Publications
Explore 75 academic publications
Astronomical CCD observing and reduction techniques
CCD instrumentation and techniques in observational astronomy are surveyed. The general topics addressed include: history of large array scientific CCD imagers; noise sources an...
The Hamburg/RASS Catalogue of optical identifications
\n We present the Hamburg/RASS Catalogue (HRC) of optical identifications of \nX-ray sources at high-galactic latitude. The HRC includes all X-ray sources \nfrom the ROSAT Brigh...
Stellar populations and surface brightness fluctuations: new observations and models
We examine the use of surface brightness fluctuations (SBF) for both stellar population and distance studies. New V-band SBF data are reported for five Fornax cluster galaxies a...
Star formation, metallicity and dust properties derived from the StromloAPM galaxy survey spectra
We have derived star formation rates (SFRs), gas-phase oxygen abundances and effective dust absorption optical depths for a sample of galaxies drawn from the Stromlo—APM redshif...
Precise radial velocities of late-type stars in the open clusters M11 and M67
The authors have obtained precise radial-velocity measurements of 39 stars and 170 stars in the fields of the open clusters M11 and M67, respectively; by selection, the vast maj...
Measurement of the oscillator strengths of very weak 1 eV Fe I lines
Relative oscillator strengths are measured for nine very weak 1-eV Fe I lines, using the Oxford spectroscopic furnace. These oscillator strengths are placed on an absolute scale...
Non-LTE model atmospheres for central stars of planetary nebulae
A grid of hot non-LTE model atmospheres with H and He opacity sources has been calculated. The emergent fluxes, together with integrals required for Zanstra and Energy-Balance m...
High-Redshift Quasars Found in Sloan Digital Sky Survey Commissioning Data. II. The Spring Equatorial Stripe
This is the second paper in a series aimed at finding high-redshift quasars from five-color (u'g'r'i'z') imaging data taken along the Celestial Equator by the Sloan Digital Sky ...
First‐Year <i>Wilkinson Microwave Anisotropy Probe</i> ( <i>WMAP</i> ) Observations: Galactic Signal Contamination from Sidelobe Pickup
Since the Galactic center is ~1000 times brighter than fluctuations in the Cosmic Microwave Background (CMB), CMB experiments must carefully account for stray Galactic pickup. W...