Context. Massive star evolution at low metallicity is closely connected to many fields in high-redshift astrophysics, but is poorly understood so far. Because...
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PublicationA dearth of young and bright massive stars in the Small Magellanic Cloud
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PublicationA deep look into the core of young clusters. II. λ-Orionis
Context: Over the past years, the λ-Orionis cluster has been a prime location for the study of young very low mass stars, substellar and isolated planetary mass...
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PublicationA deep look into the cores of young clusters. I. σ-Orionis
Context: Nearby young clusters are privileged places to study the star formation history. Over the last decade, the σ-Orionis cluster has been a prime location...
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PublicationA deep narrowband survey for planetary nebulae at the outskirts of M 33
Context. Planetary nebulae (PNe) are excellent tracers of stellar populations with low surface brightness, and therefore provide a powerful method to detect and...
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PublicationA deep search for the host galaxies of gamma-ray bursts with no detected optical afterglow
Context. Gamma-ray bursts (GRBs) can provide information about star formation at high redshifts. Even in the absence of a bright optical/near-infrared/radio...
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PublicationA deep wide-field optical survey in the young open cluster Collinder 359
We present the first deep, optical, wide-field imaging survey of the young open cluster Collinder 359, complemented by near-infrared follow-up observations...
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PublicationA deeper view of the CoRoT-9 planetary system. A small non-zero eccentricity for CoRoT-9b likely generated by planet-planet scattering
CoRoT-9b is one of the rare long-period (P = 95.3 days) transiting giant planets with a measured mass known to date. We present a new analysis of the CoRoT-9...
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PublicationA detailed analysis of the Gl 486 planetary system
Context. The Gl 486 system consists of a very nearby, relatively bright, weakly active M3.5 V star at just 8 pc with a warm transiting rocky planet of about 1.3...
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PublicationA detailed non-LTE analysis of LB-1: Revised parameters and surface abundances
Context. It has recently been proposed that LB-1 is a binary system at 4 kpc consisting of a B-type star of 8 M ☉ and a massive stellar black hole (BH) of 70 M...