; vertical-align:baseline; display:block; color:rgb(38,44,42)"></span><span style="margin:0px; padding:0px; border:0px none; outline:0px; vertical-align:baseline; display:block"><span style="color:rgb(33,33,33); font-family:wf_segoe-ui_normal,"Segoe UI","Segoe WP",Tahoma,Arial,sans-serif,serif,EmojiFont; font-size:12pt">Carolina
Robustini </span></span><span style="margin:0px; padding:0px; border:0px none; outline:0px; vertical-align:baseline; display:block"><span style="color:rgb(33,33,33); font-family:wf_segoe-ui_normal,"Segoe UI","Segoe WP",Tahoma,Arial,sans-serif,serif,EmojiFont; font-size:12pt">Inst.
f. Solar Physics, Dept. of Astronomy, Stockholm University</span><br style="color:rgb(33,33,33); font-family:wf_segoe-ui_normal,"Segoe UI","Segoe WP",Tahoma,Arial,sans-serif,serif,EmojiFont; font-size:13.333333015441895px">
<span style="font-size:12pt"></span><span style="color:rgb(33,33,33); font-family:wf_segoe-ui_normal,"Segoe UI","Segoe WP",Tahoma,Arial,sans-serif,serif,EmojiFont; font-size:12pt">AlbaNova University Centre, SE-10691 Stockholm, Sweden</span><br style="color:rgb(33,33,33); font-family:wf_segoe-ui_normal,"Segoe UI","Segoe WP",Tahoma,Arial,sans-serif,serif,EmojiFont; font-size:13.333333015441895px">
<span style="font-size:12pt"></span><font color="#212121" face="wf_segoe-ui_normal, Segoe UI, Segoe WP, Tahoma, Arial, sans-serif, serif, EmojiFont" size="2"><span style="font-size:12pt">Email: carolina.robustini@astro.su.se</span></font><br>
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