We have discovered a relatively large number of brown dwarf candidates in the Pleiades young open cluster as a result of a deep CCD IZ survey covering 1 deg^2...
In this invited talk, I briefly summarise early photometric and proper motion surveys carried out in the nearest and youngest open clusters to introduce the...
Two new late-type L subdwarfs were discovered in our recent search of UKIDSS and SDSS. We discuss the signatures of halo brown dwarfs based on known and new L...
Brown dwarfs: the bridge between stars and planets
Brown dwarfs are objects with masses, effective temperatures and luminosities intermediate between those of very low-mass stars and the most massive giant...
Bulge morphology of non-interacting starburst galaxies.
The authors show, in NGC 4736, that the bulge indicates strong and radially variable ellipticity, evidence of star formation, and outflow, while the bulge of...
Bulges of Disk Galaxies at Intermediate Redshifts: Nuclear Densities and Colours
We analyze central surface brightness, nuclear and global colors of intermediate redshift disk galaxies in WFPC2/HST Groth strip and ACS/HST GOODS-N. The aim is...