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astro-ph2008★ 99 cited

A new model for infrared and submillimetre counts

Michael Rowan-Robinson

A new model for source counts from 8-1100 m is presented, which agrees well with source-count data and the observed background spectrum. The model is similar to that of Rowan-Ro…

astro-ph2008★ 72 cited

Episodic Magnetic Bubbles and Jets: Astrophysical Implications from Laboratory Experiments

Andrea Ciardi, Sergey V. Lebedev, Adam Frank +6

Collimated outflows (jets) are ubiquitous in the universe appearing around sources as diverse as protostars and extragalactic supermassive blackholes. Jets are thought to be magnet…

astro-ph2008★ 17 cited

Howes et al. Reply

G. G. Howes, S. C. Cowley, W. Dorland +4

Howes et al. Reply to Comment on "Kinetic Simulations of Magnetized Turbulence in Astrophysical Plasmas" arXiv:0711.4355

astro-ph2008★ 113 cited

The JCMT Nearby Galaxies Legacy Survey I. Star Forming Molecular Gas in Virgo Cluster Spiral Galaxies

C. D. Wilson, B. E. Warren, F. P. Israel +20

We present large-area maps of the CO J=3-2 emission obtained at the James Clerk Maxwell Telescope for four spiral galaxies in the Virgo Cluster. We combine these data with publishe…

astro-ph2008★ 139 cited

Instability of the ACW model, and problems with massive vectors during inflation

Burak Himmetoglu, Carlo R. Contaldi, Marco Peloso

We prove that the anisotropic inflationary background of the Ackerman-Carroll-Wise model, characterized by a fixed-norm vector field, is unstable. We found the instability by expli…

astro-ph2008★ 426 cited

The UKIRT Wide Field Camera ZYJHK Photometric System: Calibration from 2MASS

S. T. Hodgkin, M. J. Irwin, P. C. Hewett +1

In this paper we describe the photometric calibration of data taken with the near-infrared Wide Field Camera (WFCAM) on the United Kingdom Infrared Telescope (UKIRT). The broadband…

astro-ph2008★ 184 cited

Results from the First Science Run of the ZEPLIN-III Dark Matter Search Experiment

V. N. Lebedenko, H. M. Araujo, E. J. Barnes +35

The ZEPLIN-III experiment in the Palmer Underground Laboratory at Boulby uses a 12kg two-phase xenon time projection chamber to search for the weakly interacting massive particles…

astro-ph2008★ 82 cited

Solar-like oscillations in the G8 V star tau Ceti

T. C. Teixeira, H. Kjeldsen, T. R. Bedding +8

We used HARPS to measure oscillations in the low-mass star tau Cet. Although the data were compromised by instrumental noise, we have been able to extract the main features of the…

astro-ph2008★ 58 cited

Mid- to Far-IR Emission and Star Formation in Early-Type Galaxies

L M Young, G J Bendo, Danielle Lucero

Many early-type galaxies have been detected at wavelengths of 24 to 160 micron, but the emission is usually dominated by heating from an AGN or from the evolved stellar population.…

astro-ph2008★ 12 cited

An IPHAS-based search for accreting very low-mass objects using VO tools

L. Valdivielso, E. L. Martin, H. Bouy +6

The main goal of this paper is to prove that accreting very low-mass stars and brown dwarfs can be identified in IPHAS, a Halpha emission survey of the northern Milky Way.Full expl…

astro-ph2008

The UKIRT Infrared Deep Sky Survey and the search for the most distant quasars

Daniel J. Mortlock, Mitesh Patel, Stephen J. Warren +5

The UKIRT Infrared Deep Sky Survey (UKIDSS) Large Area Survey (LAS) has the necessary combination of filters (Y, J, H and K), depth (Y <~ 20.2) and area coverage (~4000 deg^2) to d…

astro-ph2008★ 66 cited

High Spatial Resolution Galactic 3D Extinction Mapping with IPHAS

S. E. Sale, J. E. Drew, Y. C. Unruh +12

We present an algorithm ({\scshape mead}, for `Mapping Extinction Against Distance') which will determine intrinsic () colour, extinction, and distance for early-A to K4 s…

astro-ph2008★ 38 cited

MAMBO 1.2mm observations of luminous starbursts at z~2 in the SWIRE fields

C. J. Lonsdale, M. Polletta, A. Omont +19

We report on--off pointed MAMBO observations at 1.2 mm of 61 Spitzer-selected star-forming galaxies from the SWIRE survey. The sources are selected on the basis of bright 24um flux…

astro-ph2008★ 67 cited

A planetary nebula around nova V458 Vul undergoing flash ionization

R. Wesson, M. J. Barlow, R. L. M. Corradi +25

Nova V458 Vul erupted on 2007 August 8th and reached a visual magnitude of 8.1 a few days later. H images obtained six weeks before the outburst as part of the IPHAS galactic pl…

astro-ph2008★ 8 cited

Photometric constraints on white dwarfs and the identification of extreme objects

Daniel J. Mortlock, Hiranya V. Peiris, Zeljko Ivezic

It is possible to reliably identify white dwarfs (WDs) without recourse to spectra, instead using photometric and astrometric measurements to distinguish them from Main Sequence st…

astro-ph2008★ 75 cited

Discovery of a redshift 6.13 quasar in the UKIRT Infrared Deep Sky Survey

D. J. Mortlock, M. Patel, S. J. Warren +10

Optical and near-infrared (NIR) spectra are presented for ULAS J131911.29+095951.4 (hereafter ULAS J1319+0950), a new redshift z = 6.127 +/- 0.004 quasar discovered in the Third Da…

astro-ph2008★ 7 cited

Super-horizon cosmic string correlations

Arttu Rajantie

When gauged cosmic strings form in a symmetry-breaking phase transition, the gauge field configuration at the time becomes imprinted in the spatial string distribution by the flux…

astro-ph2008★ 222 cited

Instability of anisotropic cosmological solutions supported by vector fields

Burak Himmetoglu, Carlo R. Contaldi, Marco Peloso

Models with vector fields acquiring a non-vanishing vacuum expectation value along one spatial direction have been proposed to sustain a prolonged stage of anisotropic accelerated…

astro-ph2008★ 216 cited

AEGIS-X: The Chandra Deep Survey of the Extended Groth Strip

E. S. Laird, K. Nandra, A. Georgakakis +11

We present the AEGIS-X survey, a series of deep Chandra ACIS-I observations of the Extended Groth Strip. The survey comprises pointings at 8 separate positions, each with nominal e…

astro-ph2008★ 49 cited

The Imperial IRAS-FSC Redshift Catalogue (IIFSCz)

Lingyu Wang, Michael Rowan-Robinson

We present a new catalogue, the Imperial IRAS-FSC Redshift Catalogue (IIFSCz), of 60,303 galaxies selected at 60 micron from the IRAS Faint Source Catalogue (FSC). The IIFSCz consi…

astro-ph2008★ 51 cited

Numerical experiments on dynamo action in sheared and rotating turbulence

T. A. Yousef, T. Heinemann, F. Rincon +5

Numerical simulations of forced turbulence in elongated shearing boxes are carried out to demonstrate that a nonhelical turbulence in conjunction with a linear shear can give rise…

astro-ph2008★ 60 cited

On the nature of unabsorbed Seyfert 2 galaxies

Murray Brightman, Kirpal Nandra

We present an analysis of six 12 um selected Seyfert 2 galaxies that have been reported to be unabsorbed in the X-ray. By comparing the luminosities of these galaxies in the mid-IR…

astro-ph2008★ 21 cited

Extremely red stellar objects revealed by IPHAS

N. J. Wright, R. Greimel, M. J. Barlow +13

We present photometric analysis and follow-up spectroscopy for a population of extremely red stellar objects extracted from the point-source catalogue of the INT Photometric H-Alph…

astro-ph2008★ 37 cited

X-ray selected AGN in groups at redshifts z~1

A. Georgakakis, Brian F. Gerke, K. Nandra +4

We explore the role of the group environment in the evolution of AGN at the redshift interval 0.7<z<1.4, by combining deep Chandra observations with extensive optical spectroscopy…