[en] Direct plates in narrow bands (H , [0 NI], [S Ii]) and in the broad (B)-band show that the nebula surrounding the nova- like object HD 87643 is of reflective origin. Furthermore, a spectrogram of the filamentary condensation lying east-west at 17" north of HD 87643 reveals strong Balmer emission lines, with a P Cygni structure at H fl H e, as well as many diffuse emission lines of Fe II: such features essentially form a replica of the spectrum of the central object. These results and other arguments strongly support the idea that the reflection nebula surrounding HD 87643 is associated with the mass-outflow observed from the central hot star. Key words: reflection nebula - HD 87643 - mass-loss
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Surdej, Anna ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Surdej, Jean ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Swings, Jean-Pierre ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)