SDSS and 2MASS photometry of 129 ultra-cool dwarf candidates. The photometric data are from the seventh Data Release of the SDSS Photometric and the 2MASS All...

The authors present VI CCD photometry for nine fields towards the centre of NGC 1851 covering an area of 22×22 arcmin2, out to 1.2 tidal radii. These were...

We are continuing to study the observational characteristics of Holoea. This young stellar object, associated with IRAS 05327+3404, appears to be undergoing the...

UV observations of some massive globular clusters uncovered a significant population of very hot stars below the hot end of the horizontal branch, the so-called...

We discuss results on the oxygen abundance in a sample of 23 metal-poor (-3.0≤ [Fe/H] ≤ -0.3) unevolved stars and one giant. High resolutionspectroscopy of OH...

We have performed a detailed oxygen abundance analysis of 23 metal-poor (-3.0 [Fe/H] -0.3) unevolved halo stars and one giant through the OH bands in the near...

We present follow-up spectroscopy to 12 candidate white dwarf-brown dwarf binaries. We have confirmed that 8 objects do indeed have a white dwarf primary (7 DA...

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Contents: Vol. I: The Sun and solar-like stars. Stellar structure and evolution. Astronomical instrumentation. General lectures. Vol. II: Structure and...