2.5k citations · 16.8k across the 147 of their papers we have counts for
9 papers · 2 filters
Discs in early-type lensing galaxies: effects on magnification ratios and measurements of
Ole Moeller, Paul Hewett, A. W. Blain
Observations of early-type galaxies, both in the local universe and in clusters at medium redshifts, suggest that these galaxies often contain discs or disc-like structures. Using…
Luminous early-type field galaxies at z ~ 0.4 - II. Star-formation history and space density
J. P. Willis, P. C. Hewett, S. J. Warren +1
We present a combined photometric and spectroscopic analysis of the star formation history and space density of a sample of 485 luminous, M_V - 5 log h < -20.5, field early-type ga…
Distant field BHB stars and the mass of the Galaxy I: Classification of halo A-type stars
L. Clewley, S. J. Warren, P. C. Hewett +3
This is the first in a series of three papers presenting a new calculation of the mass of the Galaxy based on radial velocities and distances measured for a sample of some 100 fain…
The Point-Agape survey: 4 high signal-to-noise ratio microlensing candidates detected towards M31
S. Paulin-Henriksson, P. Baillon, A. Bouquet +12
We have carried out a survey of the Andromeda galaxy for unresolved microlensing (pixel lensing). We present a subset of four short timescale, high signal-to-noise microlensing can…
Detection of He II reionization in the SDSS quasar sample
T. Theuns, M. Bernardi, J. Frieman +4
The expansion of the Universe leads to a rapid drop in the mean hydrogen Ly-alpha opacity tau of the intergalactic medium (IGM), tau (1+z)^{3.8}, between redshifts 4 and 3. Measure…
A Candidate M31/M32 Intergalactic Microlensing Event
S. Paulin-Henriksson, P. Baillon, A. Bouquet +13
We report the discovery of a microlensing candidate projected 2'54" from the center of M32, on the side closest to M31. The blue color (R-I= 0.00 +/- 0.14) of the source argues str…
LBQS 0015+0239: A Binary Quasar with Small Angular Separation
C. D. Impey, C. E. Petry, C. B. Foltz +2
We present spectroscopic observations with Keck/LRIS of LBQS 0015+0239, a pair of quasars at z = 2.45 with a separation of arcsec (projected linear distance of 17.8 $h_{7…
Spectroscopic detection of quasars in the 2dF Galaxy Redshift Survey
Darren S. Madgwick, Paul C. Hewett, Daniel J. Mortlock +1
The 100,000 spectra from the 2 degree Field Galaxy Redshift Survey (2dFGRS) in the 100k Public Data Release represent the largest single compilation of galaxy spectra available. By…
WFCAM, UKIDSS, and z=7 quasars
Steve Warren, Paul Hewett
We estimate the number of z~7 quasars that will be discovered in the Large Area Survey (LAS) element of the UKIRT Infrared Deep Sky Survey (UKIDSS). The LAS will cover 4000 sq degs…