484 citations
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11 papers · 1 filter
HST/COS Detection of the Spectrum of the Subdwarf Companion of KOI-81
Rachel A. Matson, Douglas R. Gies, Zhao Guo +5
KOI-81 is a totally eclipsing binary discovered by the Kepler mission that consists of a rapidly rotating B-type star and a small, hot companion. The system was forged through larg…
Molecule sublimation as a tracer of protostellar accretion: Evidence for accretion bursts from high angular resolution C18O images
Jes K. Jorgensen, Ruud Visser, Jonathan P. Williams +1
The accretion histories of embedded protostars are an integral part of descriptions of their physical and chemical evolution. In particular, are the accretion rates smoothly declin…
Chemical tracers of episodic accretion in low-mass protostars
Ruud Visser, Edwin A. Bergin, Jes K. Jorgensen
Aims: Accretion rates in low-mass protostars can be highly variable in time. Each accretion burst is accompanied by a temporary increase in luminosity, heating up the circumstellar…
Systematic characterisation of the Herschel SPIRE Fourier Transform Spectrometer
R. Hopwood, E. T. Polehampton, I. Valtchanov +17
A systematic programme of calibration observations was carried out to monitor the performance of the SPIRE FTS instrument on board the Herschel Space Observatory. Observations of p…
Detection of glycolaldehyde towards the solar-type protostar NGC1333 IRAS2A
Audrey Coutens, Magnus V. Persson, Jes K. Jørgensen +2
Glycolaldehyde is a key molecule in the formation of biologically relevant molecules such as ribose. We report its detection with the Plateau de Bure interferometer towards the Cla…
A new view on exoplanet transits: Transit of Venus described using three-dimensional solar atmosphere Stagger-grid simulations
A. Chiavassa, C. Pere, M. Faurobert +5
Stellar activity and, in particular, convection-related surface structures, potentially cause fluctuations that can affect the transit light curves. Surface convection simulations…