Publications
320 results found
Hughes DH, Serjeant S, Dunlop J, et al., 1998, High-redshift star formation in the Hubble Deep Field revealed by a submillimetre-wavelength survey, NATURE, Vol: 394, Pages: 241-247, ISSN: 0028-0836
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- Citations: 1233
Canavezes A, Springel V, Oliver SJ, et al., 1998, The topology of the IRAS Point Source Catalogue Redshift Survey, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Vol: 297, Pages: 777-793, ISSN: 0035-8711
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- Citations: 56
Hopkins AM, Mobasher B, Cram L, et al., 1998, The Phoenix Deep Survey: 1.4-GHz source counts, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Vol: 296, Pages: 839-846, ISSN: 0035-8711
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- Citations: 110
McHardy IM, Jones LR, Merrifield MR, et al., 1998, The origin of the cosmic soft X-ray background: optical identification of an extremely deep ROSAT survey, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Vol: 295, Pages: 641-671, ISSN: 0035-8711
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- Citations: 97
McHardy IM, Jones LR, Merrifield MR, et al., 1998, The UK ROSAT Deep Survey, X-ray Surveys Workshop - To Mark the Occasion of the 35th Anniversary of the Birth of X-Ray Astronomy and the 7th Anniversary of the First Light of ROSAT, Publisher: WILEY-BLACKWELL, Pages: 51-54, ISSN: 0004-6337
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- Citations: 7
Oliver S, Rowan-Robinson M, Cesarsky C, et al., 1998, The European large area ISO survey: ELAIS, 179th Symposium of the International-Astronomical-Union on New Horizons from Multi-Wavelength Sky Surveys, Publisher: KLUWER ACADEMIC PUBL, Pages: 112-114, ISSN: 0074-1809
Rowan-Robinson M, 1998, The ISO survey of the Hubble Deep Field, Young Universe: Galaxy Formation and Evolution at Intermediate and High Redshift, Vol: 146, Pages: 118-125
Rowan-Robinson M, 1998, Infrared luminous galaxies and AGN, Science with the Ngst, Vol: 133, Pages: 119-128
Serjeant SBG, Eaton N, Oliver SJ, et al., 1997, Observations of the Hubble Deep Field with the Infrared Space Observatory .1. Data reduction, maps and sky coverage, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Vol: 289, Pages: 457-464, ISSN: 0035-8711
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- Citations: 42
Goldschmidt P, Oliver SJ, Serjeant SBG, et al., 1997, Observations of the Hubble Deep Field with the Infrared Space Observatory .2. Source detection and photometry, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Vol: 289, Pages: 465-470, ISSN: 0035-8711
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- Citations: 32
Oliver SJ, Goldschmidt P, Franceschini A, et al., 1997, Observations of the Hubble Deep Field with the Infrared Space Observatory .3. Source counts and P(D) analysis, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Vol: 289, Pages: 471-481, ISSN: 0035-8711
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- Citations: 84
RowanRobinson M, Mann RG, Oliver SJ, et al., 1997, Observations of the Hubble Deep Field with the Infrared Space Observatory .5. Spectral energy distributions, starburst models and star formation history, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Vol: 289, Pages: 490-496, ISSN: 0035-8711
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- Citations: 218
Mann RG, Oliver SJ, Serjeant SBG, et al., 1997, Observations of the Hubble Deep Field with the Infrared Space Observatory .4. Association of sources with Hubble Deep Field galaxies, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Vol: 289, Pages: 482-489, ISSN: 0035-8711
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- Citations: 42
Pearson CP, Rowan-Robinson M, McHardy IM, et al., 1997, Narrow-emission-line galaxies and the origin of the unresolved X-ray background, Monthly Notices of the Royal Astronomical Society, Vol: 288, Pages: 273-285, ISSN: 0035-8711
Recently, from deep observations utilizing the ROSAT PSPC in the 0.5-2 keV X-ray band, it has become apparent that there is the possibility of the existence of a large (1000-2000 deg-2) population of narrow-emission-line galaxies (NELGs) lying below the source counts of AGN at faint fluxes. Here it is assumed that these NELGs are a mix of Seyfert 2 and starburst galaxies that may be the higher redshift counterparts of the IRAS warm galaxies and are associated with the submJy radio population. Using luminosity functions defined in the infrared and assumptions about the average log(Lx/L60) ratio, an attempt is made to fit the new NELG source counts with a model incorporating pure luminosity evolution of the form L(z)=L(0)(l +z)k. Previous determinations of the local Seyfert 2 and starburst log(Lx/L60) ratio predict contributions to the NELG population of 26 and 5 per cent respectively by 5(0.5-2 keV) = 3 × 10-15 erg s-1 cm-2, but are found to be too low to fit the observed counts. A higher ratio, closer to that of broad-line AGN, is needed. The two populations are initially treated separately due to the present lack of a large statistical sample in current X-ray surveys. It is found that using a model with k=3.1, as previously used for QSOs and starburst galaxies, the source counts to the faintest limits can be fitted independently of the choice of energy index, αx. Decreasing the evolution to a lower rate of k = 2.5, we find that models utilizing a softer index (αx = 1.0) cannot fit the source counts at the faint fluxes. The contribution of the NELG population to the 1-2 keV X-ray background (XRB) is calculated. It is found that if the published value of the log(Lx/L60) ratio is used, both Seyfert 2 and starburst galaxies are expected to contribute between 4 and 10 per cent each of the 1-2 keV soft XRB. Fits of the NELG model to the source count observations produce a contribution of between 30 and 50 per cent and between 10 and 27 per cent for star
Jones LR, McHardy IM, Merrifield MR, et al., 1997, X-ray QSO evolution from a very deep ROSAT survey, Monthly Notices of the Royal Astronomical Society, Vol: 285, Pages: 547-560, ISSN: 0035-8711
In the deepest optically identified X-ray survey yet performed, we have identified 32 X-ray-selected QSOs to a flux limit of 2 × 10-15 erg cm-2 s-1 (0.5-2 keV). The survey, performed with the ROSAT Position Sensitive Proportional Counter (PSPC), has 89 per cent spectroscopic completeness. The QSO log(N)-log(S) relation is found to have a break to a flat slope at faint fluxes. The surface density of QSOs at the survey limit is 230 ± 40 per square degree, the largest so far of any QSO survey. We use this survey to measure the QSO X-ray luminosity function at low luminosities (LX<1044.5 erg s-1) and high redshifts (2<z<2.5). The highest redshift QSO in the survey has z = 3.4. Combined with the QSOs from the Einstein Extended Medium Sensitivity Survey (EMSS) at bright fluxes, we find pure luminosity evolution of the form LX ∝ (1 + z)3.0(+0.2,-0.3) is an adequate description of the evolution of the X-ray luminosity function at low redshifts. A redshift cut-off in the evolution is required at z = 1.4-0.17+0.4 (for q0=0.5). We discuss the form of this evolution, its dependence on the model assumed and the errors on the derived parameters. We show that most previous X-ray surveys, including the EMSS, are consistent with a power-law luminosity evolution index of 3.0. The contribution of QSOs to the 1-2 keV cosmic X-ray background is found to be between 31 and 51 per cent. © 1997 RAS.
Mobasher B, RowanRobinson M, Georgakakis A, et al., 1996, The nature of the faint galaxies in the Hubble Deep Field, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Vol: 282, Pages: L7-L13, ISSN: 0035-8711
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- Citations: 37
Clements DL, Sutherland WJ, Saunders W, et al., 1996, A new large sample of ultraluminous IRAS galaxies, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Vol: 279, Pages: 459-476, ISSN: 0035-8711
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- Citations: 61
Clements DL, Sutherland WJ, Saunders W, et al., 1996, A new large sample of Ultraluminous IRAS Galaxies, Vistas in Astronomy, Vol: 40, Pages: 215-219, ISSN: 0083-6656
We present the first results of a new survey of Ultraluminous IRAS Galaxies (ULIRGs). The survey uses a novel IR/Optical colour selection criterion designed to maximise the number of ULIRGs in the sample. We show that our technique is very successful in selecting ULIRGs, yielding a sample of 91 such objects. This is thus one of the largest samples of such objects currently available. We briefly discuss the luminosity function, the nature of the objects, and their possible relationship to quasars. Copyright ©1996 Elsevier Science Ltd.
KAISER N, EFSTATHIOU G, ELLIS R, et al., 1991, THE LARGE-SCALE DISTRIBUTION OF IRAS GALAXIES AND THE PREDICTED PECULIAR VELOCITY-FIELD, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Vol: 252, Pages: 1-12, ISSN: 0035-8711
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- Citations: 122
SAUNDERS W, FRENK C, ROWANROBINSON M, et al., 1991, THE DENSITY FIELD OF THE LOCAL UNIVERSE, NATURE, Vol: 349, Pages: 32-38, ISSN: 0028-0836
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- Citations: 325
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