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Dear DAL members and DM chairs,<br>
<br>
Thanks you for your votes.<br>
<br>
Here are the info for the next DAL running meeting:<br>
<br>
<blockquote><font face="monospace"><b>Date :</b> Monday 12 May
2025</font><br>
<font face="monospace"><b>Time :</b> 2:00 PM UTC</font><br>
<font face="monospace"><b>Duration :</b> 1 hour</font><br>
<font face="monospace"><b>Zoom link:</b> <a
href="https://cnrs.zoom.us/j/93123478759?pwd=CijFJxycChKygbAT97JG3eYrvzbMlG.1"><span
style="white-space: pre-wrap">https://cnrs.zoom.us/j/93123478759?pwd=CijFJxycChKygbAT97JG3eYrvzbMlG.1</span></a></font><br>
<i>(</i><font size="1" face="monospace"><i><b>Meeting
ID:</b> 931 2347 8759 ; </i></font><font size="1"
face="monospace"><i><b>Passcode:</b> 85aNGH)</i></font><br>
</blockquote>
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Best regards,<br>
Grégory and Joshua<br>
<br>
<br>
<div class="moz-cite-prefix">On 25/04/2025 16:16, Gregory MANTELET
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:1b149a19-7f9c-4dc2-a115-6bb290ed2d28@astro.unistra.fr">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
Dear DAL members and DM chairs,<br>
<br>
In the IVOA and more specifically in DAL, we do not have yet a
stable solution<br>
to give access to spectral lines.<br>
<br>
For the record, <a
href="https://urldefense.com/v3/__https:/www.ivoa.net/documents/SLAP/20101209/index.html__;!!CrWY41Z8OgsX0i-WU-0LuAcUu2o!xXw1mHo0wm3raE559ej1IyKbxHBjoMMlryx6v15g6O7w1x8ZR81QKXwP1I5nlR7-UcBQXZvoXmRCCYatsYOGwMbd83I_vof7nqpG$"
moz-do-not-send="true"> REC-SLAP-1.0</a> (Simple Line Access
Protocol) was published in<br>
2010. Very few SLAP-1.0 services are available in the IVOA
Registry. It seems<br>
that the data model proposed by this protocol is not complete
enough: <a
href="https://urldefense.com/v3/__https:/www.ivoa.net/documents/SSLDM/20101209/index.html__;!!CrWY41Z8OgsX0i-WU-0LuAcUu2o!xXw1mHo0wm3raE559ej1IyKbxHBjoMMlryx6v15g6O7w1x8ZR81QKXwP1I5nlR7-UcBQXZvoXmRCCYatsYOGwMbd83I_vtjRWL8f$"
moz-do-not-send="true"> SSLDM-1.0</a>.<br>
With the help of VAMDC, a second version has been proposed: <a
href="https://urldefense.com/v3/__https:/www.ivoa.net/documents/SLAP/20190409/__;!!CrWY41Z8OgsX0i-WU-0LuAcUu2o!xXw1mHo0wm3raE559ej1IyKbxHBjoMMlryx6v15g6O7w1x8ZR81QKXwP1I5nlR7-UcBQXZvoXmRCCYatsYOGwMbd83I_vnbPwp32$"
moz-do-not-send="true"> SLAP-2.0</a>. It is a<br>
Working Draft since 2019. In parallel <a
href="https://urldefense.com/v3/__https:/www.ivoa.net/documents/SSLDM/20190909/__;!!CrWY41Z8OgsX0i-WU-0LuAcUu2o!xXw1mHo0wm3raE559ej1IyKbxHBjoMMlryx6v15g6O7w1x8ZR81QKXwP1I5nlR7-UcBQXZvoXmRCCYatsYOGwMbd83I_vi9pVVfw$"
moz-do-not-send="true"> SSLDM-2.0</a> (also in 2019) is a
Proposed<br>
Recommendation and reaches the RFC stage. Both have been frozen in
order to<br>
explore an alternative solution: <a
href="https://urldefense.com/v3/__https:/www.ivoa.net/documents/LineTAP/20241121/index.html__;!!CrWY41Z8OgsX0i-WU-0LuAcUu2o!xXw1mHo0wm3raE559ej1IyKbxHBjoMMlryx6v15g6O7w1x8ZR81QKXwP1I5nlR7-UcBQXZvoXmRCCYatsYOGwMbd83I_vm3C8Fl8$"
moz-do-not-send="true"> LineTAP</a>. It is based on TAP and
defines a<br>
different and independent data model.<br>
<br>
It is now time to decide which protocol is the most helpful from
the point of<br>
view of data providers and users. This is the goal of the DAL
Running Meeting<br>
that Joshua and I are now proposing. Note that, as the main actors
for spectral<br>
lines, I had recently a meeting with VAMDC and CASSIS developer in
order to have<br>
their point of view and see what would be their preferred solution
and why. I<br>
will start the running meeting by giving conclusions of this side
meeting.<br>
<br>
@Mark, Mathieu: I invited both of you because providing spectral
lines implies<br>
data models and more specifically SSLDM. It would nice to have one
of you<br>
during this meeting.<br>
<br>
Anyway, in order to find the best possible date, please, answer to
the following poll<br>
before the 2nd of May:<br>
<br>
<a
href="https://urldefense.com/v3/__https:/strawpoll.com/xVg716X0Qyr__;!!CrWY41Z8OgsX0i-WU-0LuAcUu2o!xXw1mHo0wm3raE559ej1IyKbxHBjoMMlryx6v15g6O7w1x8ZR81QKXwP1I5nlR7-UcBQXZvoXmRCCYatsYOGwMbd83I_vhVvE-8W$"
moz-do-not-send="true"> https://strawpoll.com/xVg716X0Qyr</a><br>
<br>
As usual, this meeting will be one hour long and will be remote
(using Zoom).<br>
<br>
Best regards,<br>
Grégory and Joshua </blockquote>
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