Boyajian's star is an apparently normal main-sequence F-type star with a very unusual light curve. The dipping activity of the star, discovered during the...
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PublicaciónHigh-resolution spectroscopy of Boyajian's star during optical dimming events
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PublicaciónHint of an exocomet transit in the CHEOPS light curve of HD 172555
HD 172555 is a young (~20 Myr) A7V star surrounded by a 10 au wide debris disk suspected to be replenished partly by collisions between large planetesimals...
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PublicaciónH{2}D+ line emission in Proto-Planetary Disks
Context: Previous studies have indicated that the 372.4 GHz ground transition of ortho-H2D+ might be a powerful probe of Proto-Planetary Disks. The line could...
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PublicaciónHα 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 Carinae
Aims. 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 ExPo
ExPo 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 adducts
Recent 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 Nebulae
We 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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PublicaciónIRAS 17423-1755 (Hen 3-1475) Revisited: An O-rich High-mass Post-asymptotic Giant Branch Star
The high-resolution (R ~ 600) Spitzer/IRS spectrum of the bipolar protoplanetary nebula (PN) IRAS 17423-1755 is presented in order to clarify the dominant...