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#protoplanetarydisks

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Dr. Juande Santander-Vela<p>Of course all of this builds on the initial success from the original ALMA long-baseline campaing that looked at HL Tau and found its protoplanetary disk in all its glory…</p><p><a href="https://www.almaobservatory.org/en/press-releases/revolutionary-alma-image-reveals-planetary-genesis/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">almaobservatory.org/en/press-r</span><span class="invisible">eleases/revolutionary-alma-image-reveals-planetary-genesis/</span></a></p><p> <a href="https://astrodon.social/tags/ALMA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ALMA</span></a> <a href="https://astrodon.social/tags/AtacamaLargeMillimeterSubmillimeterArray" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>AtacamaLargeMillimeterSubmillimeterArray</span></a> <a href="https://astrodon.social/tags/AtacamaLargeMillimeterArray" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>AtacamaLargeMillimeterArray</span></a> <a href="https://astrodon.social/tags/ProtoplanetaryDisks" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ProtoplanetaryDisks</span></a> <a href="https://astrodon.social/tags/PlanetFormation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PlanetFormation</span></a> <a href="https://astrodon.social/tags/YoungStars" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>YoungStars</span></a> <a href="https://astrodon.social/tags/YoungSolarSystems" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>YoungSolarSystems</span></a> <a href="https://astrodon.social/tags/HLTau" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HLTau</span></a></p>
Dr. Juande Santander-Vela<p>Using data from ALMA and advanced simulations, a research team led by Santiago Orcajo from the Instituto de Astrofísica de La Plata in Argentina (CONICET and Universidad Nacional de La Plata) has presented a new model that traces the evolution of protoplanetary disks through five distinct stages. The results strongly support a planet-driven origin of these substructures and offer new insights into how planets interact with the disks in which they form.</p><p>Stage I: Very young disks with shallow or no obvious substructures, corresponding to an epoch in which protoplanets are not massive enough to carve noticeable gaps in the disks.</p><p>Stage II: Disks with relatively narrow, but clear gaps and rings, indicating the growth of protoplanets</p><p>Stage III: A rapid widening of the gaps due to the sudden growth in the mass of some planets when they acquire their gaseous envelopes. This stage includes the rapid accumulation of dust at the outer edges of the gaps (the inner rims of the outer disks) due to the strong “pressure bumps” caused by the giant planets that recently formed, which stops the inward drift of dust.</p><p>Stage IV: Dust filtration at the edges of the cavities, resulting in dust-depleted inner disks. The millimeter dust from the outer disks efficiently drifts in and accumulates at the edges of the gaps.</p><p>Stage V: Eventually, the dusty inner disks drain completely onto the stars, and the outer disks become narrow rings (or collections of narrow rings).</p><p>More info: <a href="https://www.almaobservatory.org/en/press-releases/alma-inspires-new-models-for-the-evolution-of-planet-forming-disks/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">almaobservatory.org/en/press-r</span><span class="invisible">eleases/alma-inspires-new-models-for-the-evolution-of-planet-forming-disks/</span></a></p><p><a href="https://astrodon.social/tags/ALMA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ALMA</span></a> <a href="https://astrodon.social/tags/AtacamaLargeMillimeterSubmillimeterArray" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>AtacamaLargeMillimeterSubmillimeterArray</span></a> <a href="https://astrodon.social/tags/AtacamaLargeMillimeterArray" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>AtacamaLargeMillimeterArray</span></a> <a href="https://astrodon.social/tags/ProtoplanetaryDisks" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ProtoplanetaryDisks</span></a> <a href="https://astrodon.social/tags/PlanetFormation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PlanetFormation</span></a> <a href="https://astrodon.social/tags/YoungStars" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>YoungStars</span></a> <a href="https://astrodon.social/tags/YoungSolarSystems" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>YoungSolarSystems</span></a></p>
Hacker News<p>Protoplanetary Disks Are Smaller Than Expected</p><p><a href="https://www.centauri-dreams.org/2025/04/04/protoplanetary-disks-are-smaller-than-expected/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">centauri-dreams.org/2025/04/04</span><span class="invisible">/protoplanetary-disks-are-smaller-than-expected/</span></a></p><p><a href="https://mastodon.social/tags/HackerNews" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HackerNews</span></a> <a href="https://mastodon.social/tags/ProtoplanetaryDisks" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ProtoplanetaryDisks</span></a> <a href="https://mastodon.social/tags/SmallerThanExpected" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SmallerThanExpected</span></a> <a href="https://mastodon.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astronomy</span></a> <a href="https://mastodon.social/tags/News" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>News</span></a> <a href="https://mastodon.social/tags/SpaceScience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceScience</span></a> <a href="https://mastodon.social/tags/CosmicFormation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CosmicFormation</span></a></p>
Daniel Fischer<p><a href="https://scicomm.xyz/tags/ProtoplanetaryDisks" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ProtoplanetaryDisks</span></a> around Sun-like Stars Appear to Live Longer When the Metallicity is Low: <a href="https://iopscience.iop.org/article/10.3847/1538-4357/ad7a63" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">iopscience.iop.org/article/10.</span><span class="invisible">3847/1538-4357/ad7a63</span></a> -&gt; NASA's Webb Finds Planet-Forming Disks Lived Longer in Early Universe: <a href="https://webbtelescope.org/contents/news-releases/2024/news-2024-135" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">webbtelescope.org/contents/new</span><span class="invisible">s-releases/2024/news-2024-135</span></a> and <a href="https://www.esa.int/Science_Exploration/Space_Science/Webb/Planet-forming_discs_lived_longer_in_early_Universe" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">esa.int/Science_Exploration/Sp</span><span class="invisible">ace_Science/Webb/Planet-forming_discs_lived_longer_in_early_Universe</span></a></p>
Ansgar Schmidt :verified:<p>The JWST Reveals New Things About How Planetary Systems Form <a href="https://www.universetoday.com/168825/the-jwst-reveals-new-things-about-how-planetary-systems-form/" rel="nofollow noopener noreferrer" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">universetoday.com/168825/the-j</span><span class="invisible">wst-reveals-new-things-about-how-planetary-systems-form/</span></a> <a href="https://mastodon.cloud/tags/lunarandplanetarylaboratory" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>lunarandplanetarylaboratory</span></a> <a href="https://mastodon.cloud/tags/jameswebbspacetelescope" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>jameswebbspacetelescope</span></a> <a href="https://mastodon.cloud/tags/protoplanetarydisks" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>protoplanetarydisks</span></a> <a href="https://mastodon.cloud/tags/nebularhypothesis" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>nebularhypothesis</span></a> <a href="https://mastodon.cloud/tags/planetformation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>planetformation</span></a> <a href="https://mastodon.cloud/tags/jwstnirspec" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>jwstnirspec</span></a> <a href="https://mastodon.cloud/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <a href="https://mastodon.cloud/tags/featured" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>featured</span></a> <a href="https://mastodon.cloud/tags/lpl" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>lpl</span></a></p>
Dr. Juande Santander-Vela<p>This goes well beyond what was expected from ALMA: for the first time, astronomers have been able to observe a disc around a young star in the Large Magellanic Cloud, a neighboring galaxy. It’s the first time such a disc has ever been found outside our galaxy, and is identical to those forming planets in our Milky Way.</p><p><a href="https://www.almaobservatory.org/en/press-releases/astronomers-discover-disc-around-star-in-another-galaxy-for-the-first-time/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">almaobservatory.org/en/press-r</span><span class="invisible">eleases/astronomers-discover-disc-around-star-in-another-galaxy-for-the-first-time/</span></a></p><p><a href="https://astrodon.social/tags/ALMA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ALMA</span></a> <a href="https://astrodon.social/tags/ALMAObservatory" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ALMAObservatory</span></a> <a href="https://astrodon.social/tags/RadioAstronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RadioAstronomy</span></a> <a href="https://astrodon.social/tags/ExtragalacticAstronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ExtragalacticAstronomy</span></a> <a href="https://astrodon.social/tags/ProtoplanetaryDisks" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ProtoplanetaryDisks</span></a> <a href="https://astrodon.social/tags/LMC" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>LMC</span></a> <a href="https://astrodon.social/tags/LargeMagellanicCloud" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>LargeMagellanicCloud</span></a></p>
Dr. Juande Santander-Vela<p>A followup toot with hashtags:</p><p><a href="https://astrodon.social/tags/ALMA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ALMA</span></a> <a href="https://astrodon.social/tags/Steam" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Steam</span></a> <a href="https://astrodon.social/tags/VideoGame" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>VideoGame</span></a> <a href="https://astrodon.social/tags/EducationalVideoGames" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>EducationalVideoGames</span></a> <a href="https://astrodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <a href="https://astrodon.social/tags/ProtoplanetaryDisks" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ProtoplanetaryDisks</span></a> <a href="https://astrodon.social/tags/UTFSM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>UTFSM</span></a> <a href="https://astrodon.social/tags/UAI" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>UAI</span></a> <a href="https://astrodon.social/tags/MacOS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>MacOS</span></a> <a href="https://astrodon.social/tags/Windows" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Windows</span></a></p>
Dr. Juande Santander-Vela<p>This was published early in October, but it is quite remarkable: DG Taurus has a very smooth proto-planetary disk, without any grooves, which means it is in an state prior to planet formation… </p><p>However, polarized observations showed some structure in the outer regions, which might be the beginning of planet formation!</p><p><a href="https://astrodon.social/tags/ALMA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ALMA</span></a> <a href="https://astrodon.social/tags/PlanetFormation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PlanetFormation</span></a> <a href="https://astrodon.social/tags/ProtoplanetaryDisks" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ProtoplanetaryDisks</span></a> <a href="https://astrodon.social/tags/Polarization" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Polarization</span></a></p>
Ansgar Schmidt :verified:<p>Some Star Systems Create a Planet Sandwich <a href="https://www.universetoday.com/162397/some-star-systems-create-a-planet-sandwich/" rel="nofollow noopener noreferrer" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">universetoday.com/162397/some-</span><span class="invisible">star-systems-create-a-planet-sandwich/</span></a> <a href="https://mastodon.cloud/tags/solarsystemformation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>solarsystemformation</span></a> <a href="https://mastodon.cloud/tags/protoplanetarydisks" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>protoplanetarydisks</span></a> <a href="https://mastodon.cloud/tags/planetaryformation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>planetaryformation</span></a> <a href="https://mastodon.cloud/tags/planetaryscience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>planetaryscience</span></a> <a href="https://mastodon.cloud/tags/protoplanets" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>protoplanets</span></a> <a href="https://mastodon.cloud/tags/planets" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>planets</span></a></p>
Ansgar Schmidt :verified:<p>Machine Learning is a Powerful Tool When Searching for Exoplanets <a href="https://www.universetoday.com/160003/machine-learning-is-a-powerful-tool-when-searching-for-exoplanets/" rel="nofollow noopener noreferrer" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">universetoday.com/160003/machi</span><span class="invisible">ne-learning-is-a-powerful-tool-when-searching-for-exoplanets/</span></a> <a href="https://mastodon.cloud/tags/atacamalargemillimeter" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>atacamalargemillimeter</span></a>/submillimeterarray <a href="https://mastodon.cloud/tags/artificialintelligence" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>artificialintelligence</span></a> <a href="https://mastodon.cloud/tags/protoplanetarydisks" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>protoplanetarydisks</span></a> <a href="https://mastodon.cloud/tags/extrasolarplanets" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>extrasolarplanets</span></a> <a href="https://mastodon.cloud/tags/machinelearning" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>machinelearning</span></a> <a href="https://mastodon.cloud/tags/planetformation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>planetformation</span></a> <a href="https://mastodon.cloud/tags/exoplanets" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>exoplanets</span></a> <a href="https://mastodon.cloud/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <a href="https://mastodon.cloud/tags/featured" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>featured</span></a> <a href="https://mastodon.cloud/tags/alma" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>alma</span></a></p>
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