A5024515439- Astronomy and Astrophysical Research
- Galaxies: Formation, Evolution, Phenomena
- Gamma-ray bursts and supernovae
- Plant Water Relations and Carbon Dynamics
- Fern and Epiphyte Biology
- Microbial Natural Products and Biosynthesis
- Plant and animal studies
- Milk Quality and Mastitis in Dairy Cows
- Plant and Fungal Species Descriptions
- Ecology and Vegetation Dynamics Studies
- Astrophysical Phenomena and Observations
- Plant Diversity and Evolution
- Cosmology and Gravitation Theories
- Bacteriophages and microbial interactions
- Microbial infections and disease research
- Remote Sensing in Agriculture
- Advanced Vision and Imaging
- Catalytic C–H Functionalization Methods
- Plant Parasitism and Resistance
- Astronomical Observations and Instrumentation
- Plant Reproductive Biology
- Histone Deacetylase Inhibitors Research
- Biochemical and Molecular Research
- Stellar, planetary, and galactic studies
- RNA modifications and cancer
University of Nottingham
2010-2013
John Innes Centre
2010-2013
Norwich Research Park
2010-2011
Royal Botanic Gardens, Kew
2008-2010
The University of Queensland
1980
We present new improved constraints on the Hubble parameter H ( z ) in redshift range 0.15 < 1.1, obtained from differential spectroscopic evolution of early-type galaxies as a function redshift. extract large sample ∼ 11000) several surveys, spanning almost 8 billion years cosmic lookback time (0.15 1.42). select most massive, red elliptical galaxies, passively evolving and without signature ongoing star formation. Those can be used standard chronometers, firstly proposed by Jimenez...
We report the results of a comprehensive study relationship between galaxy size, stellar mass and specific star formation rate (sSFR) at redshifts 1.3 < z 1.5. Based on mass-complete (M⋆ ≥ 6 × 1010 M⊙), spectroscopic sample from UK Infrared Deep Sky Survey (UKIDSS) Ultradeep Survey, with accurate stellar-mass measurements derived spectro-photometric fitting, we find that ≃ 1.4 location massive galaxies size–mass plane is determined primarily by their sSFR. At this epoch, which are passive...
We investigate galactic-scale outflows in the redshift range 0.71 ≤ z 1.63, using 413 K-band selected galaxies observed spectroscopic follow-up of UKIDSS Ultra-Deep Survey (UDSz). The have an average stellar mass ∼109.5 M⊙ and span a wide rest-frame colours, representing typical star-forming at this epoch. stack spectra by various galaxy properties, including mass, [O ii] equivalent width, star formation rate, specific rate spectral indices. find that are present virtually all stacks, with...
We present spectroscopic confirmation of ten highly luminous (L >= 2L*) Lyman alpha emitters in the redshift range 6.01<z<6.49 (nine galaxies and one AGN), initially drawn from a sample fourteen z_phot 6 break (LBGs) selected an area 0.25 square degrees within UKIDSS Ultra-deep Survey (UDS). Overall, our high rate (>= 71%) low contamination provides strong vindication photometric analysis used to define original sample. By considering star-formation estimates based on Ly_alpha UV continuum...
We use the United Kingdom Infrared Telescope Deep Sky Survey (UKIDSS) Ultra (UDS), deepest degree-scale near-infrared survey to date, investigate clustering of star-forming and passive galaxies z ∼ 3.5. Our new measurements include first determination for at > 2, which we achieve using a cross-correlation technique. find that are most strongly clustered, typically hosted by massive dark matter haloes with Mhalo 5 × 1012 M⊙ irrespective redshift or stellar mass. findings consistent models in...
The embryo sac, nucellus and integuments of the early-divergent angiosperms Hydatellaceae other Nymphaeales are compared with those seed plants, in order to evaluate evolutionary origin these characters angiosperms. Using light microscopy, ovule sac development described five (of 12) species Trithuria, sole genus Hydatellaceae, Cabombaceae Nymphaeaceae. Trithuria is bitegmic tenuinucellate, rather than crassinucellate as most Nymphaeales. operculate possesses a perisperm that develops...
We report the results of a study exploring stellar populations 13 luminous (L > 1.2L*), spectroscopically confirmed, galaxies in redshift interval 5.5 < z 6.5, all with Hubble Space Telescope (HST) Wide Field Camera 3/infrared and Spitzer Infrared Array imaging from HST/Cosmic Assembly Near-infrared Deep Survey Extended Survey. Based on fitting observed photometry galaxy spectral energy distribution (SED) templates covering wide range different star formation histories, including...
Labellum micromorphology was imaged via scanning electron and light microscopy in 32 microspecies one artificial hybrid of the European terrestrial orchid genus Ophrys, together representing all ten macrospecies circumscribed molecular phylogenetics. Imaging homologous regions adaxial surface, paying particular attention to diagnostic feature comparatively reflective speculum, revealed presence between three seven epidermal cell types on each labellum, less complex labella being...
We are surprised that our recent comparative study of the micromorphology all species European orchid genus Ophrys L. (Bradshaw et al., 2010) has attracted wide-ranging criticism (Vereecken 2011) from a well-established group researchers who, for sake brevity, we will term 'ethologists' (ethology: 'the science character . .; scientific function and evolution animal behaviour').Our surprise stems decision authors to direct largely conceptual criticisms at paper is dominantly empirical, when...
We use the UKIDSS Ultra-Deep Survey to trace evolution of galaxy clustering z = 3. Using photometric redshifts derived from data covering wavelength range 0.3 - 4.5 um we examine this as a function absolute K-band luminosity, colour and star-formation rate. Comparing deprojected amplitudes, find that red galaxies are more strongly clustered than blue out at least 1.5, irrespective rest-frame luminosity. then construct passive star-forming samples based on stellar age, histories calculated...
We present a study of galaxy environments to z~2, based on sample over 33,000 K-band selected galaxies detected in the UKIDSS Ultra Deep Survey (UDS). The combination infrared depth and area UDS allows us extend previous studies environment z>1 without strong biases associated with optical selection. divided by rest frame (U-B) colours, addition `passive' `star-forming' subsets template fitting. find that colour is strongly correlated overdensity small scales (<1Mpc diameter), red/passive...
We investigate the environments of both X-ray and radio-loud active galactic nuclei (AGN) within UK Infrared Telescope (UKIRT) Deep Sky Survey (UKIDSS) Ultra-deep (UDS) using deep infrared selection to sample galaxy density field in redshift range 1.0 ≤z≤ 1.5. Using angular cross-correlation techniques we find that AGN preferentially reside overdense environments. also types cluster more strongly with those galaxies classified as ‘passive’ rather than are actively star forming. infer...
Nucleoid-associated proteins (NAPs) are small, highly abundant transcriptional regulators with low sequence specificity which involved in multiple DNA-related processes including gene expression, DNA protection, recombination/repair and nucleoid structuring. Through these functions they able to regulate important phenotypic properties virulence, secondary metabolism stress resistance. However the set of NAPs known within Actinobacteria is small incomplete. The missing likely be key virulence...
Strains of Staphylococcus aureus were isolated at a single sampling from cows in dairy herd. When typed by phage most showed complex pattern lysis with group III and IV phages. Cross-spotting strains great lytic activity ten phages isolated. The parent lysogenized these the effect on typing 202 daughter 25 cultures was studied. Phage action often blocked completely, up to four being one strain. Those frequently 101, 117, 367 42D.