Igniting stars, crafting planets: The multiscale journey of star and planet formation

Session

Molecular clouds and stellar clusters: Formation and evolution of stellar cradles

13 Jul 2026, 15:00

Tarragona

2. The sites of star formation: deciphering the structure and evolution of molecular clouds and stellar clusters (INVITED REVIEW)

Josefa Großschdel

13/07/2026, 15:00

Stars do not form in isolation - they are part of stellar clusters, which are themselves often part of larger stellar associations (OB associations) of families of clusters. These stellar populations are born within molecular clouds, the coldest and densest parts of the interstellar medium in galaxies. A key aspect of modern star formation research is our growing ability to map the molecular...

3. VOLS: a radio census of the young stellar population in Orion (INVITED JUNIOR)

Elena Diaz-Marquez

13/07/2026, 15:25

The early stages of star formation involve a balance between accretion and ejection of material during gravitational collapse. Understanding this interplay is crucial for determining the final properties of stars and their planetary systems. Orion A, the closest star-forming complex, hosts a wide range of environments containing protostars and young stellar objects of different masses and...

4. The VLA Orion A Large Survey: A New Window into the Evolution of Irradiated Disks (CONTRIBUTED)

Julia Blonk, Gemma Busquet

13/07/2026, 15:40

We present multi-epoch 6 GHz radio continuum observations of approximately 100 known proplyds in the Orion Nebula Cluster (ONC) obtained with the Karl G. Jansky Very Large Array as part of the VLA Orion A Large Survey (VOLS). VOLS is the first radio survey to cover a large area of Orion A at subarcsecond resolution, improving sensitivity by a factor of 20 over previous surveys. Protoplanetary...

5. Radio Continuum and Recombination Lines in Orion Proplyds (CONTRIBUTED)

Alex Munte-Perez

13/07/2026, 15:55

The Orion Nebula Cluster hosts more than 200 protoplanetary disks (proplyds) identified at optical, infrared and radio wavelengths, exposed to the intense ultraviolet radiation from nearby massive stars. These objects provide a unique laboratory to investigate externally photoevaporated disks and the impact of massive stars on planet-forming environments. Recent ALMA observations have enabled...

6. Disk dust mass evolution in the Scorpius–Centaurus OB association (CONTRIBUTED)

Nil Jara, Nuria Miret-Roig

13/07/2026, 16:10

Understanding how protoplanetary disks deplete their solid reservoirs is a central question in planet formation, since disk evolution sets the timescale over which planets can assemble. Constraining this process requires large homogeneous samples of disks with reliable stellar ages. We revisit the disk dust mass evolution in the Scorpius–Centaurus (Sco–Cen) OB association, the nearest OB...

7. Comparing photometric classifiers for YSOs: traditional schemes vs. Machine Learning (CONTRIBUTED)

Elisa Nespoli

13/07/2026, 16:25

In this work we evaluate the performance of several techniques for identifying young stellar objects (YSOs) using photometric data from the WISE and 2MASS surveys. We apply the color–based classification scheme proposed by Koenig & Leisawitz (2014) and compare it with multiple Machine Learning approaches, including K-Nearest Neighbours, Support Vector Classifier, Gradient Boosting, and in...

8. The substellar population of the most massive young clusters in the Milky Way with JWST (CONTRIBUTED)

Victor Almendros-Abad

13/07/2026, 16:40

Understanding the formation and evolution of young stars and clusters requires exploring a wide range of environments, from low-density star-forming regions to the most massive stellar nurseries in the Milky Way. As part of the EWOCS (Extended Westerlund 1 and 2 Open Clusters Survey) project, we have used the unprecedented sensitivity of JWST/NIRCam to study, for the first time, the substellar...

9. Perspectivas topológicas y geométricas en la distribución espacial de objetos jóvenes en regiones de formación estelar (FLASH TALK)

Marta Gonzalez Garcia

13/07/2026, 16:55

La distribución de objetos jóvenes en regiones de formación estelar es compleja, ya que muestra estructuras a múltiples escalas espaciales asociadas a distintos procesos físicos. Las técnicas de análisis topológico de datos, y en especial los diagramas de persistencia, integran eficazmente la información multiescala y describen de forma natural diversos tipos de estructuras relevantes para la...

10. Probing the Physical Evolution and Feedback in the G14.225–0.506 Hub-Filament System with SMA (FLASH TALK)

Alexia Anguera-Gonzalez

13/07/2026, 16:57

The transition from cold, dense gas to high-mass protostars involves complex physical processes that occur at various scales. In this contribution, we present new Submillimeter Array (SMA) 1.3 mm continuum and molecular line observations of the G14.225–0.506 hub–filament system, designed to characterize the physical evolution and fragmentation of its protostellar cores. At the angular...