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Your search keyword '"Eales, SA"' showing total 3 results
Start Over Author "Eales, SA" Topic astrophysics::cosmology and extragalactic astrophysics
3 results on '"Eales, SA"'

1. Mapping the interstellar medium in galaxies with Herschel

Author

Eales, SA, Smith, MWL, Wilson, CD, Bendo, GJ, Cortese, L, Pohlen, M, Boselli, A, Gomez, HL, Auld, R, Baes, Maarten, Barlow, MJ, Bock, JJ, Bradford, M, Buat, V, Castro-Rodriguez, N, Chanial, P, Charlot, S, Ciesla, L, Clements, DL, Cooray, A, Cormier, D, Davies, JI, Dwek, E, Elbaz, D, Galametz, M, Galliano, F, Gear, WK, Glenn, J, Griffin, M, Hony, S, Isaak, KG, Levenson, LR, Lu, N, Madden, S, O'Halloran, B, Okumura, K, Oliver, S, Page, MJ, Panuzzo, P, Papageorgiou, A, Parkin, TJ, Perez-Fournon, I, Rangwala, N, Rigby, EE, Roussel, H, Rykala, A, Sacchi, N, Sauvage, M, Schulz, B, Schirm, MRP, Spinoglio, L, Srinivasan, S, Stevens, JA, Symeonidis, M, Trichas, M, Vaccari, M, Vigroux, L, Wozniak, H, Wright, GS, and Zeilinger, WW

Subjects
abundances [ISM], STAR-FORMATION LAW, ISM [galaxies], extinction, Astrophysics::High Energy Astrophysical Phenomena, CLOUD MASSES, Astrophysics::Cosmology and Extragalactic Astrophysics, ATLAS, I, MOLECULAR GAS, spiral [galaxies], Physics and Astronomy, NEARBY GALAXIES, dust, COLD DUST, EMISSION, SPIRAL GALAXIES, Astrophysics::Galaxy Astrophysics
Abstract

The standard method of mapping the interstellar medium in a galaxy, by observing the molecular gas in the CO 1-0 line and the atomic gas in the 21-cm line, is largely limited with current telescopes to galaxies in the nearby universe. In this letter, we use SPIRE observations of the galaxies M99 and M100 to explore the alternative approach of mapping the interstellar medium using the continuum emission from the dust. We have compared the methods by measuring the relationship between the star-formation rate and the surface density of gas in the galaxies using both methods. We find the two methods give relationships with a similar dispersion, confirming that observing the continuum emission from the dust is a promising method of mapping the interstellar medium in galaxies.

Published
2010

2. Studies of a sample of 6C radio galaxies at redshift one, I -- Deep multi-frequency radio observations

Author

Best, PN, Eales, SA, Rawlings, S, ottgering, HJAR, and Longair, MS

Subjects
Astrophysics::High Energy Astrophysical Phenomena, Astrophysics (astro-ph), FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract

Deep radio observations at 5 and 8 GHz are presented of a complete sample of 11 radio galaxies with redshifts 0.85 < z < 1.5, selected from the 6C sample of Eales. The radio data, taken using the VLA in A, B and C array configurations, provide a best angular resolution of 0.25'' and reach an rms noise level of order 20 microJy. Radio core candidates are detected in 8 of the 11 sources. 9 of the 11 sources display deviations from `standard double radio source' morphologies, with multiple hotspots or a hotspot withdrawn from the leading edge of the radio emission. The sources are typically polarised at the 5 to 15% level. The mean rotation measures of the individual lobes are less than 50 rad/m^2 but strong asymmetries between the two lobes indicate that the Faraday rotation does not have a Milky Way origin; rather, the distant 6C radio sources lie in a relatively dense clumpy environment. The sources are compared with the more radio powerful distant 3CR radio galaxies and with low redshift sources. The ratio of core to extended radio flux is almost independent of the radio source size and only weakly inversely correlated with the total radio power. This indicates that the high radio luminosity of the most powerful radio sources must originate in the AGN, in contrast to the suggestion that they are so luminous only due to confinement by a dense surrounding environment. Environmental effects play a secondary role. (Abridged), 31 pages LaTeX (of which 22 pages of figures). Accepted for publication in MNRAS

Published
1998

3. First results from HerMES on the evolution of the submillimetre luminosity function

Author

Simon Dye, Bruno Altieri, V. Buat, Walter Kieran Gear, Antonio Cava, Rob Ivison, S. C. Madden, Jamie Stevens, C. D. Dowell, N. Castro-Rodriguez, Tom Babbedge, Asantha Cooray, Angela M. J. Mortier, A. Boselli, Robbie Richard Auld, D. Elbaz, G. E. Morrison, Robyn L. Ward, Andrew Blain, Nick Seymour, Gwenifer Raymond, K. Xu, Michael Pohlen, Duncan Farrah, L. Vigroux, Frazer N. Owen, Dimitra Rigopoulou, Isaac Roseboom, Lucia Marchetti, I. Perez-Fournon, Maurilio Pannella, Michael Rowan-Robinson, E. Dwek, David L. Shupe, G. Mainetti, Luca Conversi, D. Rizzo, Matthew Joseph Griffin, K. E. Tugwell, H. Aussel, V. Arumugam, Stephen Anthony Eales, Chris Pearson, A. Conley, Lingyu Wang, M. Trichas, M. Sanchez Portal, Douglas Scott, M. J. Page, Alberto Franceschini, Evanthia Hatziminaoglou, Denis Burgarella, M. Fox, Edo Ibar, Bruno Maffei, A. Amblard, Mattia Vaccari, V. Strazzullo, Michael Zemcov, P. Chanial, J. J. Bock, L. R. Levenson, Hien Nguyen, Nanyao Y. Lu, M. Symeonidis, Benjamin L. Schulz, David L. Clements, Drew Brisbin, Jason Glenn, Gillian S. Wright, Andreas Papageorgiou, C. J. Lonsdale, J.-S. Huang, P. Panuzzo, Seb Oliver, A. Omont, B. O'Halloran, I. Valtchanov, Martin Harwit, A. J. Smith, E. A. González Solares, Jonathan Rawlings, K. G. Isaak, Guilaine Lagache, Eales, Sa, Raymond, G, Roseboom, Ig, Altieri, B, Amblard, A, Arumugam, V, Auld, R, Aussel, H, Babbedge, T, Blain, A, Bock, J, Boselli, A, Brisbin, D, Buat, V, Burgarella, D, Castro-Rodriguez, N, Cava, A, Chanial, P, Clements, Dl, Conley, A, Conversi, L, Cooray, A, Dowell, Cd, Dwek, E, Dye, S, Elbaz, D, Farrah, D, Fox, M, Franceschini, A, Gear, W, Glenn, J, Solares, Eag, Griffin, M, Harwit, M, Hatziminaoglou, E, Huang, J, Ibar, E, Isaak, K, Ivison, Rj, Lagache, G, Levenson, L, Lonsdale, Cj, Lu, N, Madden, S, Maffei, B, Mainetti, G, Marchetti, L, Morrison, Ge, Mortier, Amj, Nguyen, Ht, O'Halloran, B, Oliver, Sj, Omont, A, Owen, Fn, Page, Mj, Pannella, M, Panuzzo, P, Papageorgiou, A, Pearson, Cp, Perez-Fournon, I, Pohlen, M, Rawlings, Ji, Rigopoulou, D, Rizzo, D, Rowan-Robinson, M, Portal, M, Schulz, B, Scott, D, Seymour, N, Shupe, Dl, Smith, Aj, Stevens, Ja, Strazzullo, V, Symeonidis, M, Trichas, M, Tugwell, Ke, Vaccari, M, Valtchanov, I, Vigroux, L, Wang, L, Ward, R, Wright, G, Xu, Ck, Zemcov, M, Observatoire Astronomique de Marseille Provence (OAMP), Université de Provence - Aix-Marseille 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Canada-France-Hawaii Telescope Corporation (CFHT), National Research Council of Canada (NRC)-Centre National de la Recherche Scientifique (CNRS)-University of Hawai'i [Honolulu] (UH), Institut d'Astrophysique de Paris (IAP), and Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, submillimeter: galaxies, Spiral galaxy, Cosmology and Nongalactic Astrophysics (astro-ph.CO), [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], Significant part, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Redshift, Spire, Stars, Space and Planetary Science, galaxies: high-redshift, [SDU]Sciences of the Universe [physics], galaxies: formation, Astrophysics::Earth and Planetary Astrophysics, galaxies: evoluton, Astrophysics::Galaxy Astrophysics, Luminosity function (astronomy), QB, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We have carried out two extremely deep surveys with SPIRE, one of the two cameras on Herschel, at 250 microns, close to the peak of the far-infrared background. We have used the results to investigate the evolution of the rest-frame 250-micron luminosity function out to z=2. We find evidence for strong evolution out to a redshift of around 1 but evidence for at most weak evolution beyond this redshift. Our results suggest that a significant part of the stars and metals in the Universe today were formed at z, Astronomy and Astrophysics, Herschel Special Issue, in press as a Letter; 5 pages

Published
2016
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