146 citations · 388 across the 7 of their papers we have counts for
7 papers
Primeval very low-mass stars and brown dwarfs - II. The most metal-poor substellar object
Z. H. Zhang, D. Homeier, D. J. Pinfield +4
SDSS J010448.46+153501.8 has previously been classified as an sdM9.5 subdwarf. However, its very blue colour () suggests a much lower metallicity compared to…
Spectral energy distribution of M-subdwarfs: A study of their atmospheric properties
A. S. Rajpurohit, C. Reyle, F. Allard +5
Context. M-type subdwarfs are metal-poor low-mass stars and probe for the old populations in our Galaxy. Accurate knowledge of their atmospheric parameters and especially the compo…
Primeval very low-mass stars and brown dwarfs. I. Six new L subdwarfs, classification and atmospheric properties
Z. H. Zhang, D. J. Pinfield, M. C. Galvez-Ortiz +10
We have conducted a search for L subdwarf candidates within the photometric catalogues of the UKIRT Infrared Deep Sky Survey and Sloan Digital Sky Survey. Six of our candidates are…
First light of the VLT planet finder SPHERE. IV. Physical and chemical properties of the planets around HR8799
M. Bonnefoy, A. Zurlo, J. L. Baudino +63
The system of four planets around HR8799 offers a unique opportunity to probe the physics and chemistry at play in the atmospheres of self-luminous young (~30 Myr) planets. We rece…
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…
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…