Star formation: from massive stars to brown dwarfs

Principal contact: D. Barrado ( )

Organisers: D. Barrado (LAEFF, Spain), P. Lucas (Hertfordshire, UK)

In recent years, observational data has become available for the most obscured parts of star forming complexes, the Infrared Dark Clouds and dense cores and clumps. This allows us to relate the clump mass function to the stellar initial mass function and constrains the physics of the steps in between. At the same time, much progress has been made in imaging examples of high mass protostars in the near infrared, while at the low mass end, a new field has been unveiled.

During the last years a large population of brown dwarfs have been uncovered that includes warmer, younger members of young stellar associations. In fact, at early stages these objects exhibit characteristics which resemble those observed in Classical T Tauri stars, including accreting disks and jets. Transition disks, characterized by infrared excesses at longer wavelengths probably due to a large hole, and disks around planetary mass objects, have been also observed. However, only a handful of Class I (embedded objects with an envelope) brown dwarf candidates (a proto-brown dwarf, caught in the act of formation) has been identified.

This session aims to review progress in these areas and consider the prospects for further progress that are offered by the suite of new large Galactic survey datasets that are becoming available at wavelengths from the optical to the radio as well as the new opportunities provided by the launch of the Herschel Space Observatory. The goal is to review the current situation of this very active field of research and discuss the opportunities offered by all new ground-based and space instrumentations.

Scientific Programme

Wednesday 22nd April Surveys
11:00 What is the Stellar Mass Function of Whole Galaxies? Peter Anders
11:20 Finding all Massive Young Stellar Objects in the Galaxy: the RMS Survey Rene Oudmaijer
11:40 Galaxy- Scale Star Formation with the Herschel Infrared Galactic Plane Survey Sergio Molinari
11:50 Infrared Dark Cloud Cores in the SCUBA Legacy Catalogue Harriet Parsons
12:00 A GMM-EM Algorithm to Search for Stellar Clusters in Large Databases David Samuel
12:10 The Gould Belt JCMT Legacy Survey Derek Ward-Thompson
12:20 High-Mass Star Formation with the JCMT and Herschel Galactic Plane Survey Toby Moore
Wednesday 22nd April High Mass - Low Mass
14:00 Spectral Energy Distributions of Methanol Maser and 8GHz Continuum Sources in Regions of Massive Star Formation Adam Avison
14:10 What Are Class II Methanol Masers Tracing? Mark Gallaway
14:20 Spectro- Astrometry of Herbig Ae/Be Binary Systems Hugh Wheelwright
14:30 Stellar Rotation at Young Ages: New Results from Corot's Monitoring of NGC 2264 Fabio Favata
14:50 The Low-Mass Initial Mass Function in the Young Cluster NGC 6611 Joanna Oliveira
15:10 Is the IMF universal? Latest results from the UKIDSS Galactic Clusters Nicolas Lodieu
15:20 A Photoevaporating Proto-Brown Dwarf in Orion? Philip Lucas
Wednesday 22nd April Low Mass - Models and Data
16:00 Three New Methane Dwarfs in the Star Forming Region IC 348 Andrew Burgess
16:10 The Formation of Brown Dwarfs and Low-Mass Stars by Disc Fragmentation; Theory vs Observations Dimitris Stamatellos
16:30 Star Formation Triggered by Expanding HII Regions Anthony Whitworth
16:40 Constraining the Kinematics of Serpens North Cluster: Comparison between (Sub)Millimetre Observations and SPH Simulations Ana Duarte Cabral
17:00 The Structure of Molecular Clouds Jonathan Rowles
17:10 Are Pre-Main-Sequence Stars Older than we Thought? Tim Naylor
Thursday 23rd April Models and Data
11:00 The Fragmentation of Expanding Shells Jan Palous
11:20 Using Molecular Complexity as Diagnostics of the Physical Characteristics of Low and High Mass Star Formation Serena Viti
11:40 Constraining Observables from Hydrodynamical Simulations of Prestellar Core Collapse Stefanie Walch
12:00 Non-LTE Molecular Line Imaging of SPH Cluster Simulations David Rundle
12:10 Discussion  

Poster Presentations

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