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	<title>PADC</title>
	<link>https://padc.obspm.fr/</link>
	
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		<title>PADC</title>
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		<link>https://padc.obspm.fr/</link>
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<item xml:lang="en">
		<title>OntoPortal-Astro: Un catalogue d'artefact s&#233;mantique pour l'astronomie</title>
		<link>https://padc.obspm.fr/OntoPortal-Astro-Un-catalogue-d-artefact-semantique-pour-l-astronomie</link>
		<guid isPermaLink="true">https://padc.obspm.fr/OntoPortal-Astro-Un-catalogue-d-artefact-semantique-pour-l-astronomie</guid>
		<dc:date>2025-12-05T10:16:53Z</dc:date>
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		<dc:language>en</dc:language>
		<dc:creator>Stephane Erard</dc:creator>



		<description>
&lt;p&gt;Cl&#233;ment Jonquet (INRAE) Baptiste Cecconi (ObsParis) &lt;br class='autobr' /&gt;
Lundi 15 dec 2025 &#224; 15h, Salle du Levant &#224; Paris &lt;br class='autobr' /&gt; Nous pr&#233;sentons l'outil communautaire OntoPortal initialement d&#233;velopp&#233; par Stanford (USA) et plus r&#233;cemment par l'INRAE (Montpellier), avec leur portail AgroPortal. Cet outil est un catalogue d'artefact s&#233;mantique (un terme g&#233;n&#233;rique pour des vocabulaires, th&#233;saurus, ou ontologies), avec des fonctionnalit&#233;s avanc&#233;es pour explorer, annoter, partager des concepts et des ontologies. La plateforme inclut (...)&lt;/p&gt;


-
&lt;a href="https://padc.obspm.fr/-seminars-" rel="directory"&gt;Seminars&lt;/a&gt;


		</description>


 <content:encoded>&lt;div class='rss_chapo'&gt;&lt;p&gt;Cl&#233;ment Jonquet (INRAE)&lt;br class='autobr' /&gt;
Baptiste Cecconi (ObsParis)&lt;/p&gt;
&lt;p&gt;Lundi 15 dec 2025 &#224; 15h, Salle du Levant &#224; Paris&lt;/p&gt;&lt;/div&gt;
		&lt;div class='rss_texte'&gt;&lt;p&gt;Nous pr&#233;sentons l'outil communautaire OntoPortal initialement d&#233;velopp&#233; par Stanford (USA) et plus r&#233;cemment par l'INRAE (Montpellier), avec leur portail AgroPortal. Cet outil est un catalogue d'artefact s&#233;mantique (un terme g&#233;n&#233;rique pour des vocabulaires, th&#233;saurus, ou ontologies), avec des fonctionnalit&#233;s avanc&#233;es pour explorer, annoter, partager des concepts et des ontologies. La plateforme inclut aussi une interface interoperable (API) pour une interaction sous forme de script, ainsi qu'un outil d'&#233;valuation des crit&#232;re FAIR (Findable Accessible, Interoperable and Reusable) appliqu&#233;s aux ontologies. Avec l'aide de l'&#233;quipe de l'INRAE &#224; Montpellier, nous avons install&#233; un serveur d&#233;di&#233; &#224; l'astronomie au sens large: &lt;a href=&#034;https://ontoportal-astro.eu&#034; class='spip_url spip_out auto' rel='nofollow external'&gt;https://ontoportal-astro.eu&lt;/a&gt;, qui liste d&#233;j&#224; les vocabulaires de l'IVOA (astronomie) et dont le r&#244;le est de partager et croiser les ontologies et vocabulaires des diff&#233;rentes composantes de l'astronomie: h&#233;liophysique, plan&#233;tologie, astronomie, astrophysique, astroparticules, cosmologie physique atomique et mol&#233;culaire, mod&#233;lisation, etc. Nous pr&#233;senterons la plateforme Ontoportal/AgroPortal de l'INRAE et notre nouvelle plateforme ontoportal-astro.eu.&lt;/p&gt;&lt;/div&gt;
		
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	</item>
<item xml:lang="en">
		<title>The Occultation Portal at Observatory of Paris</title>
		<link>https://padc.obspm.fr/The-Occultation-Portal-at-Observatory-of-Paris-72</link>
		<guid isPermaLink="true">https://padc.obspm.fr/The-Occultation-Portal-at-Observatory-of-Paris-72</guid>
		<dc:date>2025-11-18T22:38:38Z</dc:date>
		<dc:format>text/html</dc:format>
		<dc:language>en</dc:language>
		<dc:creator>Stephane Erard</dc:creator>



		<description>
&lt;p&gt;Mercredi 26 novembre 2025, 16h30 Salle du Chateau &#224; Meudon (and on-line) S&#233;minaire LIRA/PADC/ProAM &lt;br class='autobr' /&gt;
The Occultation Portal at the Paris Observatory (OPOP): Migration and Institutional Integration Y&#252;cel K&#305;l&#305;c &lt;br class='autobr' /&gt; The Occultation Portal (OP) is a scientific infrastructure originally developed within the ERC Lucky Star collaboration with groups from Paris, Meudon, Granada and Rio, and is now actively used in ongoing occultation-focused projects such as ACROSS and GaiaMoons. It supports the full (...)&lt;/p&gt;


-
&lt;a href="https://padc.obspm.fr/-seminars-" rel="directory"&gt;Seminars&lt;/a&gt;


		</description>


 <content:encoded>&lt;div class='rss_chapo'&gt;&lt;p&gt;Mercredi 26 novembre 2025, 16h30 Salle du Chateau &#224; Meudon (and on-line)&lt;br class='autobr' /&gt;
S&#233;minaire LIRA/PADC/ProAM&lt;/p&gt;
&lt;p&gt;The Occultation Portal at the Paris Observatory (OPOP): Migration and Institutional Integration&lt;br class='autobr' /&gt;
Y&#252;cel K&#305;l&#305;c&lt;/p&gt;&lt;/div&gt;
		&lt;div class='rss_texte'&gt;&lt;p&gt;The Occultation Portal (OP) is a scientific infrastructure originally developed within the ERC Lucky Star collaboration with groups from Paris, Meudon, Granada and Rio, and is now actively used in ongoing occultation-focused projects such as ACROSS and GaiaMoons. It supports the full workflow of stellar occultation studies, including prediction and campaign coordination, as well as the ingestion, validation, and long-term archiving of both video-based and photometric observations. With upcoming surveys such as LSST and future Gaia releases expected to significantly increase the number of observable events, ensuring the scalability and operational robustness of the OP has become essential.&lt;br class='autobr' /&gt;
Over the past six months, the Occultation Portal has been migrated to the PADC/DIO infrastructure of the Paris Observatory and has undergone a broad technical modernisation. This work includes the implementation of a full MD5-based data-integrity framework, GDPR-compliant handling of user and observatory information, a redesigned user-registration and moderation workflow, an upgraded publication system with ADS-powered metadata ingestion linking scientific outputs to OP events and archived data, and extended prediction and mapping tools. Together, these developments greatly enhance the platform's long-term stability and ensure that the OP continues to serve as a reliable infrastructure for advancing stellar occultation science.&lt;/p&gt;
&lt;p&gt;Recording on astrotube:&lt;br class='autobr' /&gt;
&lt;a href=&#034;https://astrotube.obspm.fr/w/mCqqQrJ5h9ZFpMMA6exxkL&#034; class='spip_url spip_out auto' rel='nofollow external'&gt;https://astrotube.obspm.fr/w/mCqqQrJ5h9ZFpMMA6exxkL&lt;/a&gt;&lt;/p&gt;&lt;/div&gt;
		
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	</item>
<item xml:lang="en">
		<title> Markus Demleitner on DaCHS</title>
		<link>https://padc.obspm.fr/Markus-Demleitner-on-DaCHS</link>
		<guid isPermaLink="true">https://padc.obspm.fr/Markus-Demleitner-on-DaCHS</guid>
		<dc:date>2024-02-26T19:05:18Z</dc:date>
		<dc:format>text/html</dc:format>
		<dc:language>en</dc:language>
		<dc:creator>Stephane Erard</dc:creator>



		<description>
&lt;p&gt;9h30 salle Denisse le jeudi 29 F&#233;vrier &lt;br class='autobr' /&gt; Unsing DaCHS for images and spectra, with practical examples&lt;/p&gt;


-
&lt;a href="https://padc.obspm.fr/-seminars-" rel="directory"&gt;Seminars&lt;/a&gt;


		</description>


 <content:encoded>&lt;div class='rss_chapo'&gt;&lt;p&gt;9h30 salle Denisse le jeudi 29 F&#233;vrier&lt;/p&gt;&lt;/div&gt;
		&lt;div class='rss_texte'&gt;&lt;p&gt;Unsing DaCHS for images and spectra, with practical examples&lt;/p&gt;&lt;/div&gt;
		
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	</item>
<item xml:lang="en">
		<title>IHDEA cloud workshop</title>
		<link>https://padc.obspm.fr/IHDEA-cloud-workshop</link>
		<guid isPermaLink="true">https://padc.obspm.fr/IHDEA-cloud-workshop</guid>
		<dc:date>2023-03-08T07:55:51Z</dc:date>
		<dc:format>text/html</dc:format>
		<dc:language>en</dc:language>
		<dc:creator>Stephane Erard</dc:creator>



		<description>
&lt;p&gt;IHDEA-cloud workshop &lt;br class='autobr' /&gt; 11 July 2023, 09:00 &#8594; 13 July 2023
&lt;br class='autobr' /&gt;
Observatoire de Paris (77 avenue Denfert-Rochereau, 75014 Paris) &lt;br class='autobr' /&gt;
Lors de la r&#233;union IHDEA 2022, il a &#233;t&#233; d&#233;cid&#233; d'organiser un atelier autour des &#171; science platforms &#187; cloud pour l'H&#233;liophysique. Il sera organis&#233; par B. Cecconi en juillet 2023 &#224; l'Observatoire de Paris. &lt;br class='autobr' /&gt;
Les solutions d&#233;velopp&#233;es par l'ESA (ESA-Datalabs) et par la NASA (Helio-cloud) seront d&#233;taill&#233;es, mais aussi celles issues de projets comme ESCAPE. Un des attendus de cet atelier (...)&lt;/p&gt;


-
&lt;a href="https://padc.obspm.fr/-workshops-" rel="directory"&gt;Workshops&lt;/a&gt;


		</description>


 <content:encoded>&lt;div class='rss_chapo'&gt;&lt;p&gt;IHDEA-cloud workshop&lt;/p&gt;&lt;/div&gt;
		&lt;div class='rss_texte'&gt;&lt;p&gt;11 July 2023, 09:00 &#8594; 13 July 2023&lt;br class='autobr' /&gt;
Observatoire de Paris (77 avenue Denfert-Rochereau, 75014 Paris)&lt;/p&gt;
&lt;p&gt;Lors de la r&#233;union IHDEA 2022, il a &#233;t&#233; d&#233;cid&#233; d'organiser un atelier autour des &#171; science platforms &#187; cloud pour l'H&#233;liophysique. Il sera organis&#233; par B. Cecconi en juillet 2023 &#224; l'Observatoire de Paris.&lt;/p&gt;
&lt;p&gt;Les solutions d&#233;velopp&#233;es par l'ESA (ESA-Datalabs) et par la NASA (Helio-cloud) seront d&#233;taill&#233;es, mais aussi celles issues de projets comme ESCAPE. Un des attendus de cet atelier est une r&#233;flexion sur l'interop&#233;rabilit&#233; des cha&#238;nes de traitement entre ces espaces de calcul et de stockage.&lt;/p&gt;
&lt;p&gt;Registration:&lt;br class='autobr' /&gt;
&lt;a href=&#034;https://indico.obspm.fr/event/1714&#034; class='spip_out' rel='external'&gt;https://indico.obspm.fr/event/1714&lt;/a&gt;&lt;/p&gt;&lt;/div&gt;
		
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	</item>
<item xml:lang="en">
		<title>Provenance in Practice</title>
		<link>https://padc.obspm.fr/Provenance-in-Practice</link>
		<guid isPermaLink="true">https://padc.obspm.fr/Provenance-in-Practice</guid>
		<dc:date>2021-11-03T09:05:42Z</dc:date>
		<dc:format>text/html</dc:format>
		<dc:language>en</dc:language>
		<dc:creator>Stephane Erard</dc:creator>



		<description>
&lt;p&gt;Provenance in Practice - ASOV meeting &lt;br class='autobr' /&gt; 14 Dec 2021, 09:30 &#8594; 15 Dec 2021, 12:00 Europe/Paris Observatoire de Paris (77 avenue Denfert-Rochereau, 75014 Paris) &lt;br class='autobr' /&gt;
The objective of this meeting is to bring together the ASOV community and beyond to exchange on the needs expressed and solutions proposed to manage provenance information in the astronomy domain. &lt;br class='autobr' /&gt;
Provenance in practice has been discussed within the ESCAPE European project (with a dedicated workshop [1]), and at the last ADASS and (...)&lt;/p&gt;


-
&lt;a href="https://padc.obspm.fr/-workshops-" rel="directory"&gt;Workshops&lt;/a&gt;


		</description>


 <content:encoded>&lt;div class='rss_chapo'&gt;&lt;p&gt;Provenance in Practice - ASOV meeting&lt;/p&gt;&lt;/div&gt;
		&lt;div class='rss_texte'&gt;&lt;p&gt;14 Dec 2021, 09:30 &#8594; 15 Dec 2021, 12:00 Europe/Paris&lt;br class='autobr' /&gt;
Observatoire de Paris (77 avenue Denfert-Rochereau, 75014 Paris)&lt;/p&gt;
&lt;p&gt;The objective of this meeting is to bring together the ASOV community and beyond to exchange on the needs expressed and solutions proposed to manage provenance information in the astronomy domain.&lt;/p&gt;
&lt;p&gt;Provenance in practice has been discussed within the ESCAPE European project (with a dedicated workshop [1]), and at the last ADASS and IVOA conferences (see e.g. [2]). Building on prototype implementations, a full provenance management system has been designed [3]. For simpler use, the concept of last-step provenance was also recently proposed to make provenance easier to adopt.&lt;/p&gt;
&lt;p&gt;Here are some topics that may be addressed during the meeting :&lt;br class='autobr' /&gt;
Existing and considered provenance recommendations at IVOA&lt;br class='autobr' /&gt;
Data models&lt;br class='autobr' /&gt;
Simplified views of the data model (last-step provenance)&lt;br class='autobr' /&gt;
Access protocols (ProvSAP, ProvTAP)&lt;br class='autobr' /&gt;
Serializations&lt;br class='autobr' /&gt;
Use cases for the capture and the use of provenance information&lt;br class='autobr' /&gt;
Inputs from ESCAPE partners&lt;br class='autobr' /&gt;
Finding the right granularity for the capture&lt;br class='autobr' /&gt;
Connections with workflows&lt;br class='autobr' /&gt;
Demo of implemented tools (voprov, ProvSAP, ProvTAP, logprov...)&lt;br class='autobr' /&gt;
Towards a full provenance management system&lt;/p&gt;
&lt;p&gt;Registration:&lt;br class='autobr' /&gt;
&lt;a href=&#034;https://indico.obspm.fr/event/1267&#034; class='spip_out' rel='external'&gt;https://indico.obspm.fr/event/1267&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;[1] &lt;a href=&#034;https://indico.in2p3.fr/event/21913/page/2641-summary&#034; class='spip_url spip_out auto' rel='nofollow external'&gt;https://indico.in2p3.fr/event/21913/page/2641-summary&lt;/a&gt;&lt;br class='autobr' /&gt;
[2] &lt;a href=&#034;https://arxiv.org/abs/2101.08691&#034; class='spip_url spip_out auto' rel='nofollow external'&gt;https://arxiv.org/abs/2101.08691&lt;/a&gt;&lt;br class='autobr' /&gt;
[3] &lt;a href=&#034;https://arxiv.org/abs/2109.07751&#034; class='spip_url spip_out auto' rel='nofollow external'&gt;https://arxiv.org/abs/2109.07751&lt;/a&gt;&lt;/p&gt;&lt;/div&gt;
		
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	</item>
<item xml:lang="en">
		<title>Commencer l'int&#233;gration et le d&#233;ploiement continus avec Gitlab CI/CD</title>
		<link>https://padc.obspm.fr/Commencer-l-integration-et-le-deploiement-continus-avec-Gitlab-CI-CD</link>
		<guid isPermaLink="true">https://padc.obspm.fr/Commencer-l-integration-et-le-deploiement-continus-avec-Gitlab-CI-CD</guid>
		<dc:date>2021-08-26T15:46:50Z</dc:date>
		<dc:format>text/html</dc:format>
		<dc:language>en</dc:language>
		<dc:creator>Stephane Erard</dc:creator>



		<description>
&lt;p&gt;par Sonny Lion (CDD-IR, LESIA) &lt;br class='autobr' /&gt; GitLab est un outil permettant de g&#233;rer de bout en bout un projet de d&#233;veloppement. En plus du traditionnel d&#233;p&#244;t de code source, Gitlab offre de nombreuses fonctionnalit&#233;s comme un syst&#232;me de suivi de bugs (ou issues), un h&#233;bergement de pages web statiques (HTML/CSS/JS), un Wiki et surtout la possibilit&#233; de faire de l'int&#233;gration et du d&#233;ploiement/distribution continus. &lt;br class='autobr' /&gt;
L'int&#233;gration continue permet d'ex&#233;cuter automatiquement un ensemble de scripts pour tester et (...)&lt;/p&gt;


-
&lt;a href="https://padc.obspm.fr/-seminars-" rel="directory"&gt;Seminars&lt;/a&gt;


		</description>


 <content:encoded>&lt;div class='rss_chapo'&gt;&lt;p&gt;par Sonny Lion (CDD-IR, LESIA)&lt;/p&gt;&lt;/div&gt;
		&lt;div class='rss_texte'&gt;&lt;p&gt;GitLab est un outil permettant de g&#233;rer de bout en bout un projet de d&#233;veloppement. En plus du traditionnel d&#233;p&#244;t de code source, Gitlab offre de nombreuses fonctionnalit&#233;s comme un syst&#232;me de suivi de bugs (ou issues), un h&#233;bergement de pages web statiques (HTML/CSS/JS), un Wiki et surtout la possibilit&#233; de faire de l'int&#233;gration et du d&#233;ploiement/distribution continus.&lt;/p&gt;
&lt;p&gt;L'int&#233;gration continue permet d'ex&#233;cuter automatiquement un ensemble de scripts pour tester et valider les modifications apport&#233;es au code source et de s'assurer que tout fonctionne avant de fusionner ces modifications avec la branche principale et de les d&#233;ployer en production.&lt;/p&gt;
&lt;p&gt;La distribution continue et le d&#233;ploiement continu poussent encore plus loin l'automatisation en ajoutant une ou plusieurs &#233;tapes visant par exemple &#224;:
&lt;br /&gt;&lt;span class=&#034;spip-puce ltr&#034;&gt;&lt;b&gt;&#8211;&lt;/b&gt;&lt;/span&gt; d&#233;ployer automatiquement les mises &#224; jour sur l'environnement de production; &lt;br /&gt;&lt;span class=&#034;spip-puce ltr&#034;&gt;&lt;b&gt;&#8211;&lt;/b&gt;&lt;/span&gt; ou encore envoyer la derni&#232;re version de votre package sur votre h&#233;bergeur favori (Pypi, npm, Docker Hub, etc.).&lt;/p&gt;
&lt;p&gt;Ces automatisations permettent de d&#233;tecter les bugs et les erreurs plus facilement tout en garantissant que tout code d&#233;ploy&#233; en production a &#233;t&#233; valid&#233; et est conforme &#224; vos exigences.&lt;/p&gt;
&lt;p&gt;L'id&#233;e de cette pr&#233;sentation est de voir comment construire un pipeline d'int&#233;gration et de d&#233;ploiement continus avec GitLab en partant d'un projet contenant quelques fichiers sources ainsi que quelques tests et en d&#233;taillant chaque &#233;tape du processus.&lt;/p&gt;
&lt;p&gt;&lt;a href=&#034;https://padc.obspm.fr/sites/padc/IMG/pdf/20210915_gitlab_ci_cd.pdf&#034;&gt;Diapos&lt;/a&gt;&lt;br class='autobr' /&gt;
&lt;a href=&#034;https://astrotube.obspm.fr/w/vcnvZg5Vx39siFVQAbFt1Z&#034; class='spip_out' rel='external'&gt;Video&lt;/a&gt;&lt;/p&gt;&lt;/div&gt;
		
		</content:encoded>


		
		<enclosure url="https://padc.obspm.fr/sites/padc/IMG/pdf/20210915_gitlab_ci_cd.pdf" length="2430721" type="application/pdf" />
		

	</item>
<item xml:lang="en">
		<title>ASOV 2019 annual meeting </title>
		<link>https://padc.obspm.fr/ASOV-2019-annual-meeting</link>
		<guid isPermaLink="true">https://padc.obspm.fr/ASOV-2019-annual-meeting</guid>
		<dc:date>2019-03-18T15:13:18Z</dc:date>
		<dc:format>text/html</dc:format>
		<dc:language>en</dc:language>
		<dc:creator>Stephane Erard</dc:creator>



		<description>
&lt;p&gt;3-4 April (full day + morning)
&lt;br class='autobr' /&gt;
Followed by a &#034;Semi-Hack-a-Thon&#034; technical forum (4/4 afternoon techniques, and 5/4) Will take place at IAP, 98bis Boulevard Arago, Paris 14. &lt;br class='autobr' /&gt;
Details and programme here: http://www.france-ov.org/twiki/bin/view/ASOVFrance/Reunion2019 http://www.france-ov.org/twiki/bin/view/JOURNEESSpecifiques/Semi-Hack-a-Thon5 &lt;br class='autobr' /&gt;
Registration required on ASOV web site (March 20 at the (...)&lt;/p&gt;


-
&lt;a href="https://padc.obspm.fr/-workshops-" rel="directory"&gt;Workshops&lt;/a&gt;


		</description>


 <content:encoded>&lt;div class='rss_texte'&gt;&lt;p&gt;3-4 April (full day + morning)&lt;br class='autobr' /&gt;
Followed by a &#034;Semi-Hack-a-Thon&#034; technical forum (4/4 afternoon techniques, and 5/4) Will take place at IAP, 98bis Boulevard Arago, Paris 14.&lt;/p&gt;
&lt;p&gt;Details and programme here: &lt;br class='manualbr' /&gt;&lt;a href=&#034;http://www.france-ov.org/twiki/bin/view/ASOVFrance/Reunion2019&#034; class='spip_url spip_out auto' rel='nofollow external'&gt;http://www.france-ov.org/twiki/bin/view/ASOVFrance/Reunion2019&lt;/a&gt;&lt;br class='manualbr' /&gt;&lt;a href=&#034;http://www.france-ov.org/twiki/bin/view/JOURNEESSpecifiques/Semi-Hack-a-Thon5&#034; class='spip_url spip_out auto' rel='nofollow external'&gt;http://www.france-ov.org/twiki/bin/view/JOURNEESSpecifiques/Semi-Hack-a-Thon5&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;Registration required on ASOV web site (March 20 at the latest).&lt;/p&gt;&lt;/div&gt;
		
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	</item>
<item xml:lang="en">
		<title>Discovery of intermediate-mass black holes with the Virtual Observatory </title>
		<link>https://padc.obspm.fr/Discovery-of-intermediate-mass-black-holes-with-the-Virtual-Observatory</link>
		<guid isPermaLink="true">https://padc.obspm.fr/Discovery-of-intermediate-mass-black-holes-with-the-Virtual-Observatory</guid>
		<dc:date>2019-02-12T17:23:44Z</dc:date>
		<dc:format>text/html</dc:format>
		<dc:language>en</dc:language>
		<dc:creator>Stephane Erard</dc:creator>



		<description>
&lt;p&gt;Par Igor Chilingarian (CfA, Harvard, USA) &lt;br class='autobr' /&gt; Nearly every massive galaxy harbors a supermassive black hole (SMBH) in its nucleus. SMBH masses are millions to billions of solar mass, and they correlate with properties of spheroids of their host galaxies. While the SMBH growth channels, mergers, and gas accretion are well established, their origin remains uncertain: they could have emerged either from massive &#8220;seeds&#8221; (105&#8211;106 M&#8857;) formed by direct collapse of gas clouds in the early universe or (...)&lt;/p&gt;


-
&lt;a href="https://padc.obspm.fr/-seminars-" rel="directory"&gt;Seminars&lt;/a&gt;


		</description>


 <content:encoded>&lt;div class='rss_chapo'&gt;&lt;p&gt;Par Igor Chilingarian (CfA, Harvard, USA)&lt;/p&gt;&lt;/div&gt;
		&lt;div class='rss_texte'&gt;&lt;p&gt;Nearly every massive galaxy harbors a supermassive black hole (SMBH) in its nucleus. SMBH masses are millions to billions of solar mass, and they correlate with properties of spheroids of their host galaxies. While the SMBH growth channels, mergers, and gas accretion are well established, their origin remains uncertain: they could have emerged either from massive &#8220;seeds&#8221; (10&lt;sup&gt;5&lt;/sup&gt;&#8211;10&lt;sup&gt;6&lt;/sup&gt; M&#8857;) formed by direct collapse of gas clouds in the early universe or from smaller (100 M&#8857;) BHs, end products of first stars. The latter channel would leave behind numerous intermediate-mass BHs (IMBHs, 10&lt;sup&gt;2&lt;/sup&gt;&#8211;10&lt;sup&gt;5&lt;/sup&gt; M&#8857;). Although many IMBH candidates have been identified, none are accepted as definitive; thus, their very existence is still debated. Using data mining in wide-field sky surveys and applying dedicated analysis to archival and follow-up optical spectra, we identified a sample of 305 IMBH candidates having masses 3&#215;10&lt;sup&gt;4&lt;/sup&gt; M&#559; &lt; M&lt;sub&gt;BH&lt;/sub&gt;&lt; 2&#215;10&lt;sup&gt;5&lt;/sup&gt; M&#559; , which reside in galaxy centers and are accreting gas that creates characteristic signatures of a type I active galactic nucleus (AGN). We confirmed the AGN nature of 10 sources (including five previously known objects that validate our method) by detecting the X-ray emission from their accretion disks, thus defining the first bona fide sample of IMBHs in galactic nuclei. All IMBH host galaxies possess small bulges and sit on the low-mass extension of the &lt;i&gt;M&lt;/i&gt;BH&lt;/i&gt;&lt;i&gt;&#8212;&lt;/i&gt;&lt;i&gt;M&lt;/i&gt;bulge&lt;/i&gt; scaling relation, suggesting that they must have experienced very few if any major mergers over their lifetime. The very existence of nuclear IMBHs supports the stellar-mass seed scenario of the massive BH formation.&lt;/p&gt;&lt;/div&gt;
		
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	</item>
<item xml:lang="en">
		<title>IPDA steering committee meeting 2019</title>
		<link>https://padc.obspm.fr/IPDA-steering-committee-meeting-2019</link>
		<guid isPermaLink="true">https://padc.obspm.fr/IPDA-steering-committee-meeting-2019</guid>
		<dc:date>2019-02-11T08:37:10Z</dc:date>
		<dc:format>text/html</dc:format>
		<dc:language>en</dc:language>
		<dc:creator>Stephane Erard</dc:creator>



		<description>
&lt;p&gt;The IPDA steering committee meeting 2019 will be held at Paris Observatory: 77 Avenue Denfert-Rochereau 75014 Paris. &lt;br class='autobr' /&gt;
8-10 mai 2019 Observatoire de Paris &lt;br class='autobr' /&gt; 8-10 mai 2019 &lt;br class='autobr' /&gt;
Directions &lt;br class='autobr' /&gt;
Registration
&lt;br class='autobr' /&gt;
IPDA web site&lt;/p&gt;


-
&lt;a href="https://padc.obspm.fr/-workshops-" rel="directory"&gt;Workshops&lt;/a&gt;


		</description>


 <content:encoded>&lt;div class='rss_chapo'&gt;&lt;p&gt;The IPDA steering committee meeting 2019 will be held at Paris Observatory: 77 Avenue Denfert-Rochereau 75014 Paris.&lt;/p&gt;
&lt;p&gt;8-10 mai 2019 Observatoire de Paris&lt;/p&gt;&lt;/div&gt;
		&lt;div class='rss_texte'&gt;&lt;p&gt;8-10 mai 2019&lt;/p&gt;
&lt;p&gt;&lt;a href=&#034;https://www.obspm.fr/acces-au-site-de-paris.html?lang=en&#034; class='spip_out' rel='external'&gt;&lt;strong&gt;Directions&lt;/strong&gt;&lt;/a&gt; &lt;br class='autobr' /&gt;
&lt;a href=&#034;https://indico.obspm.fr/e/ipda2019&#034; class='spip_out' rel='external'&gt;Registration&lt;/a&gt;&lt;br class='autobr' /&gt;
IPDA &lt;a href=&#034;https://planetarydata.org/&#034; class='spip_out' rel='external'&gt;web site&lt;/a&gt;&lt;/p&gt;&lt;/div&gt;
		
		</content:encoded>


		

	</item>
<item xml:lang="en">
		<title>IVOA Interop meeting, spring 2019</title>
		<link>https://padc.obspm.fr/IVOA-Interop-meeting-spring-2019</link>
		<guid isPermaLink="true">https://padc.obspm.fr/IVOA-Interop-meeting-spring-2019</guid>
		<dc:date>2018-11-19T17:10:10Z</dc:date>
		<dc:format>text/html</dc:format>
		<dc:language>en</dc:language>
		<dc:creator>Stephane Erard</dc:creator>



		<description>
&lt;p&gt;The IVOA Interop spring meeting 2019 will be held at Paris Observatory: 77 Avenue Denfert-Rochereau 75014 Paris. &lt;br class='autobr' /&gt; 12-17 May 2019 &lt;br class='autobr' /&gt;
Directions &lt;br class='autobr' /&gt;
Meeting web site here &lt;br class='autobr' /&gt;
Extra info on IVAO web site&lt;/p&gt;


-
&lt;a href="https://padc.obspm.fr/-workshops-" rel="directory"&gt;Workshops&lt;/a&gt;


		</description>


 <content:encoded>&lt;div class='rss_chapo'&gt;&lt;p&gt;The IVOA Interop spring meeting 2019 will be held at Paris Observatory: 77 Avenue Denfert-Rochereau 75014 Paris.&lt;/p&gt;&lt;/div&gt;
		&lt;div class='rss_texte'&gt;&lt;p&gt;12-17 May 2019&lt;/p&gt;
&lt;p&gt;&lt;a href=&#034;https://www.obspm.fr/acces-au-site-de-paris.html?lang=en&#034; class='spip_out' rel='external'&gt;&lt;strong&gt;Directions&lt;/strong&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;Meeting web site &lt;a href=&#034;https://indico.obspm.fr/event/64/&#034; class='spip_out' rel='external'&gt;here&lt;/a&gt; &lt;br class='autobr' /&gt;
Extra info on &lt;a href=&#034;http://wiki.ivoa.net/twiki/bin/view/IVOA/IvoaEvents&#034; class='spip_out' rel='external'&gt;IVAO web site&lt;/a&gt;&lt;/p&gt;&lt;/div&gt;
		
		</content:encoded>


		

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