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Start Over Author "Saunders, W." Journal monthly notices of the royal astronomical society
39 results on '"Saunders, W."'

2. Reconstructed density and velocity fields from the 2MASS Redshift Survey

Author

Erdogdu, P., primary, Lahav, O., additional, Huchra, J. P., additional, Colless, M., additional, Cutri, R. M., additional, Falco, E., additional, George, T., additional, Jarrett, T., additional, Jones, D. H., additional, Macri, L. M., additional, Mader, J., additional, Martimbeau, N., additional, Pahre, M. A., additional, Parker, Q. A., additional, Rassat, A., additional, and Saunders, W., additional

Published
2006
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4. The dipole anisotropy of the 2 Micron All-Sky Redshift Survey

Author

Erdogdu, P., primary, Huchra, J. P., additional, Lahav, O., additional, Colless, M., additional, Cutri, R. M., additional, Falco, E., additional, George, T., additional, Jarrett, T., additional, Jones, D. H., additional, Kochanek, C. S., additional, Macri, L., additional, Mader, J., additional, Martimbeau, N., additional, Pahre, M., additional, Parker, Q., additional, Rassat, A., additional, and Saunders, W., additional

Published
2006
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5. The 6dF Galaxy Survey: samples, observational techniques and the first data release

Author

Jones, D. H., primary, Saunders, W., additional, Colless, M., additional, Read, M. A., additional, Parker, Q. A., additional, Watson, F. G., additional, Campbell, L. A., additional, Burkey, D., additional, Mauch, T., additional, Moore, L., additional, Hartley, M., additional, Cass, P., additional, James, D., additional, Russell, K., additional, Fiegert, K., additional, Dawe, J., additional, Huchra, J., additional, Jarrett, T., additional, Lahav, O., additional, Lucey, J., additional, Mamon, G. A., additional, Proust, D., additional, Sadler, E. M., additional, and Wakamatsu, K.-i., additional

Published
2004
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7. Predicting the peculiar velocities of nearby PSCz galaxies using the Least Action Principle

Author

Sharpe, J., primary, Rowan-Robinson, M., additional, Canavezes, A., additional, Saunders, W., additional, Branchini, E., additional, Efstathiou, G., additional, Frenk, C., additional, Keeble, O., additional, McMahon, R. G., additional, Maddox, S., additional, Oliver, S. J., additional, Sutherland, W., additional, Tadros, H., additional, and White, S. D. M., additional

Published
2001
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11. The PSCz catalogue

Author

Saunders, W., primary, Sutherland, W. J., additional, Maddox, S. J., additional, Keeble, O., additional, Oliver, S. J., additional, Rowan-Robinson, M., additional, McMahon, R. G., additional, Efstathiou, G. P., additional, Tadros, H., additional, White, S. D. M., additional, Frenk, C. S., additional, Carramiñana, A., additional, and Hawkins, M. R. S., additional

Published
2000
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12. The IRAS PSCz dipole

Author

Rowan-Robinson, M., primary, Sharpe, J., additional, Oliver, S. J., additional, Keeble, O., additional, Canavezes, A., additional, Saunders, W., additional, Taylor, A. N., additional, Valentine, H., additional, Frenk, C. S., additional, Efstathiou, G. P., additional, McMahon, R. G., additional, White, S. D. M., additional, Sutherland, W., additional, Tadros, H., additional, and Maddox, S., additional

Published
2000
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14. A comparison of the PSCz and Stromlo -- APM redshift surveys

Author

Seaborne, M. D., primary, Sutherland, W., additional, Tadros, H., additional, Efstathiou, G., additional, Frenk, C. S., additional, Keeble, O., additional, Maddox, S., additional, McMahon, R. G., additional, Oliver, S., additional, Rowan-Robinson, M., additional, Saunders, W., additional, and White, S. D. M., additional

Published
1999
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15. The QDOT all-sky IRAS galaxy redshift survey

Author

Lawrence, A., primary, Rowan-Robinson, M., additional, Ellis, R. S., additional, Frenk, C. S., additional, Efstathiou, G., additional, Kaiser, N., additional, Saunders, W., additional, Parry, I. R., additional, Xiaoyang, X., additional, and Crawford, J., additional

Published
1999
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16. The power spectrum of the Point Source Catalogue redshift survey

Author

Sutherland, W., primary, Tadros, H., additional, Efstathiou, G., additional, Frenk, C. S., additional, Keeble, O., additional, Maddox, S., additional, McMahon, R. G., additional, Oliver, S., additional, Rowan-Robinson, M., additional, Saunders, W., additional, and White, S. D. M., additional

Published
1999
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17. A non-parametric model for the cosmic velocity field

Author

Branchini, E., primary, Teodoro, L., additional, Frenk, C. S., additional, Schmoldt, I., additional, Efstathiou, G., additional, White, S. D. M., additional, Saunders, W., additional, Sutherland, W., additional, Rowan-Robinson, M., additional, Keeble, O., additional, Tadros, H., additional, Maddox, S., additional, and Oliver, S., additional

Published
1999
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18. Spherical harmonic analysis of the PSCz galaxy catalogue: redshift distortions and the real-space power spectrum

Author

Tadros, H., primary, Ballinger, W. E., additional, Taylor, A. N., additional, Heavens, A. F., additional, Efstathiou, G., additional, Saunders, W., additional, Frenk, C. S., additional, Keeble, O., additional, McMahon, R., additional, Maddox, S. J., additional, Oliver, S., additional, Rowan-Robinson, M., additional, Sutherland, W. J., additional, and White, S. D. M., additional

Published
1999
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19. Likelihood analysis of the Local Group acceleration

Author

Schmoldt, I., primary, Branchini, E., additional, Teodoro, L., additional, Efstathiou, G., additional, Frenk, C. S., additional, Keeble, O., additional, McMahon, R., additional, Maddox, S., additional, Oliver, S., additional, Rowan-Robinson, M., additional, Saunders, W., additional, Sutherland, W., additional, Tadros, H., additional, and White, S. D. M., additional

Published
1999
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21. The topology of the IRAS Point Source Catalogue Redshift Survey

Author

Canavezes, A., primary, Springel, V., additional, Oliver, S. J., additional, Rowan-Robinson, M., additional, Keeble, O., additional, White, S. D. M., additional, Saunders, W., additional, Efstathiou, G., additional, Frenk, C. S., additional, McMahon, R. G., additional, Maddox, S., additional, Sutherland, W., additional, and Tadros, H., additional

Published
1998
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23. A new large sample of ultraluminous IRAS galaxies

Author

Clements, D. L., primary, Sutherland, W. J., additional, Saunders, W., additional, Efstathiou, G. P., additional, McMahon, R. G., additional, Maddox, S., additional, Lawrence, A., additional, and Rowan-Robinson, M., additional

Published
1996
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26. The ultraviolet-to-radio continuum of the ultraluminous galaxy IRAS F10214 + 4724

Author

Rowan-Robinson, M., primary, Efstathiou, A., additional, Lawrence, A., additional, Oliver, S., additional, Taylor, A., additional, Broadhurst, T. J., additional, McMahon, R. G., additional, Benn, C. R., additional, Condon, J. J., additional, Lonsdale, C. J., additional, Hacking, P., additional, Conrow, T., additional, Saunders, W. S., additional, Clements, D. L., additional, Ellis, R. S., additional, and Robson, I., additional

Published
1993
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27. Optical, infrared, radio and polarization imaging of the high-redshift galaxy IRAS F10214 + 4724

Author

Lawrence, A., primary, Rowan-Robinson, M., additional, Oliver, S., additional, Taylor, A., additional, McMahon, R. G., additional, Broadhurst, T., additional, Scarrott, S. M., additional, Rolph, C. D., additional, Draper, P. W., additional, Ellis, R. S., additional, Tadhunter, C., additional, Condon, J. J., additional, Lonsdale, C. J., additional, Hacking, P., additional, Conrow, T., additional, Efstathiou, G. P., additional, and Saunders, W. S., additional

Published
1993
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30. The topology of the QDOT IRAS redshift survey

Author

Moore, B., primary, Frenk, C. S., additional, Weinberg, D. H., additional, Saunders, W., additional, Lawrence, A., additional, Ellis, R. S., additional, Kaiser, N., additional, Efstathiou, G., additional, and Rowan-Robinson, M., additional

Published
1992
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35. The one-point PDF of the initial conditions of our local Universe from the IRAS PSC redshift catalogue.

Author

Monaco, P., Efstathiou, G., Maddox, S.J., Branchini, E., Frenk, C.S., McMahon, R.G., Oliver, S.J., Rowan-Robinson, M., Saunders, W., Sutherland, W.J., Tadros, H., and White, S.D.M.

Subjects
METAPHYSICAL cosmology, DISTRIBUTION (Probability theory), REDSHIFT
Abstract

The algorithm ztrace of Monaco & Efstathiou is applied to the IRAS PSCz catalogue to reconstruct the initial conditions of our local Universe with a resolution down to ~5 h[sup -1] Mpc. The one-point probability distribution function (PDF) of the reconstructed initial conditions is consistent with the assumptions that: (i) IRAS galaxies trace mass on scales of ~5 h[sup -1] Mpc and (ii) the statistics of the primordial density fluctuations are Gaussian. We use simulated PSCz catalogues, constructed from N-body simulations with Gaussian initial conditions, to show that local non-linear bias can cause the recovered initial PDF (assuming no bias) to be non-Gaussian. However, for plausible bias models, the distortions of the recovered PDF would be difficult to detect using the volume finely sampled by the PSCz catalogue. So, for Gaussian initial conditions, a range of bias models remain compatible with our PSCz reconstruction results. [ABSTRACT FROM AUTHOR]

Published
2000
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36. The topology of the IRASPoint Source Catalogue Redshift Survey

Author

Canavezes, A., Springel, V., Oliver, S. J., Rowan‐Robinson, M., Keeble, O., White, S. D. M., Saunders, W., Efstathiou, G., Frenk, C. S., McMahon, R. G., Maddox, S., Sutherland, W., and Tadros, H.

Abstract

We investigate the topology of the new Point Source Catalogue Redshift Survey (PSCz) of IRASgalaxies by means of the genus statistic. The survey maps the local Universe with approximately 15 000 galaxies over 84.1 per cent of the sky, and provides an unprecedented number of resolution elements for the topological analysis. For comparison with the PSCz data we also examine the genus of large N‐body simulations of four variants of the cold dark matter (CDM) cosmogony. The simulations are part of the Virgo project to simulate the formation of structure in the Universe. We assume that the statistical properties of the galaxy distribution can be identified with those of the dark matter particles in the simulations. We extend the standard genus analysis by examining the influence of sampling noise on the genus curve and introducing a statistic able to quantify the amount of phase correlation present in the density field, the amplitude dropof the genus compared to a Gaussian field with identical power spectrum. The results for PSCz are consistent with the hypothesis of random‐phase initial conditions. In particular, no strong phase correlation is detected on scales ranging from 10 to 32 h−1Mpc, whereas there is a positive detection of phase correlation at smaller scales. Among the simulations, phase correlations are detected in all models at small scales, albeit with different strengths. When scaled to a common normalization, the amplitude drop depends primarily on the shape of the power spectrum. We find that the constant‐bias standard CDM model can be ruled out at high significance, because the shape of its power spectrum is not consistent with PSCz. The other CDM models with more large‐scale power all fit the PSCz data almost equally well, with a slight preference for a high‐density τCDM model.

Published
1998
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37. Extreme Fe II emission from an IRAS quasar

Author

Lawrence, A., primary, Saunders, W., additional, Rowan-Robinson, M., additional, Crawford, J., additional, Ellis, R. S., additional, Frenk, C. S., additional, Efstathiou, G., additional, and Kaiser, N., additional

Published
1988
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38. Predicting the peculiar velocities of nearby PSCz galaxies using the Least Action Principle

Author

J. Sharpe, S. J. Oliver, Michael Rowan-Robinson, Simon D. M. White, Carlos S. Frenk, William J. Sutherland, O. Keeble, A. Canavezes, Steve Maddox, Will Saunders, H. Tadros, E. Branchini, R. G. McMahon, George Efstathiou, Sharpe, J, Rowan Robinson, M, Canavezes, A, Saunders, W, Branchini, ENZO FRANCO, Efstathiou, G, Frenk, C, Keeble, O, Mcmahon, Rg, Maddox, S, Oliver, Sj, Sutherland, W, Tadros, H, and White, Sdm

Subjects
Physics, Cepheid variable, media_common.quotation_subject, Astrophysics (astro-ph), Cosmic distance ladder, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Galaxy, Redshift, Principle of least action, symbols.namesake, Space and Planetary Science, Sky, symbols, Range (statistics), Astrophysics::Galaxy Astrophysics, Hubble's law, media_common
Abstract

We use the Least Action Principle to predict the peculiar velocities of PSC-z galaxies inside $cz=2000$\km. Linear theory is used to account for tidal effects to $cz=15000$\km, and we iterate galaxy positions to account for redshift distortions. As the Least Action Principle is valid beyond Linear theory, we can predict reliable peculiar velocities even for very nearby galaxies (ie $cz \leq 500$\km). These predicted peculiar velocities are then compared with the observed velocities of 12 galaxies with Cepheid distances. The combination of the PSC-z galaxy survey (with its large sky coverage and uniform selection), with the accurate Cepheid distances, makes this comparison relatively free from systematic effects. We find that galaxies are good tracers of the mass, even at small ($\leq 10$\mpc) scales; and under the assumption of no biasing, $0.25 \leq \beta \leq 0.75$ (at 90% confidence). We use the reliable predicted peculiar velocities to estimate the Hubble constant \ho from the local volume without ``stepping up'' the distance ladder, finding a confidence range of 65-75\kmM (at 90% confidence)., Comment: 11 pages, 1 figure. Accepted for publication in MNRAS

Published
2001
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39. The luminosity dependence of clustering and higher order correlations in the PSCz survey

Author

István Szapudi, Carlos S. Frenk, Enzo Branchini, Steve Maddox, Will Saunders, Szapudi, I, Branchini, ENZO FRANCO, Frenk, C, Maddox, S, Saunders, W., and Astronomy

Subjects
Cold dark matter, UNIVERSE, FOS: Physical sciences, methods : numerical, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Correlation function (astronomy), Luminosity, GALAXY REDSHIFT SURVEY, LARGE-SCALE STRUCTURE, Galaxy formation and evolution, Cluster analysis, Astrophysics::Galaxy Astrophysics, Physics, Astrophysics (astro-ph), Astronomy and Astrophysics, Redshift survey, IRAS GALAXIES, CATALOG, Galaxy, Redshift, STATISTICS, SIMULATIONS, EVOLUTION, COLD DARK-MATTER, APM, Space and Planetary Science, large-scale structure of Universe
Abstract

We investigate the spatial clustering of galaxies in the PSCz galaxy redshift survey, as revealed by the two-point correlation function, the luminosity mark correlations, and the moments of counts-in-cells. We construct volume-limited subsamples at different depths, and search for a luminosity dependence of the clustering pattern. We find no statistically significant effect in either the two-point correlation function or the mark correlations and so we take each subsample (of different characteristic luminosity) as representing the same statistical process. We then carry out a counts-in-cells analysis of the volume-limited subsamples, including a rigorous error calculation based on the recent theory of Szapudi, Colombi and Bernardeau. In this way, we derive the best estimates to date of the skewness and kurtosis of IRAS galaxies in redshift space. Our results agree well with previous measurements in both the parent angular catalogue, and in the derived redshift surveys. This is in contrast with smaller, optically selected surveys, were there is a discrepancy between the redshift space and projected measurements. Predictions from cold dark matter theory, obtained using the recent semi-analytical model of galaxy formation of Benson {\it et al}, provide an excellent description of our clustering data., 6 pages, 3 figures, accepted for publication in MNRAS pink pages

Published
2000

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