5 papers
The Analysis of the Rotating Disk of some Southern Galactic B[e] Stars
Marcelo Borges Fernandes, H. J. G. L. M. Lamers, Michaela Kraus
The spectra of stars with the B[e] phenomenon are dominated by features that are related to physical conditions of circumstellar material around these objects and are not intrinsic…
The Evolutionary Stage of 5 Southern Galactic Unclassified B[e] Stars
Marcelo Borges Fernandes, Francisco X. de Araújo, H. J. G. L. M. Lamers
The spectra of stars with the B[e] phenomenon are dominated by features that are related to physical conditions of circumstellar material around these objects and are not intrinsic…
The radiation driven winds of rotating B[e] supergiants
Inti Pelupessy, Henny J. G. L. M. Lamers, Jorick S. Vink
We have formulated the momentum equation for sectorial line driven winds from rotating stars including: (a) the oblateness of the star, (b) gravity darkening (von Zeipel effect), (…
The 218 day period of the peculiar late B-type star HD 101584
Eric J. Bakker, Henny J. G. L. M. Lamers, L. B. F. M. Waters +1
We have searched for periodicity in the photometric and spectroscopic variations of the enigmatic star HD 101584 and found a long-term variability on a typical time scale of 1700 d…
Detection of C2, CN, and NaID absorption in the AGB remnant of HD56126
Eric J. Bakker, L. B. F. M. Waters, Henny J. G. L. M. Lamers +2
We present the detection of molecular absorption lines in the optical spectrum of the post-AGB star HD56126. The C2 Phillips A^{1}Π_{u}-X^{1}Σ^{+}_{g} (1,0), (2,0), and (3,0); Swan…