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

Session

Star formation: From darkness to light

14 Jul 2026, 16:00

Tarragona

11. Collapse of Dense Cores, Accretion Disks, and Jets: From Low- to High-Mass Protostars (INVITED REVIEW)

Ruben Fedriani

14/07/2026, 16:00

TBD

12. Bowshocks driven by the molecular jet of SVS 13 protostar (INVITED JUNIOR)

Guillermo Blazquez-Calero

14/07/2026, 16:25

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

14/07/2026, 16:40

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

14/07/2026, 16:55

? 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

14/07/2026, 16:57

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

14/07/2026, 17:30

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

14/07/2026, 17:45

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

14/07/2026, 18:00

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

14/07/2026, 18:15

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...