79 citations · 157 across the 4 of their papers we have counts for
5 papers
Starspots on weak-lined T Tauri stars in the sigma Orionis cluster
Andrew J. Wilson, Darryl J. Sergison, Tim Naylor +1
The light curves and spectra of T Tauri stars indicate the presence of cool starspots covering large areas of their photospheres. Heavily spotted stars should have a larger mid-inf…
The Magellanic Clouds as a template for the study of stellar populations and galaxy interactions
M. -R. L. Cioni, K. Bekki, G. Clementini +18
The Magellanic System represents one of the best places to study the formation and evolution of galaxies. Photometric surveys of various depths, areas and wavelengths have had a si…
Optimal photometry for colour-magnitude diagrams and its application to NGC 2547
Tim Naylor, E. J. Totten, R. D. Jeffries +3
We have developed the techniques required to use the optimal photometry algorithm of Naylor (1998) to create colour-magnitude diagrams with well defined completeness functions. To…
No disks around low-mass stars and brown dwarfs in the young sigma Orionis cluster?
J. M. Oliveira, R. D. Jeffries, M. J. Kenyon +2
We report on the analysis of 2MASS near-infrared data of a sample of low-mass stars and brown dwarfs in the sigma Orionis cluster. Youth and cluster membership have been spectrosco…
Low Mass Stars and Brown Dwarfs around Sigma Orionis
M. J. Kenyon, R. D. Jeffries, T. Naylor
We present optical spectroscopy of 71 photometric candidate low-mass members of the cluster associated with Sigma Orionis. Thirty-five of these are found to pass the lithium test a…