The missing link in star formation

The ESO workshop on Herbig Ae/Be stars is dedicated to the formation and pre-main sequence evolution of intermediate-mass stars bridging the transition between the distinctly different scenarios for the formation of low and high-mass stars. Over the past 20 years, new instruments have opened up the milli-arcsecond and sub-milli-arcsecond spatial scales where the disk physics takes place and planetary formation processes occur. ALMA will complement spatially and advance spectrally at high resolution the connection between the inner disks and the outer, dusty disks as observed by space-based observatories. The workshop aims to elucidate the evolution of the circumstellar material from the formation phases, during the star’s PMS contraction, and into the dispersal and debris phases. Topics include (i) stellar interior and surface physics (ii) accretion/ejection (iii) disk evolution; (iv) the connection with debris disks and planet formation.

In particular, the 2014 ESO HAeBe workshop will highlight the different mechanisms prevalent in high and low-mass SF and the evolutionary link between star/planet birth and mature stellar/planetary systems. The high-resoluton observational and theoretical advances achieved in the past 10 to 15 years provide the motivation for this HAeBe workshop. The evolution of the circumstellar disk material is the emphasis but not the exclusive topic of the workshop.

The following will be addressed:

  • disk structure
  • accretion, its geometry and evolution
  • transitional disks and disk dispersal
  • young clusters, multiplicity and mass function
  • dust processing and grain growth
  • debris disks
  • jets and outflows
  • rotation and activity
  • ages, evolutionary status and stellar interiors
  • impact of future instruments