Cottrell, A.F., Cockshott, W.P., Michaelson, G.J., Wright, I.P.
This monograph examines the domain of classical political economy using the methodologies developed in recent years both by the new discipline of econo-physics and by computing science. This approach...
Gibson, E. K., McKay, D. S., Pillinger, C. T., Wright, I. P., Sims, M. R., Richter, L.
The Beagle Science Package is a flight qualified set of instruments which should be deployed to the lunar surface to answer the questions about water and volatiles present in permanently shadowed...
Wright, I.P., Barber, S.J., Morgan, G.H., Morse, A.D., Sheridan, S., Andrews, D.J., ...
A fundamental goal of cometary studies is to determine the exact relationship between these bodies and the Solar System – the question(s) can be summarised as follows: did comets originate during...
Grady, Monica M., Anand, M., Gilmour, M. A., Watson, J. S., Wright, I. P.
We present carbon and oxygen isotope data on carbonates in five nakhlites and use the results to interpret the martian weathering processes.
The effect of atmospheric entry heating on micrometeorite volatile composition (2006)
Wilson, R. C., Pearson, V. K., Franchi, I. A., Wright, I. P., Gilmour, I.
Observation and analysis of in situ carbonaceous matter in Nakhla: part II (2006)
Gibson Jr., E. K., Clemett, S. J., Thomas-Keprta, K. L., McKay, D. S., Wentworth, S. J., Robert, F., ...
Analysis of in situ carbonaceous matter in the Nakhla SNC meteorite has been carried out using a variety of techniques. Laser raman data shows the carbonaceous matter to be highly complex and static...
Evolved gas analysis of hydrated phases in Murchison and Orgueil (2005)
Morris, A.A., Baker, L., Franchi, I.A., Wright, I.P.
To better characterise the hydrated minerals in chondrites Evolved Gas Analysis of Murchison, Orgueil and selected minerals has been carried out. Meteorite water release profiles show significant...
A multi-disciplinary investigation of the Jovian system (2005)
Thomas, N., Baumjohann, W., Dehant, V., Chassefiere, E., Leblanc, F., Drossart, P., ...
Aqueous alteration of Nakhlites: implications for water on Mars (2005)
Grady, Monica M., Anand, M., Bridges, J. C., Pearson, V. K., Franchi, I. A., Wright, I. P.
Space weathering: Laboratory analyses and in-situ instrumentation (2005)
Bentley, M.S., Ball, A.J., Dyar, M.D., Pieters, C.M., Wright, I.P., Zarnecki, J.C.
Simulations of space weathering using laser irradiation are exploited to study the formation of sub-microscopic iron. A variety of magnetic techniques are evaluated to characterise this iron and are...
Bridges, J. C., James, R. H., Pearson, V. K., Baker, L., Verchovsky, A. B., Wright, I. P.
Nakhla and Lafayette delta 7Li values for samples and extracts (4.1-14.2‰) are consistent with brine evaporation. Relatively 13C-poor siderite in Lafayette suggests more than one carbon source was...
As a prelude to the design of sampling devices able to extract materials from the icy surfaces of comets, outer-planet satellites, and the martian poles, it is necessary to understand some of the...
Verchovsky, A.B., Wright, I.P.
Using model calculations for ion implantation into spherical grains in free space, we have identified two noble gas components implanted with high and low energies into presolar SiC grains isolated...
Magmatic carbon in Martian meteorites: attempts to constrain the carbon cycle on Mars (2004)
Grady, M.M., Verchovsky, A.V., Wright, I.P.
One of the current goals of Martian exploration is to find evidence for extinct (or even extant) life. Carbon (an essential ingredient of life on Earth) is known to occur on Mars as CO2 in the...
Sephton, M.A., Love, G.D., Watson, J.S., Verchovsky, A.B., Wright, I.P., Snape, C.E., ...
The major organic component of carbonaceous chondrites is a solvent-insoluble, high molecular weight macromolecular material that constitutes at least 70% of the total organic content in these...
As a prelude to the design of sampling devices able to extract materials from the icy surfaces of comets, outer-planet satellites, and the martian poles, it is necessary to understand some of the...
As a prelude to the design of sampling devices able to extract materials from the icy surfaces of comets, outer-planet satellites, and the martian poles, it is necessary to understand some of the...
Beagle 2: Mission to Mars — current status (2004)
Gibson, E. K., Pillinger, C. T., Wright, I. P., Morgan, G. H., Yau, D., Stewart, J. L. C., ...
Beagle 2, developed in the UK, was launched on June 2, 2003. It landed on Mars on December 25th, 2003 in Isidis Planitia, a large sedimentary basin. To date, the team is awaiting signals from the...
Verchovsky, A. B, Fisenko, A. V., Semjonova, L. F., Wright, I. P., Pillinger, C. T.
Comparison of carbon isotope variations in grain size fractions of presolar diamonds separated from three meteorites (Efremovka, Boriskino and Krymka) suggest that diamond from various parts of solar...
On the variations of the elemental composition of the P3 component in presolar diamonds (2004)
Fisenko, A. V., Verchovsky, A. B., Semjonova, L. F., Wright, I. P., Pillinger, C. T.
Analysis of noble gas element variations in the P3 component of presolar diamonds indicates that a special mechanism of element fractionation is required to explain the variations.
Selection of the landing site in Isidis Planitia of Mars probe Beagle 2 (2003)
Bridges, J.C., Seabrook, A.M., Rothery, D.A., Kim, J.R., Pillinger, C.T., Sims, M.R., ...
This paper describes selection and characterization of the landing site for the Mars 2004 Beagle 2 mission. The site is within Isidis Planitia between 10°–12°N, 266°–274°W, centered at...
Investigating the variations in carbon and nitrogen isotopes in carbonaceous chondrites (2003)
Sephton, M.A., Verchovsky, A.B., Bland, P.A., Gilmour, I., Grady, M.M., Wright, I.P.
The carbonaceous chondrites contain significant amounts of carbon- and nitrogen-bearing components, the most abundant of which is organic matter. Stepped combustion data of whole rock and HF/HCl...
Scientific objectives of the Beagle 2 lander (2003)
Wright, I.P., Sims, M.R., Pillinger, C.T.
Beagle 2 is the name given to the lander part of the ESA Mars Express mission (launch 2003). The main focus of Beagle 2 is to establish whether there is convincing evidence for past life on Mars, or...
The oxygen isotopic composition of water extracted from unequilibrated ordinary chondrites (2003)
Baker, L., Franchi, I.A., Wright, I.P., Pillinger, C.T.
The oxygen isotopic composition of water extracted from the unequilibrated ordinary chondrites Semarkona and Bishunpur reveals differences in alteration mineralogy and levels of isotopic enrichment...
Ion implantation into presolar grains: a theoretical model (2003)
Verchovsky, A.B., Wright, I.P., Pillinger, C.T.
A numerical model for ion implantation into spherical grains in free space has been developed. It can be applied to single grains or collections of grains with known grain-size distributions....
On 25 December 2003, the British-built Beagle 2 probe will land on the surface of Mars to carry out one of the most potentially important pieces of analytical science ever conceived: to search for...
Hydropyrolysis of high molecular weight organic matter in Murchison (2003)
Sephton, M. A., Love, G. D., Watson, J. S., Verchovsky, A. B., Wright, I. P., Snape, C. E., ...
Hydropyrolysis of the Murchison macromolecular material releases polyaromatic compounds including phenanthrene, carbazole, fluoranthene, pyrene, chrysene, perylene, benzoperylene and coronene units...
Is Xe-HL a real component? (2003)
Fisenko, A. V., Verchovsky, A. B., Semjonova, L. F., Wright, I. P., Pillinger, C. T.
Analysis of noble gases in the grain-size fractions of Boriskino meteorite indicate that Xe-HL is a real component implanted into diamonds after mixing of isotopically anomalous and normal components.
Revised target co-ordinates for the Beagle 2 lander (2003)
Bridges, J., Seabrook, A. M., Rothery, D. A., Pillinger, C. T., Sims, M. R., Wright, I. P.
The revised, IAU 2000 target co-ordinates of the Mars Beagle 2 lander are 11.6oN, 90.75oE.
High molecular weight organic matter in martian meteorites (2002)
Sephton, M.A., Wright, I.P., Gilmour, I., De Leeuw, J.W., Grady, M.M., Pillinger, C.T.
We have performed an investigation to detect high molecular weight organic matter in martian meteorites. Solvent-extracted samples of two Antarctic finds (ALH 84001, sub-sample 106 and EET A79001,...
Baker, L., Franchi, I.A., Wright, I.P., Pillinger, C.T.
The fall and recovery of the Tagish Lake meteorite in British Columbia in January 2000 provided a unique opportunity to study relatively pristine samples of carbonaceous chondrite material....
Verchovsky, A.B., Sephton, M.A., Wright, I.P., Pillinger, C.T.
The exact location of planetary noble gases in meteorites remains unknown but it is inferred to be closely associated with, if not precisely some portion of, the macromolecular organic material in...
Grady, M.M., Verchovsky, A.B., Franchi, I.A., Wright, I.P., Pillinger, C.T.
We have studied the carbon and nitrogen stable isotope geochemistry of a small pristine sample of the Tagish Lake carbonaceous chondrite by high resolution stepped combustion mass spectrometry, and...
Baker, L., Franchi, I.A., Maynard, J., Wright, I.P., Pillinger, C.T.
We have developed a new technique in which a solid reagent, cobalt(III) fluoride, is used to prepare oxygen gas for isotope ratio measurement from water derived either from direct injection or from...
An evaluation of in situ analysis and sample return in the exploration of Mars (2002)
Sims, M.R., Pullan, D., Pillinger, C.T., Wright, I.P.
In this paper, the case for sample return is examined against in situ analysis and the merits of each approach are discussed. In situ analysis techniques are highly advanced with a large number of...
Search for Q: single grains Xe isotope analysis of carbonaceous residue from Yilmia (2002)
Verchovsky, A. B., Gilmour, J. D., Holland, G., Sephton, M. A., Wright, I. P., Franchi, I. A.
We analyse Xe in single grains in HF-HCl residue from Yilmia using RELAX mass spectrometer.
Fisenko, A. V., Verchovsky, A. B., Semjonova, L. F., Ott, U., Wright, I. P., Pillinger, C. T.
We found a new Xe component in presolar diamonds from Boriskino chondrite.
Graham, G.A., McBride, N., Kearsley, A.T., Drolshagen, G., Green, S.F., McDonnell, J.A.M., ...
Prior to the retrieval in 1993 from low Earth orbit (LEO), the "—V2" Solar Array wing of the Hubble Space Telescope was exposed to hypervelocity impacts (micrometre to millimetre scale) from both...
Oxygen isotopes and the early solar system (2001)
Franchi, I.A., Baker, L., Bridges, J.C., Wright, I.P., Pillinger, C.T.
Meteorites preserve a wide range of oxygen isotopic signatures from the time of the Solar System's formation. Most of these rocks record complex histories, each phase of which has the potential for...
Characterisation of extraterrestrial samples by Raman and Electron microprobes (2001)
Kearsley, A.T., Franchi, I.A., Graham, G.A., Wright, I.P., Burchell, M.J.
A numerical model of ion implantation into presolar grains (2001)
Verchovsky, A.V., Wright, I.P., Fisenko, A.V., Pillinger, C.T.
Pre-solar grains such as diamond and silicon carbide (found in primitive chondritic meteorites), contain isotopically anomalous noble gases. There are two ways that these could have been incorporated...
The Beagle landing site in Isidis Planitia (2001)
Bridges, J.B., Seabrook, A.M., Kim, J.R., Muller, J-P., Rothery, D.A., Pillinger, C.T., ...
The Mars probe Beagle 2 will land in Isidis Planitia. This region satisfies the engineering constraints and has evidence for particularly volatile-rich subsoil. Isidis provides a suitable place for...
Graham, G.A., Butterworth, A.L., Burchell, M.J., Kearsley, A.T., Creighton, J.A., Mann, J., ...
We present observations from the laboratory capture of particles in aerogel. The paper focuses on a possible extraction technique and the bulk mineral characterization of the captured material using...
Continued investigation of the light element geochemistry of Tagish Lake (2001)
Grady, M.M., Franchi, I.A., Verchovsky, A.V., Wright, I.P., Pillinger, C.T.
We have determined the abundance and isotopic composition of two separate carbonate generations within Tagish Lake. Nitrogen isotope analysis of the chondrite shows it to be organic-rich, with d15N...
Attempts to separate the Q-noble gas carrier in Yilmia (2001)
Verchovsky, A. B., Sephton, M. A., Wright, I. P., Pillinger, C. T.
Beagle 2: The Exo-Biology Lander on ESA's 2003 Mars Express Mission (1999)
Sims, M. R., Pillinger, C. T., Wright, I. P., Morgan, G., Pullan, D., Whitehead, S., ...
Beagle 2: The exo-biology lander on ESA's 2003 Mars Express mission. (1998)
Hoover, R. B., Sims, M. R., Pillinger, C. T., Wright, I. P., Morgan, G., Fraser, G., ...
Carbon stable isotope analysis of Antarctic micrometeorites (1996)
Graham, G.A., Wright, I.P., Grady, M.M., Perreau, M., Maurette, M., Pillinger, C.T.
Carbon stable isotope analyses of Antarctic micrometeorites (1996)
Graham, G.A., Wright, I.P., Grady, M.M., Perreau, M., Maurette, M., Pillinger, C.T.
Carbon stable isotope analysis of Antarctic micrometeorites (1996)
Graham, G.A., Wright, I.P., Grady, M.M., Perreau, M., Maurette, M., Pillinger, C.T.
Carbon stable isotope analyses of Antarctic micrometeorites (1996)
Graham, G.A., Wright, I.P., Grady, M.M., Perreau, M., Maurette, M., Pillinger, C.T.
Carbon isotope analysis at the nanogram level using static mass spectrometry. (1982)
Thesis (Ph. D.)--University of Cambridge, 1982.
Kleinman, M J, Wilkinson, A E, Wright, I P, Evans, I H, Bevan, E A
The extracellular glucoamylase from certain strains of Saccharomyces cerevisiae can be purified from culture medium by a simple chromatographic procedure. The native enzyme is heavily glycosylated...
Malate dehydrogenase from a number of bacteria drawn from several genera and representing the mesophilic, moderately thermophilic and extremely thermophilic classes was isolated by procedures which...
Kleinman, M J, Wilkinson, A E, Wright, I P, Evans, I H, Bevan, E A
The extracellular glucoamylase from certain strains of Saccharomyces cerevisiae can be purified from culture medium by a simple chromatographic procedure. The native enzyme is heavily glycosylated...
Malate dehydrogenase from a number of bacteria drawn from several genera and representing the mesophilic, moderately thermophilic and extremely thermophilic classes was isolated by procedures which...