HD 93129A at different radio scales
P. Benaglia ... [et al.].
Serie: Trabajos publicados del IAR ; no. 1016
Resumen: Recent observations toward the O2 If* star HD 93129A have revealed important non-thermal radio emission, and that it has an early O companion 140 AU away if at 2.5 kpc (FGS-HST data). These facts strongly support the possibility of a massive stars wind-collision region as the acceleration site of the synchrotron-emitting relativistic electrons. We have carried out LBA VLBI observations at 2.37 GHz to resolve the non-thermal source, and search for a bow-shock shape, typical of a wind-collision region. Preliminary results are presented here
Publicado en
Revista mexicana de astronomía y astrofísica. Serie de conferencias. ISSN 1405-2059 — Vol. 38, (2010), p. 41-43.