Publicación
Hα spectropolarimetry of RY Tauri and PX Vulpeculae
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...
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PublicaciónHα spectropolarimetry of the B[e] supergiant GG CarinaeAims. We study the geometry of the circumstellar environment of the B[e] supergiant star GG Car. Methods: We present observations acquired using the IAGPOL...
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CharlaImaging polarimetry of circumstellar environments. Science Results of ExPoExPo is an imaging polarimeter that has been built in Utrecht University. ExPo works in the visible, and it combines the dual-beam technique, together with very...
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PublicaciónInfrared spectroscopy of fullerene C60/anthracene adductsRecent Spitzer Space Telescope observations of several astrophysical environments such as planetary nebulae, reflection nebulae and R Coronae Borealis stars...
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PublicaciónInfrared Study of Fullerene Planetary NebulaeWe present a study of 16 planetary nebulae (PNe) where fullerenes have been detected in their Spitzer Space Telescope spectra. This large sample of objects...
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PublicaciónInvestigating episodic mass loss in evolved massive stars: III. Spectroscopy of dusty massive stars in three northern galaxiesMass loss in massive stars is crucial to understanding how these stars evolve and explode. Despite increasing evidence of its importance, episodic mass loss...
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PublicaciónIRAS 17423-1755 (Hen 3-1475) Revisited: An O-rich High-mass Post-asymptotic Giant Branch StarThe high-resolution (R ~ 600) Spitzer/IRS spectrum of the bipolar protoplanetary nebula (PN) IRAS 17423-1755 is presented in order to clarify the dominant...
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PublicaciónJWST observations of the Ring Nebula (NGC 6720) – II. PAH emissionPolycyclic aromatic hydrocarbons (PAHs) and carbonaceous dust have been observed in clumpy circumstellar environments, yet their formation and evolutionary...
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PublicaciónJWST observations of the Ring Nebula (NGC 6720): I. Imaging of the rings, globules, and arcsWe present JWST images of the well-known planetary nebula NGC 6720 (the Ring Nebula), covering wavelengths from 1.6 to 25 $\, \mu$m. The bright shell is...