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Hi All,
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<div>I’m sure there will be many interesting sessions at next year’s IAU General Assembly in Rome and I wanted to advertise one that I’ve been involved with organising.</div>
<div><br>
</div>
<div>Cheers,</div>
<div>Sarah<br id="lineBreakAtBeginningOfMessage">
<div>
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<div>----------------------<br>
Professor Sarah Brough<br>
</div>
<div>Head of School | School of Physics</div>
<div>Chair | National Committee for Astronomy</div>
<div>Australian Observer | European Southern Observatory Council</div>
<div>AD: #G06, Old Main Building (K15) | UNSW Sydney | NSW 2052 | Australia</div>
<div>PH: +61 2 9065 2579<br>
<br>
I am sending this message now because it suits me. I don’t expect that you will read, respond to, or action it outside of your regular working hours.<br>
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<div><br>
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<span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif; color:rgba(0, 0, 0, 1.0);"><b>From:
</b></span><span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif;">Enrica Iodice <enrichetta.iodice@inaf.it><br>
</span></div>
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<span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif; color:rgba(0, 0, 0, 1.0);"><b>Subject:
</b></span><span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif;"><b>First Announcement: IAU-GA 2027 Symposium 420 "The Faint Universe"</b><br>
</span></div>
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<span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif; color:rgba(0, 0, 0, 1.0);"><b>Date:
</b></span><span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif;">27 October 2026 at 3:53:59 AM AEDT<br>
</span></div>
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<span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif; color:rgba(0, 0, 0, 1.0);"><b>To:
</b></span><span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif;">Enrica Iodice <enrichetta.iodice@inaf.it><br>
</span></div>
<br>
<div>
<div>
<p><font size="4" face="Times New Roman, Times, serif">Dear Colleagues</font><font face="Times New Roman, Times, serif"><br>
</font></p>
<p><font face="Times New Roman, Times, serif"><font size="4">the call for abstract is now open for the IAU Symposium 420, entitled "<a href="https://url.au.m.mimecastprotect.com/s/lDN8CXLW2mUG11jpWu6fLGsW2Kpf?domain=sites.google.com"><i><b href="https://sites.google.com/inaf.it/iau-symposium-420" moz-do-not-send="true">The
Faint Universe: Tracing Galaxy Evolution in the Low-Surface-Brightness Regime</b></i></a>", at the 33rd<b style="font-weight:normal;" id="docs-internal-guid-b248ea83-7fff-dc4e-141f-1f66291061fb"><span style="background-color: transparent; font-weight: 400; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-variant-alternates: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-variant-emoji: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">
<a href="https://url.au.m.mimecastprotect.com/s/lUpfCYW8NocgQQmGwhGhJgsxp_FF?domain=iaurome2027.org/">IAU General Assembly</a> in Rome, Italy, on August 17–19, 2027.
</span></b></font></font><font face="Times New Roman, Times, serif"><font size="4"><span>Please share this announcement with colleagues and other scientists who may be interested in participating.</span></font></font></p>
<font face="Times New Roman, Times, serif"><font size="4"><b><u>Context & aims</u>:<br>
</b></font><font size="4">t<span class="C9DxTc" style="font-weight: 400; vertical-align: baseline;">he IAU Symposium </span></font><font size="4"><span>will showcase recent observational and theoretical advances and highlight synergies with current and forthcoming
facilities.<br>
Topics will include the </span><strong><span>build-up of stellar halos and intracluster baryons</span></strong><span>, the
</span><strong><span>structure and formation of LSB galaxies</span></strong><span>, including ultra-diffuse galaxies (UDGs), and the synergies between
</span><strong><span>SKA precursor surveys and deep optical imaging</span></strong><span> to develop a more complete picture of mass assembly. Leading experts in theory will also review the latest high-resolution simulations and discuss their success in reproducing
these formation scenarios.<br>
</span></font><br>
<b><font size="4"><span class="C9DxTc" style="vertical-align: baseline;"><u>Confirmed Invited speakers:</u></span></font></b><br>
</font>
<blockquote><font size="4" face="Times New Roman, Times, serif"><span class="C9DxTc" style="font-weight: 700; vertical-align: baseline;">J. Benavides - </span></font><font face="Times New Roman, Times, serif"><font size="4"><span class="C9DxTc" style="font-weight: 400; vertical-align: baseline;">Universidad
de La Serena, La Serena, Chile</span></font></font><font face="Times New Roman, Times, serif"><br>
<font size="4"><span class="C9DxTc" style="font-weight: 700; vertical-align: baseline;"></span></font></font><font size="4" face="Times New Roman, Times, serif"><span class="C9DxTc" style="font-weight: 700; vertical-align: baseline;">A. Borlaff -
</span><span class="C9DxTc" style="font-weight: 400; vertical-align: baseline;">NASA Ames Research Center; Bay Area Environmental Research Institute, USA</span><span class="C9DxTc" style="font-weight: 700; vertical-align: baseline;"></span></font><font face="Times New Roman, Times, serif"><br>
<font size="4"><span class="C9DxTc" style="font-weight: 700; vertical-align: baseline;"></span></font></font><font face="Times New Roman, Times, serif"><font size="4"><span class="C9DxTc" style="font-weight: 700; vertical-align: baseline;">A. Ferguson
</span><span class="C9DxTc" style="font-weight: 400; vertical-align: baseline;">- Institute for Astronomy, School of Physics and Astronomy, University of Edinburgh, UK</span><span class="C9DxTc" style="font-weight: 700; vertical-align: baseline;"></span></font><br>
<font size="4"><span class="C9DxTc" style="font-weight: 700; vertical-align: baseline;">J. Hartke -
</span><span class="C9DxTc" style="font-weight: 400; vertical-align: baseline;">University of Turku; Finnish Centre for Astronomy with ESO (FINCA),</span><span class="C9DxTc" style="font-weight: 400; vertical-align: baseline;">Finland</span></font><br>
<font size="4"><span class="C9DxTc" style="font-weight: 400; vertical-align: baseline;"></span><span class="C9DxTc" style="font-weight: 700; vertical-align: baseline;">N. Hatch -
</span><span class="C9DxTc" style="font-weight: 400; vertical-align: baseline;">School of Physics and Astronomy, University of Nottingham, UK</span></font><br>
<font size="4"><span class="C9DxTc" style="font-weight: 400; vertical-align: baseline;"></span><span class="C9DxTc" style="font-weight: 700; vertical-align: baseline;">L. Kimmig -
</span><span class="C9DxTc" style="font-weight: 400; vertical-align: baseline;">University Observatory Munich, Ludwig Maximilian University of Munich (LMU), Germany</span></font><br>
<font size="4"><span class="C9DxTc" style="font-weight: 400; vertical-align: baseline;"></span><span class="C9DxTc" style="font-weight: 700; vertical-align: baseline;">B. Koribalski -
</span><span class="C9DxTc" style="font-weight: 400; vertical-align: baseline;">Australia Telescope National Facility (ATNF), CSIRO Space and Astronomy, Australia</span></font><br>
<font size="4"><span class="C9DxTc" style="font-weight: 400; vertical-align: baseline;"></span><span class="C9DxTc" style="font-weight: 700; vertical-align: baseline;">A. Monachesi -</span><span class="C9DxTc" style="font-weight: 400; vertical-align: baseline;">
Universidad de La Serena, La Serena, Chile</span></font><br>
<font size="4"><span class="C9DxTc" style="font-weight: 400; vertical-align: baseline;"></span><span class="C9DxTc" style="font-weight: 700; vertical-align: baseline;">M. Montes -</span><span class="C9DxTc" style="font-weight: 400; vertical-align: baseline;">
Institute of Space Sciences (ICE-CSIC), Cerdanyola del Vallès, Barcelona, Spain</span></font><br>
<font size="4"><span class="C9DxTc" style="font-weight: 400; vertical-align: baseline;"></span><span class="C9DxTc" style="font-weight: 700; vertical-align: baseline;">A. Smercina -
</span><span class="C9DxTc" style="font-weight: 400; vertical-align: baseline;">Department of Physics and Astronomy, Tufts University, USA</span></font><br>
<font size="4"><span class="C9DxTc" style="font-weight: 400; vertical-align: baseline;"></span><span class="C9DxTc" style="font-variant: normal; font-weight: 700; vertical-align: baseline;">M. Spavone -</span><span class="C9DxTc" style="font-variant: normal; font-weight: 400; vertical-align: baseline;">
INAF-Astronomical Observatory of Capodimonte, Naples, Italy</span></font><br>
<font size="4"><span class="C9DxTc" style="font-variant: normal; font-weight: 400; vertical-align: baseline;"></span><span class="C9DxTc" style="font-weight: 700; vertical-align: baseline;">K.</span><span class="C9DxTc" style="font-weight: 700; vertical-align: baseline;">
</span><span class="C9DxTc" style="font-weight: 700; vertical-align: baseline;">Spekkens -
</span><span class="C9DxTc" style="font-weight: 400; vertical-align: baseline;">Department of Physics, Engineering Physics and Astronomy, Queen's University, Canada</span></font><br>
<font size="4"><span class="C9DxTc" style="font-weight: 400; vertical-align: baseline;"></span><span class="C9DxTc" style="font-weight: 700; vertical-align: baseline;">I.</span><span class="C9DxTc" style="font-weight: 700; vertical-align: baseline;">
</span><span class="C9DxTc" style="font-weight: 700; vertical-align: baseline;">Trujillo -
</span><span class="C9DxTc" style="font-weight: 400; vertical-align: baseline;">Instituto de Astrofísica de Canarias (IAC), Spain</span></font><br>
<font size="4"><span class="C9DxTc" style="font-weight: 400; vertical-align: baseline;"></span><span class="C9DxTc" style="font-weight: 700; vertical-align: baseline;">D. Zaritsky -
</span><span class="C9DxTc" style="font-weight: 400; vertical-align: baseline;">Department of Astronomy and Steward Observatory, University of Arizona, USA</span></font></font></blockquote>
<font face="Times New Roman, Times, serif"><b><font size="4"><span class="C9DxTc" style="vertical-align: baseline;"><u>Scientific Organizing Committee: </u></span></font></b></font><br>
<blockquote><font face="Times New Roman, Times, serif"><font size="4"><span class="jgG6ef C9DxTc" style="font-weight: 700; vertical-align: baseline;">S. Brough</span><span class="jgG6ef C9DxTc" style="font-weight: 400; vertical-align: baseline;">, UNSW, Australia<br>
</span><span class="jgG6ef C9DxTc" style="font-weight: 700; vertical-align: baseline;">B. Catinella</span><span class="jgG6ef C9DxTc" style="font-weight: 400; vertical-align: baseline;">, ICRAR/UWA, Australia<br>
</span></font><font size="4"><span class="jgG6ef C9DxTc" style="font-weight: 700; vertical-align: baseline;">A. Cooper</span><span class="jgG6ef C9DxTc" style="font-weight: 400; vertical-align: baseline;">, National Tsing Hua University, Taiwan <br>
</span></font><font size="4"><span class="jgG6ef C9DxTc" style="font-weight: 700; vertical-align: baseline;">A. Cortesi</span><span class="jgG6ef C9DxTc" style="font-weight: 400; vertical-align: baseline;">,</span></font><span> </span><span>Universidade
</span><span>Federal </span><span>do </span><span>Rio </span><span>de </span><span>Janeiro
</span><span>(UFRJ), </span><span>Brazil</span><font size="4"><span class="jgG6ef C9DxTc" style="font-weight: 400; vertical-align: baseline;"> <br>
</span></font><font size="4"><span class="jgG6ef C9DxTc" style="font-weight: 700; vertical-align: baseline;">S. Danieli</span><span class="jgG6ef C9DxTc" style="font-weight: 400; vertical-align: baseline;">, Tel Aviv University, Israel<br>
</span></font><font size="4"><span class="jgG6ef C9DxTc" style="font-variant-ligatures: normal; font-variant-caps: normal; font-variant-alternates: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-variant-emoji: normal; font-weight: 700; vertical-align: baseline;">P.-A.
Duc</span><span class="jgG6ef C9DxTc" style="font-variant-ligatures: normal; font-variant-caps: normal; font-variant-alternates: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-variant-emoji: normal; font-weight: 400; vertical-align: baseline;">,
Strasbourg </span><span class="jgG6ef C9DxTc" style="font-weight: 400; vertical-align: baseline;">A</span><span class="jgG6ef C9DxTc" style="font-variant-ligatures: normal; font-variant-caps: normal; font-variant-alternates: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-variant-emoji: normal; font-weight: 400; vertical-align: baseline;">stronomical
Obs., France (</span><span class="jgG6ef C9DxTc" style="font-variant-ligatures: normal; font-variant-caps: normal; font-variant-alternates: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-variant-emoji: normal; font-weight: 400; text-decoration: underline; vertical-align: baseline;">co-chair</span><span class="jgG6ef C9DxTc" style="font-variant-ligatures: normal; font-variant-caps: normal; font-variant-alternates: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-variant-emoji: normal; font-weight: 400; vertical-align: baseline;">)<br>
</span></font><font size="4"><span class="jgG6ef C9DxTc" style="font-weight: 700; vertical-align: baseline;">M. Hilton</span><span class="jgG6ef C9DxTc" style="font-weight: 400; vertical-align: baseline;">, Wits/UKZN, South Africa<br>
</span></font><font size="4"><span class="jgG6ef C9DxTc" style="font-weight: 700; vertical-align: baseline;">S. Kaviraj</span><span class="jgG6ef C9DxTc" style="font-weight: 400; vertical-align: baseline;">, University of Hertfordshire, UK <br>
</span></font><font size="4"><span class="jgG6ef C9DxTc" style="font-weight: 700; vertical-align: baseline;">J. Knapen</span><span class="jgG6ef C9DxTc" style="font-weight: 400; vertical-align: baseline;">, IAC, Spain<br>
</span></font><font size="4"><span class="jgG6ef C9DxTc" style="font-variant-ligatures: normal; font-variant-caps: normal; font-variant-alternates: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-variant-emoji: normal; font-weight: 700; vertical-align: baseline;">E.
Iodice</span><span class="jgG6ef C9DxTc" style="font-variant-ligatures: normal; font-variant-caps: normal; font-variant-alternates: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-variant-emoji: normal; font-weight: 400; vertical-align: baseline;">,
INAF-Astronomical Observatory of Capodimonte, Italy (</span><span class="jgG6ef C9DxTc" style="font-variant-ligatures: normal; font-variant-caps: normal; font-variant-alternates: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-variant-emoji: normal; font-weight: 400; text-decoration: underline; vertical-align: baseline;">Chair</span><span class="jgG6ef C9DxTc" style="font-variant-ligatures: normal; font-variant-caps: normal; font-variant-alternates: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-variant-emoji: normal; font-weight: 400; vertical-align: baseline;">)<br>
</span></font><font size="4"><span class="jgG6ef C9DxTc" style="font-weight: 700; vertical-align: baseline;">C. Mihos</span><span class="jgG6ef C9DxTc" style="font-weight: 400; vertical-align: baseline;">, CWRU, USA<br>
</span><span class="jgG6ef C9DxTc" style="font-weight: 700; vertical-align: baseline;">R. Skelton</span><span class="jgG6ef C9DxTc" style="font-weight: 400; vertical-align: baseline;">, South African Astronomical Observatory<br>
</span></font><font size="4"><span class="jgG6ef C9DxTc" style="font-weight: 700; vertical-align: baseline;">M. Tanaka</span><span class="jgG6ef C9DxTc" style="font-weight: 400; vertical-align: baseline;">, NAO of Japan<br>
</span></font><font size="4"><span class="jgG6ef C9DxTc" style="font-weight: 700; vertical-align: baseline;">T. Puzia</span><span class="jgG6ef C9DxTc" style="font-weight: 400; vertical-align: baseline;">, </span></font><span>Institute
</span><span>of </span><span>Astrophysics, </span><span>Pontificia </span><span>Universidad
</span><span>Católica </span><span>de </span><span>Chile, </span><span>Santiago, </span>
<span>Chile<br>
</span><font size="4"><span class="jgG6ef C9DxTc" style="font-variant-ligatures: normal; font-variant-caps: normal; font-variant-alternates: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-variant-emoji: normal; font-weight: 700; vertical-align: baseline;">R.
de Souza</span><span class="jgG6ef C9DxTc" style="font-variant-ligatures: normal; font-variant-caps: normal; font-variant-alternates: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-variant-emoji: normal; font-weight: 400; vertical-align: baseline;">,
Vatican Observatory, Città del Vaticano<br>
</span></font><font size="4"><span class="jgG6ef C9DxTc" style="font-weight: 700; vertical-align: baseline;">L. Zhu</span><span class="jgG6ef C9DxTc" style="font-weight: 400; vertical-align: baseline;">, Shanghai Astronomical Observatory</span></font><br>
</font></blockquote>
<font face="Times New Roman, Times, serif"><b><font size="4"><span class="C9DxTc" style="vertical-align: baseline;"><u>Key Dates:</u></span></font></b><br>
</font>
<ul>
<li><font size="4" face="Times New Roman, Times, serif"><u>Abstract submission & travel grant</u>:
<b>January 15, 2027</b></font></li><li><font size="4" face="Times New Roman, Times, serif"><u>Notification of the abstract acceptance</u>:
<b>February 15, 2027</b></font><font face="Times New Roman, Times, serif"><span id="docs-internal-guid-b248ea83-7fff-dc4e-141f-1f66291061fb">
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 11pt; background-color: transparent; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-variant-alternates: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-variant-emoji: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"></span></p>
</span></font></li><li><font size="4" face="Times New Roman, Times, serif"><u>Authors registration deadline</u>:
<b>March 5, 2027</b></font></li></ul>
<font face="Times New Roman, Times, serif"><font size="4"><span>We look forward to your contributions and to welcoming you to Rome!</span></font><br>
</font><b style="font-weight:normal;" id="docs-internal-guid-b248ea83-7fff-dc4e-141f-1f66291061fb">
<div style="line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt;"><font size="4" face="Times New Roman, Times, serif"><span style="background-color: transparent; font-weight: 400; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-variant-alternates: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-variant-emoji: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">Best
Wishes</span></font></div>
<div style="line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt;"><font size="4" face="Times New Roman, Times, serif"><span style="background-color: transparent; font-weight: 400; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-variant-alternates: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-variant-emoji: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">Enrica</span></font></div>
</b><b style="font-weight:normal;" id="docs-internal-guid-b248ea83-7fff-dc4e-141f-1f66291061fb"></b>
<p><br>
</p>
<pre class="moz-signature" cols="72">--
Staff Astronomer
INAF-Astronomical Observatory of Capodimonte
salita Moiariello, 16
I-80131 Napoli, Italy
tel. 00390815575546
skype: enricaiodice
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