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HD144548: A young triply eclipsing system in the Upper Scorpius OB association
R. Alonso, H. J. Deeg, S. Hoyer +3
The star HD144548 (=HIP~78977; TYP~6212-1273-1) has been known as a detached eclipsing binary and a bona-fide member of the Upper Scorpius OB association. Continuous photometry fro…
VLT X-shooter spectroscopy of the nearest brown dwarf binary
N. Lodieu, M. R. Zapatero Osorio, R. Rebolo +3
The aim of the project is to characterise both components of the nearest brown dwarf sytem to the Sun, WISE J104915.57-531906.1 (=Luhman16AB) at optical and near-infrared wavelengt…
Optical spectroscopy of candidate Alpha Persei white dwarfs
S. L. Casewell, P. D. Dobbie, S. Geier +2
As part of an investigation into the high mass end of the initial mass-final mass relation we performed a search for new white dwarf members of the nearby (172.4 pc), young (80-90…
A search for lithium in metal-poor L dwarfs
N. Lodieu, A. J. Burgasser, Y. Pavlenko +1
The aim of the project is to search for lithium in absorption at 6707.8 Angstroms to constrain the nature and the mass of the brightest low-metallicity L-type dwarfs (refered to as…
Discovery of a young planetary mass companion to the nearby M dwarf VHS J125601.92-125723.9
Bartosz Gauza, Victor J. S. Béjar, Antonio Pérez-Garrido +5
In a search for common proper motion companions using the VISTA Hemisphere Survey and 2MASS catalogs we have identified a very red (J-Ks=2.47 mag) late-L dwarf companion of a previ…