190 citations · 1.3k across the 17 of their papers we have counts for
6 papers · 2 filters
ACS photometry of newly-discovered globular clusters in the outer halo of M31
A. D. Mackey, A. Huxor, A. M. N. Ferguson +6
We report the first results from deep ACS imaging of ten classical globular clusters in the far outer regions (15 < R_p < 100 kpc) of M31. Eight of the clusters, including two of t…
CaII and DLA absorption line systems: dust, metals and star formation at 0.4<z<1.3
Vivienne Wild, Paul Hewett, Max Pettini
Absorption line studies of galaxies along the line-of-sight to distant quasars allow a direct observational link between the properties of the extended gaseous disk/halo and of the…
Intergalactic CIV absorption at redshifts 5.4 to 6
Emma V. Ryan-Weber, Max Pettini, Piero Madau
We report the discovery of a strong CIV 1548,1550 absorption system at z_abs = 5.7238 in the near-infrared spectrum (J-band) of the z_em = 6.28 QSO SDSS J1030+0524. These observati…
Accurate laboratory ultraviolet wavelengths for quasar absorption-line constraints on varying fundamental constants
M. Aldenius, S. Johansson, M. T. Murphy
The most precise method of investigating possible space-time variations of the fine-structure constant, using high-redshift quasar absorption lines, is the many-multiplet (MM) meth…
The opaque nascent starburst in NGC 1377: Spitzer SINGS observations
H. Roussel, G. Helou, J. D. Smith +16
We analyze extensive data on NGC1377 from the Spitzer Infrared Nearby Galaxies Survey (SINGS). Within the category of nascent starbursts, that we previously selected by their infra…
X-ray spectral properties of high-redshift radio-loud quasars beyond redshift 4--first results
W. Yuan, A. C. Fabian, M. A. Worsley +1
(abridged) We firstly present the results of X-ray spectroscopic observations with XMM-Newton for four high-redshift radio-loud quasars at z>4. These observations more than double…