Search Publications
The complete submillimetre spectrum of NGC 891
Bernard, J. -P.; Dupac, X.; Giard, M. +8 more
Submillimetre maps of NGC 891 have been obtained with the Programme National d'Observations Submillimétriques (PRONAOS) balloon-borne telescope and with the Infrared Space Observatory Photopolarimeter (ISOPHOT) on board the ISO satellite. In this article, we also gather data from the Infrared Astronomical Satellite (IRAS) and the Submillimetre Com…
FUSE and HST ultraviolet observations of the disc wind of RW Sextantis
Knigge, C.; Prinja, R. K.; Long, K. S. +4 more
We present Far Ultraviolet Spectroscopic Explorer (FUSE) satellite time-series data of the low-inclination, nova-like cataclysmic variable RW Sex. The data span the wavelength range between ~905 and 1188Å, which contains the resonance lines of CIII, NIII, SIV, PV, SVI and OVI. All these spectral lines are present in the form of blueshifted absorpt…
XMM-Newton observations of the polars EV UMa, RX J1002-19 and RX J1007-20
Cropper, Mark; Ramsay, Gavin
We present XMM-Newton data of three strongly magnetic cataclysmic variables (polars) EV UMa, RX J1002-19 and RX J1007-20. These include the polar with the shortest orbital period (EV UMa) and the polar with one of the highest magnetic field strengths (RX J1007-20). They exhibit a range of X-ray spectral characteristics which are consistent with th…
XMM-Newton observation of the X-ray point source population of the starburst galaxy IC 342
Kong, Albert K. H.
We present the results of an XMM-Newton observation of the starburst galaxy IC 342. Thirty-seven X-ray point sources were detected down to a luminosity limit of ~1037 erg s-1. Most of the sources are located near the spiral arms. The X-ray point source luminosity function is consistent with a power-law shape with a slope of 0…
Observations of the neutral gas and dust in the radio galaxy 3C 305
Beswick, R.; Leahy, J. P.; Sparks, W. B. +5 more
We present MERLIN and Hubble Space Telescope (HST) observations of the central region of the nearby radio galaxy 3C 305 and use them to study the gas and dust in this object. The MERLIN observations are of neutral hydrogen (HI) absorption against the strong non-thermal 20 cm continuum seen towards the central 4 kpc of 3C 305. Our ~0.2 arcsec (160 …
Serendipitous active galactic nuclei in the XMM-Newton fields of Markarian 205 and QSO 0130-403
O'Brien, P. T.; Reeves, J. N.; Page, K. L. +2 more
The X-ray spectra of serendipitously observed active galactic nuclei (AGN) in the XMM-Newton fields of Mrk 205 and QSO 0130-403 are analysed. The sample consists of 23 objects, none of which is detected at radio frequencies, with a median X-ray luminosity of ~4 × 1044 erg s-1 and redshifts ranging from ~0.1 to just over 3. Th…
Fitting optical source counts with an infrared-defined model: insights into galaxy evolution
Rowan-Robinson, M.; King, A. J.
In order to improve the fit to the optical counts, the recent multiwavelength source count model of Rowan-Robinson is improved in two ways. First, density evolution is incorporated to correspond to the mergers in hierarchical models of galaxy formation. Secondly, the evolution of dust opacity is taken into account. The luminosity and density evolu…
Crystalline water ice in OH32.8-0.3
Maldoni, M. M.; Robinson, G.; Wright, C. M. +2 more
The 2.2-200 µm spectrum of OH32.8-0.3 has been modelled. Mie theory and radiative transfer models of the 3-µm band of H2O ice are consistent with a strongly crystalline structural phase. This is also confirmed by the presence of a 44/62-µm band complex analogous to that of laboratory crystalline H2O ice anal…
A far-infrared view of the Lockman Hole from ISO 95-µm observations - I. A new data reduction method
Rodighiero, G.; Franceschini, A.; Lari, C. +2 more
We report results from a new analysis of a deep 95-µm imaging survey with the photopolarimeter ISOPHOT on-board the Infrared Space Observatory, over a 40 × 40 arcmin2 area within the Lockman Hole. To this end we exploit a newly developed parametric algorithm able to identify and clean spurious signals induced by cosmic rays impact…
Mid-infrared imaging of the dust shell around the post-asymptotic giant branch star HD 161796
Gledhill, T. M.; Yates, J. A.
We present mid-infrared (IR) images of HD 161796 (IRAS 17436+5003), taken with the OSCIR imager on the Gemini North Telescope, that resolve for the first time the thermal emission structure of the dust shell around this post-asymptotic giant branch (AGB) star. As well as a basic axisymmetric structure, the observations show deviations from axisymm…