Discovery of a magnetic field in the O9 sub-giant star HD 57682 by the MiMeS Collaboration (2009)
Grunhut, J. H., Wade, G. A., Marcolino, W. L. F., Petit, V., Henrichs, H. F., Cohen, D. H., ...
We report the detection of a strong, organised magnetic field in the O9IV star HD 57682, using spectropolarimetric observations obtained with ESPaDOnS at the 3.6-m Canada-France-Hawaii Telescope...
Analysis of Galactic late-type O dwarfs: more constraints on the weak wind problem (2009)
Marcolino, W. L. F., Martins, F., Hillier, D. J., Lanz, T., Escolano, C.
We have investigated the stellar and wind properties of a sample of five late-type O dwarfs in order to address the weak wind problem. A grid of TLUSTY models was used to obtain the stellar...
WELS - Ultraviolet Spectra and Expanding Atmosphere Models (2008)
The ultraviolet spectra of all "weak emission line central stars of planetary nebulae" (WELS) with available IUE data is analyzed. We found that the WELS can be divided in three different groups...
The Ultraviolet Spectra of the Weak Emission Line Central Stars of Planetary Nebulae (2007)
Marcolino, W. L. F., De Araujo, F. X., Junior, H. B. M., Duarte, E. S.
The ultraviolet spectra of all ``weak emission line central stars of planetary nebulae'' (WELS) with available IUE data are presented and discussed. We performed line identifications, equivalent...
Spectroscopic analysis of two peculiar emission line stars: RJHA 49 and SS73 21 (2007)
Pereira, C. B., Marcolino, W. L. F., Machado, M., De Araujo, F. X.
Aims: To investigate the spectra and the evolutionary stages of two peculiar emission-line stars: RJHA 49 and SS73 21. Methods: We used low and high resolution optical data. Line identifications and...
Detailed Far-UV to Optical Analysis of Four [WR] Stars (2006)
Marcolino, W. L. F., Hillier, D. J., De Araujo, F. X., Pereira, C. B.
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 CMFGEN, we determined...