Multiplicity and the Nature of Companions in Herbig Ae/Be Systems

Details Multiplicity and the Nature of Companions in Herbig Ae/Be Systems Multiplicity and the Nature of Companions in Herbig Ae/Be Systems

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20910511r&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #105.11; Bulletin of the American Astronomical Society,

Astronomy and Astrophysics

Astronomy

Scientific paper

Multiplicity of young stars as a function of stellar mass provides critical constraints to models seeking to explain the star formation process as a function of mass and environment. While multiplicity studies of low mass T Tauri stars have been fairly exhaustive, a systematic study of Herbig Ae/Be (HAEBE) stars is still lacking. These intermediate mass young stars represent the "missing link" between the T Tauris and the elusive high mass young stars, for which the star formation process is still not well understood.
We present further results of our ongoing near-infraed imaging and spectroscopy study. Our results show that the companions of Herbig Ae/Be stars are not typically classical T Tauri stars. Of those studied so far, most early type (Be) primary stars have similar early type companions. Later type (Ae and Fe) HAEBEs are more likely to have low mass companions, however these companion stars often lack emission lines and so appear to be different than the typical classical T Tauri population. New binary candidates are presented and various characteristics of the companions as a function of primary mass are presented and discussed.

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