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

Jul 13 – 15, 2026
Tarragona
Europe/Madrid timezone

Contribution List

27 / 27
2. The sites of star formation: deciphering the structure and evolution of molecular clouds and stellar clusters (INVITED REVIEW)
Josefa Großschdel
7/13/26, 3:00 PM

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
7/13/26, 3:25 PM

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
7/13/26, 3:40 PM

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
7/13/26, 3:55 PM

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
7/13/26, 4:10 PM

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
7/13/26, 4:25 PM

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
7/13/26, 4:40 PM

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
7/13/26, 4:55 PM

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
7/13/26, 4:57 PM

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...
11. Collapse of Dense Cores, Accretion Disks, and Jets: From Low- to High-Mass Protostars (INVITED REVIEW)
Ruben Fedriani
7/14/26, 4:00 PM

TBD
12. Bowshocks driven by the molecular jet of SVS 13 protostar (INVITED JUNIOR)
Guillermo Blazquez-Calero
7/14/26, 4:25 PM

We present high-angular and high-spectral resolution ALMA CO observations of the molecular jet driven by the outbursting protostar SVS 13. Thanks to the high sensitivity of these data, we are able to resolve faint shell-like structures connected to jet knots at their apex. The morphology and kinematics of these shells are in excellent agreement with predictions from an analytical bowshock...
13. Probing the innermost scales of a massive protostellar jet (CONTRIBUTED)
Josep Maria Masque
7/14/26, 4:40 PM

IRAS18162-2048 is a massive protostar located at a distance of 1.4 kpc that powers the largest and fastest protostellar jet known in the Galaxy. It has been the target of numerous studies as it constitutes a prime example for investigating the presence of disks and jets associated with high mass protostars. In this contribution I will present the results extracted from deep sub- arsecond...
14. Disentangling the role of nonlinear terms in δ Scuti oscillations (FLASH TALK)
Miriam Rodriguez Sanchez
7/14/26, 4:55 PM

? Scuti stars are variable stars with a complex power spectra in which numerous radial and nonradial modes are excited. Nonlinear contributions to the oscillations have generally not been taken into account, and most studies have remained within the linear regime due to the complexity involved. However, some approximations to nonlinear codes have been developed, mainly focused on RR Lyrae...
15. The formation of massive stars: An approach to model the accretion boundary layer using CLOUDY (FLASH TALK)
Benjamin Montesinos
7/14/26, 4:57 PM

The accretion processes in forming massive stars -more specifically those with M > 8 solar masses- are thought to be governed by the presence of a boundary layer close to the stellar surface and fed by the protoplanetary disk. This contrasts with the magnetospheric accretion mechanism that operates in T Tauri stars (see the contribution by Lucía Fullana in this symposium). Modelling such a...
16. Hydrogen recombination line masers: tracing disks, winds and jets in massive young stars (CONTRIBUTED)
Antonio Martinez-Henares
7/14/26, 5:30 PM

Jets and winds are the result of the conservation of angular momentum in forming stars. How these components are launched and how they impact the gas within the innermost regions of these objects remains vastly unknown, specially in the case of the rare and distant massive stars. MWC 349A is a massive star that presents a circumstellar disk which rotates following a Keplerian law, and an...
17. How massive stars grow? Deriving mass accretion rates of massive young stellar objects (CONTRIBUTED)
Lucia Fullana Garcia
7/14/26, 5:45 PM

Although massive stars ( >8M_sun) are rare, they play a key role in the chemical and dynamical evolution of galaxies through their radiation, stellar winds, and supernova explosions. However, the physical mechanisms that govern their formation remain poorly understood. Unlike low-mass stars, whose growth is well described by the magnetospheric accretion scenario by which material is channeled...
18. Radial differential rotation leading to dipole collapse in pre-main-sequence stars (CONTRIBUTED)
Anna Guseva
7/14/26, 6:00 PM

Despite significant progress in observing stellar magnetic fields, the physical processes that determine their strength and structure - likely shaped by their formation history - remain poorly understood. During the pre-main-sequence (PMS) phase, a star’s inner layers contract, gradually forming a radiative core, while its convective envelope slows due to magnetic interactions with the...
19. A new population of Gamma-Loud Protostars (CONTRIBUTED)
Javier Mendez-Gallego
7/14/26, 6:15 PM

Massive young stellar objects (YSOs) are active engines driving powerful outflows. Theoretical models predict that a fraction of the accreted material is ejected in the form of highly collimated, fast jets and outflows. The injection of mechanical energy by these jets into the interstellar medium (ISM) produces strong shocks that can accelerate non-thermal particles and trigger feedback...
20. Dust evolution in protoplanetary disks: from grains to pebbles and planets (INVITED REVIEW)
Alvaro Ribas
7/14/26, 6:30 PM

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...
21. (Sub-)Millimeter Scattering by Porous Dust Particles in Protoplanetary Disks (INVITED JUNIOR)
Gonzalo Vargas Pelaez
7/14/26, 6:55 PM

Interpreting (sub-)millimeter observations of protoplanetary disks requires robust constraints on dust growth, yet the maximum grain size inferred from polarization often differ from those derived from continuum spectral slopes. This contribution presents numerical light-scattering calculations to assess whether particle porosity and morphology can help alleviate this discrepancy. Two dust...
22. Deep learning on mid-resolution spectra unveils stellar characterization of young, accreting systems (CONTRIBUTED)
Katia Gkimisi
7/14/26, 7:10 PM

Circumstellar disk evolution and planet formation are closely linked to accretion processes and to the environments where young stars form. In this work, we combine observational and methodological advances to quantify how clustered environments and early protostellar phases regulate accretion and, ultimately, the planet-forming potential of disks. First, we studied external photoevaporation...
23. Determinación de los parámetros de tránsitos exoplanetarios usando técnicas de Machine Learning. (FLASH TALK)
Charan Herraiz Escale
7/14/26, 7:25 PM

El Telescopio Espacial Kepler de la NASA (2009-2018) marcó el comienzo de lo que podríamos llamar la era “moderna” de la caza de planetas. Kepler estaba esperando captar pequeñas caídas en la cantidad de luz proveniente de estrellas individuales a lo largo de un cierto periodo de tiempo (curva de luz), causadas por planetas que cruzan frente a ellas. Esto se llama "método de tránsito". Una vez...
24. Tracing massive star formation through chemical complexity (FLASH TALK)
Aitana Tasa-Chaveli
7/14/26, 7:27 PM

Massive star-forming regions host a wide range of physical processes that shape the early stages of stellar and planetary system formation. Studying these environments provides key insights into how stars form and evolve under conditions similar to those in which the Sun is thought to be born. In particular, protostellar disks represent a crucial stage in which physical conditions regulate the...
25. Lithium study of the early evolution of intermediate-mass stars with protoplanetary disks (CONTRIBUTED)
Ignacio Mendigutia
7/15/26, 4:00 PM

I will present our recent work (Mendigutía et al. A&A, submitted) on the surface lithium (Li) content of young intermediate-mass stars surrounded by protoplanetary disks, which constitutes the most complete Li analysis and dataset for “Intermediate-mass T Tauri” and “Herbig” stars to date. The Li content is a direct probe of stellar mixing and empirically constrains the transition from...
26. Hints of Disk Substructure in the First Brown Dwarf with a Dynamical Mass Constraint (CONTRIBUTED)
Alejandro Santamaria Miranda
7/15/26, 4:15 PM

We present high-resolution ALMA observations of the Class II brown dwarf 2MASS J04442713+2512164 (2M0444), one of the brightest and best-studied BD disks. Our 0.89 mm continuum and 12CO (3–2) line data reach a spatial resolution of 0.046 arcsec (~6.4 au), enabling the first dynamical mass measurement in the substellar regime from ALMA data. We constrain the central mass to 0.043–0.092 Msun,...
27. Planet-disc interaction models across wavelengths (CONTRIBUTED)
Claudia Toci
7/15/26, 4:30 PM

Protoplanetary discs are the birthplace of planets and the site in which they accrete and evolve. It is then fundamental to characterize their evolution to fully understand the emerging exoplanetary population. Substructures in protoplanetary discs – such as rings, gaps, spirals – are routinely detected within discs using all the available tracers and represent key tracers of ongoing...
28. Searching for radio signatures of Star–Planet Interactions in T Tauri systems (CONTRIBUTED)
Archer Alias Saura
7/15/26, 4:45 PM

Star-planet interaction (SPI) signatures in young stellar systems offer a unique window into the magnetic environment of planetary systems. In this work, we present a systematic search for SPI-related radio emission in a sample of ~7,000 T Tauri stars. By crossmatching these targets with the LOFAR Two-metre Sky Survey (LoTSS, 144 MHz) and the VLA Sky Survey (VLASS, 2–4 GHz), we investigate the...
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