967 citations · 4k across the 53 of their papers we have counts for
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High Accuracy Near-infrared Imaging Polarimetry with NICMOS
D. Batcheldor, G. Schneider, D. C. Hines +5
The findings of a nine orbit calibration plan carried out during HST Cycle 15, to fully determine the NICMOS camera 2 (2.0 micron) polarization calibration to high accuracy, are re…
High Accuracy Imaging Polarimetry with NICMOS
D. Batcheldor, G. Schneider, D. C. Hines +5
The ability of NICMOS to perform high accuracy polarimetry is currently hampered by an uncalibrated residual instrumental polarization at a level of 1.2-1.5%. To better quantify an…
From major merger to radio galaxy: low surface-brightness stellar counterpart to the giant HI ring around B2 0648+27
B. H. C. Emonts, R. Morganti, J. H. van Gorkom +3
We present the detection of a low surface-brightness stellar counterpart to an enormous (190 kpc) ring of neutral hydrogen (HI) gas that surrounds the nearby radio galaxy B2 0648+2…
Enormous disc of cool gas surrounding the nearby powerful radio galaxy NGC 612 (PKS 0131-36)
B. H. C. Emonts, R. Morganti, T. A. Oosterloo +5
We present the detection of an enormous disc of cool neutral hydrogen (HI) gas surrounding the S0 galaxy NGC 612, which hosts one of the nearest powerful radio sources (PKS 0131-36…
Fast outflows in compact radio sources: evidence for AGN-induced feedback in the early stages of radio source evolution
J. Holt, C. N. Tadhunter, R. Morganti
We present intermediate resolution, wide wavelength coverage spectra for a complete sample of 14 compact radio sources taken with the aim of investigating the impact of the nuclear…
IC5063: AGN driven outflow of warm and cold gas
R. Morganti, J. Holt, L. Saripalli +2
We present new ATCA 17- and 24-GHz radio images and ESO-NTT optical spectra of the radio-loud Seyfert galaxy IC5063, the first galaxy in which a fast (~ 600 km/s) outflow of neutra…
Enhanced phase mixing of Alfvén waves propagating in stratified and divergent coronal structures
P. D. Smith, D. Tsiklauri, M. S. Ruderman
Corrected analytical solutions describing the enhanced phase mixing of Alfven waves propagating in divergent stratified coronal structures are presented. These show that the enhanc…
Empirical isochrones and relative ages for young stars, and the radiative-convective gap
N. J. Mayne, Tim Naylor, S. P. Littlefair +2
We have selected pre-main-sequence stars in 12 groups of notional ages ranging from 1 Myr to 35 Myrs, using heterogeneous membership criteria. Using these members we have construct…
The Keele-Exeter young cluster survey: I. Low mass pre-main sequence stars in NGC 2169
R. D Jeffries, J. M. Oliveira, Tim Naylor +2
We have used R_C I_C CCD photometry from the Isaac Newton telescope and intermediate resolution spectroscopy from the Gemini North telescope to identify and characterise low-mass (…
The nature of the close magnetic white dwarf + probable brown dwarf binary SDSS J121209.31+013627.7
M. R. Burleigh, T. R. Marsh, B. T. Gansicke +16
Optical time series photometry of the short period magnetic white dwarf + probable brown dwarf binary SDSS 121209.31+013627.7 reveals pulse-like variability in all bands from i' to…
Timescales of merger, starburst and AGN activity in radio galaxy B2 0648+27
B. H. C. Emonts, R. Morganti, C. N. Tadhunter +4
In this paper we use neutral hydrogen HI and optical spectroscopic observations to compare the timescales of a merger event, starburst episode and radio-AGN activity in the radio g…
15 years of VLBI observations of two compact radio sources in Messier 82
R. J. Beswick, J. D. Riley, I. Marti-Vidal +6
We present the results of a second epoch of 18cm global Very Long-Baseline Interferometry (VLBI) observations, taken on 23 February 2001, of the central kiloparsec of the nearby st…
Fast neutral outflows in powerful radio galaxies: a major source of feedback in massive galaxies
R. Morganti, C. N. Tadhunter, T. A. Oosterloo
We report the detection of fast (~ 1000 km/s), massive outflows of neutral gas observed -- using the WSRT -- as 21-cm HI absorption against the strong radio continuum of seven radi…
Can variability account for apparent age spreads in OB association colour-magnitude diagrams?
Ben Burningham, Tim Naylor, S. P. Littlefair +1
We have investigated the role of photometric variability in causing the apparent age spreads observed in the colour-magnitude diagrams of OB associations. We have found that the co…
ULTRACAM observations of the black hole X-ray transient XTE J1118+480 in quiescence
T. Shahbaz, V. S. Dhillon, T. R. Marsh +5
We present high time-resolution multicolour observations of the quiescent soft X-ray transient XTE J1118+480 obtained with ULTRACAM. Superimposed on the double-humped continuum g'…
Nearby star cluster formation: Probes of cosmological galaxy evolution
P. Anders, R. de Grijs, U. Fritze-v. Alvensleben
(abridged) The old Star Cluster (SC) systems surrounding any sofar investigated galaxy represent a powerful tool for the understanding of the cosmological evolution of their host g…
OH in Messier 82
M. K. Argo, A. Pedlar, T. W. B. Muxlow +4
Several new main line OH masers have been detected in the nearby starburst galaxy M82. Eight masers have been detected to 5 sigma, six of which are new detections. Observations cov…
From Young to Old: Spectral Models for Star Cluster Systems
Uta Fritze -- v. Alvensleben, Peter Anders, Richard de Grijs
Evolutionary synthesis models for star clusters of various metallicities including gaseous emission during the lifetime of the ionising stars are used to model star cluster systems…
Multicolour observations of V404 Cyg with ULTRACAM
T. Shahbaz, V. S. Dhillon, T. R. Marsh +5
We present high time-resolution multicolour observations of the quiescent soft X-ray transient V404 Cyg obtained with ULTRACAM. Superimposed on the secondary star's ellipsoidal mod…
Young star clusters: Clues to galaxy formation and evolution
P. Anders, U. Fritze--v. Alvensleben, R. de Grijs
Young clusters are observed to form in a variety of interacting galaxies and violent starbursts, a substantial number resembling the progenitors of the well-studied globular cluste…
Young star clusters: Metallicity tracers in external galaxies
P. Anders, U. Fritze--v. Alvensleben, R. de Grijs
Star cluster formation is a major mode of star formation in the extreme conditions of interacting galaxies and violent starbursts. These newly-formed clusters are built from recycl…
Young star clusters: Progenitors of globular clusters!?
P. Anders, U. Fritze--v. Alvensleben, R. de Grijs
Star cluster formation is a major mode of star formation in the extreme conditions of interacting galaxies and violent starbursts. Young clusters are observed to form in a variety…
Multi-color observations of Young Star Clusters
P. Anders, U. Fritze--v. Alvensleben, R. de Grijs
We present a new set of evolutionary synthesis models of our GALEV code, specifically developed to include the gaseous emission of presently forming star clusters, in combination w…
Star Cluster Formation and Evolution in the Dwarf Starburst Galaxy NGC 1569
P. Anders, R. de Grijs, U. Fritze--v. Alvensleben +1
We analyse multi-wavelength Hubble Space Telescope (HST) observations of a large number of star clusters in the nearby (post-) starburst dwarf galaxy NGC 1569. Their spectral energ…