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

Session

Protoplanetary disks: Setting the seeds of planets

14 Jul 2026, 18:30

Tarragona

20. Dust evolution in protoplanetary disks: from grains to pebbles and planets (INVITED REVIEW)

Alvaro Ribas

14/07/2026, 18:30

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

14/07/2026, 18:55

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

14/07/2026, 19:10

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

14/07/2026, 19:25

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

14/07/2026, 19:27

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

15/07/2026, 16:00

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

15/07/2026, 16:15

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

15/07/2026, 16:30

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

15/07/2026, 16:45

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...