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6 papers · 2 filters
A new free-floating planet in the Upper Scorpius association
K. Peña Ramírez, V. J. S. Béjar, M. R. Zapatero Osorio
We report on a deep photometric survey covering an area of 1.17 deg in the young Upper Scorpius stellar association using VIMOS and UKIDSS data taking several years…
Parallax of the L4.5 dwarf 2M182114 from high-precision astrometry with OSIRIS at GTC
J. Sahlmann, P. F. Lazorenko, H. Bouy +4
We used the OSIRIS camera at the 10.4 m Gran Telescopio Canarias (GTC) to monitor the astrometric motion of the L4.5 dwarf 2M182114 over 17 months. The astrometric residuals of…
Hunting for brown dwarf binaries and testing atmospheric models with X-Shooter
E. Manjavacas, B. Goldman, J. M. Alcalá +7
The determination of the brown dwarf binary fraction may contribute to the understanding of the substellar formation mechanisms. Unresolved brown dwarf binaries may be revealed thr…
Rotational modulation of the linear polarimetric variability of the cool dwarf TVLM 51346546
P. A. Miles-Páez, M. R. Zapatero Osorio, E. Pallé
Aims: We aimed to monitor the optical linear polarimetric signal of the magnetized, rapidly rotating M8.5 dwarf TVLM 51346546. Methods: - and -band linear polarimetry imag…
Constraints on the substellar companions in wide orbits around the Barnard's Star from CanariCam mid-infrared imaging
B. Gauza, V. J. S. Béjar, R. Rebolo +6
We have performed mid-infrared imaging of Barnard's Star, one of the nearest stars to the Sun, using CanariCam on the 10.4 m Gran Telescopio Canarias. We aim to investigate an area…
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…