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Weather on Other Worlds. II. Survey Results: Spots Are Ubiquitous on L and T Dwarfs
Stanimir Metchev, Aren Heinze, Dániel Apai +7
We present results from the "Weather on Other Worlds" Spitzer Exploration Science program to investigate photometric variability in L and T dwarfs, usually attributed to patchy clo…
Spectroscopic follow-up of L- and T-type proper-motion member candidates in the Pleiades
M. R. Zapatero Osorio, V. J. S. Béjar, E. L. Martín +9
(Abridged) We report on the near-infrared low-resolution spectroscopy and red optical (Z-band) photometry of seven proper-motion, very low-mass substellar member candidates of the…
Search for free-floating planetary-mass objects in the Pleiades
M. R. Zapatero Osorio, M. C. Gálvez Ortiz, G. Bihain +8
(Abridged) We aim at identifying the least massive population of the solar metallicity, young (120 Myr), nearby (133.5 pc) Pleiades star cluster with the ultimate goal of understan…
VISTA Variables in the Vía Láctea (VVV): Halfway Status and Results
Maren Hempel, Dante Minniti, István Dékány +89
The VISTA Variables in the Vía Láctea (VVV) survey is one of six public ESO surveys, and is now in its 4th year of observing. Although far from being complete, the VVV survey has a…
New constraints on the formation and settling of dust in the atmospheres of young M and L dwarfs
E. Manjavacas, M. Bonnefoy, J. E. Schlieder +7
We obtained medium-resolution near-infrared spectra of seven young M9.5-L3 dwarfs classified in the optical. We aim to confirm the low surface gravity of the objects in the NIR. We…
A global cloud map of the nearest known brown dwarf
I. J. M. Crossfield, B. Biller, J. E. Schlieder +9
Brown dwarfs -- substellar bodies more massive than planets but not massive enough to initiate the sustained hydrogen fusion that powers self-luminous stars -- are born hot and slo…