The mass, origin, and evolutionary stage of the binary system LB-1 have been intensely debated, following the claim that it hosts an ∼70M ☉ black hole, in stark...
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PublicationPhase-dependent Study of Near-infrared Disk Emission Lines in LB-1
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PublicationPHL 932 - Another non-post-AGB central star of planetary nebula
The very high surface gravity and low temperature of PHL 932, a hot subluminous star surrounded by a planetary nebula, imply that it cannot be a post-AGB star...
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PublicationPhysical parameters of the intermediate age open cluster IC 1311: Clues for the theory of stellar evolution
The results of a UBVR photometric study in the field of the open cluster IC 1311 are presented. A comparison with previously published results on NGC 7044...
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TalkPLANETARY PIECES: PUTING THE CLUES TOGETHER USING WHITE DWARFS
Planetary systems have been found systematically orbiting main sequence stars and red giants. But the detection of planets per se during the white dwarf phase...
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TalkPopulations of rotating stars
We will start by recalling the effects of rotation on stellar evolution and briefly explain its implementation in a stellar evolution code. We will present a...
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PublicationPosition-dependent infrared spectroscopy of M82 - 100,000 Orion nebulae?
It is reported that 8-13-micron spectra have been obtained at several positions across the extended emission region of M82. No major differences among the...
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PublicationPre-main sequence lithium burning. 1: Weak T Tauri stars
We report high-resolution spectroscopic observations for a sample of 38 T Tauri stars (TTS), complemented by UBVRI photometry of 13 TTS, and CCD VRI photometry...
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TalkProgenitors of recent core-collapse supernovae
Supernovae are at the heart of some of the most important problems of modern astronomy. To fully understand their importance and to enable their use as probes...
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PublicationPulsation in moderate rotating delta Scuti stars: The case of BN and BU CANCRI
The results reported in this paper concern two delta Scuties in the Praesepe cluster, namely BN Cnc and BU Cnc, observed during the 1992 STEPHI 4 campaign. Five...