LSS 3074: a cornerstone in the study of the transition between O stars and WR stars

Details LSS 3074: a cornerstone in the study of the transition between O stars and WR stars LSS 3074: a cornerstone in the study of the transition between O stars and WR stars

Feb 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999noao.prop...67r&link_type=abstract

NOAO Proposal ID #1999A-0067

Physics

Scientific paper

LSS 3074 (O4f^+ + O6-7(f)) is an eclipsing binary (P=2.18 days) harboring one of the rare O4f^+ stars. These objects are rare because they represent a short-lived but extremely important phase in the evolution of massive stars during which the wind physics changes from that of a normal O star to that of a WR star. Taking advantage of a recently developed code, observing this system will allow us to investigate the interactions between its components and will thus provide constraints on the dynamical properties of their stellar winds. These data will provide an important complement to the observations with the forthcoming XMM satellite (GT programme). In the same context, we further intend to study the stellar content of the poorly known open cluster Hogg 15 that will also be observed within the XMM-GT.

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