51 citations · 54 across the 4 of their papers we have counts for
6 papers
Hαspectropolarimetry of RY Tau and PX Vul
A. Pereyra, A. M. Magalhães, F. X. de Araújo
Aims: To detect line effects using spectropolarimetry in order to find evidence of rotating disks and their respective symmetry axes in T Tauri stars. Methods: We used the IAGPOL i…
On the hydrogen neutral outflowing disks of B[e] supergiants
Michaela Kraus, Marcelo Borges Fernandes, Francisco X. de Araujo
(abridged) B[e] supergiants are known to possess geometrically thick dusty disks. Disk-forming wind models have, however, been found to be insufficient in reproducing the observed…
Detailed Far-UV to Optical Analysis of Four [WR] Stars
W. L. F. Marcolino, D. J. Hillier, F. X. de Araujo +1
We present far-UV to optical analyses of four hydrogen deficient central stars of planetary nebulae: BD+303639, NGC 40, NGC 5315 and NGC 6905. Using the radiative transfer code CMF…
The optical and IR properties of southern galactic unclB[e] stars: The case of CD-42 11721
Marcelo Borges Fernandes, Silvia Lorenz Martins, Michaela Kraus +1
(abridged) In this work we present the results of an optical and IR study for the curious B[e] star CD-42 11721. This object has a doubtful evolutionary stage, being either a pre-m…
The enigmatic B[e]-star Henize 2-90: The non-spherical mass loss history from an analysis of forbidden lines
Michaela Kraus, Marcelo Borges Fernandes, Francisco X. de Araujo +1
(abridged) We study the optical spectrum of the exciting B[e] star Hen 2-90 based on new high-resolution observations that cover the innermost 2". Our investigation is splitted in…
The enigmatic B[e] star Hen 2-90 -- an interacting binary?
Michaela Kraus, Marcelo Borges Fernandes, Francisco X. de Araujo
We present the enigmatic galactic unclassified B[e] star Hen 2-90. Its optical spectrum is discussed and analysed in terms of the forbidden emission lines coming from a non-spheric…