University of Hertfordshire

Browsing by Author "Centre for Astrophysics Research"

University of Hertfordshire Research Archive

Help | UH Research Archive

Browsing by Author "Centre for Astrophysics Research"

Sort by:Order:Results:

  • Barnes, J R (2004-03-11)
    We demonstrate the use of singular value decomposition as a method for deconvolving high-resolution spectra of rapidly rotating stars. A convolution matrix can be built from the observed template spectrum of a slowly ...
  • Barnes, J R; Cameron, A C; Donati, J F; James, D J; Marsden, S C; Mengel, M; Petit, P (European Space Agency, 2005)
    In the Sun, global fluid circulation generates the large-scale magnetic field through cyclic dynamo action. Shear at the solar core/convection zone interface ensures that the convection zone does not rotate as a solid body. ...
  • Dunlop, J. S.; McLure, R. J.; Biggs, A. D.; Geach, J. E.; Michalowski, M. J.; Ivison, R. J.; Rujopakarn, W.; Kampen, E. van; Kirkpatrick, A.; Pope, A.; Scott, D.; Swinbank, A. M.; Targett, T. A.; Aretxaga, I.; Austermann, J. E.; Best, P. N.; Bruce, V. A.; Chapin, E. L.; Charlot, S.; Cirasuolo, M.; Coppin, K. E. K.; Ellis, R. S.; Finkelstein, S. L.; Hayward, C. C.; Hughes, D. H.; Ibar, E.; Khochfar, S.; Koprowski, M. P.; Narayanan, D.; Papovich, C.; Peacock, J. A.; Robertson, B.; Vernstrom, T.; Werf, P. P. van der; Wilson, G. W.; Yun, M. (2017-04-01)
    We present the results of the first, deep ALMA imaging covering the full 4.5 sq arcmin of the Hubble Ultra Deep Field (HUDF) as previously imaged with WFC3/IR on HST. Using a mosaic of 45 pointings, we have obtained a ...
  • Raddi, Roberto; Drew, J.E.; Steeghs, D. T. H.; Wright, Nick; Drake, J. J.; Barentsen, Geert; Fabregat, J.; Sale, S. E. (2015-01)
    We present a catalogue of 247 photometrically and spectroscopically confirmed fainter classical Be stars (13 ≲ r ≲ 16) in the direction of the Perseus Arm of the Milky Way (−1° < b < +4°, 120° < ℓ < 140°). The catalogue ...
  • Brassington, Nicola; Fabbiano, G.; Kim, D.-W.; Zezas, A.; Zepf, S.; Kundu, A.; Angelini, L.; Davies, R. L.; Gallagher, J.; Kalogera, V.; Fragos, T.; King, A.R.; Pellegrini, S.; Trinchieri, G. (2008-11-01)
    We present the properties of the discrete X-ray sources detected in our monitoring program of the `typical' elliptical galaxy, NGC 3379, observed with Chandra ACIS-S in five separate pointings, resulting in a co-added ...
  • Brassington, Nicola; Fabbiano, G.; Kim, D.-W.; Zezas, A.; Zepf, S.; Kundu, A.; Angelini, L.; Davies, R. L.; Gallagher, J.; Kalogera, V.; Fragos, T.; King, A.R.; Pellegrini, S.; Trinchieri, G. (2009-04-01)
    We present the properties of the discrete X-ray sources detected in our monitoring program of the globular cluster (GC) rich elliptical galaxy, NGC 4278, observed with Chandra ACIS-S in six separate pointings, resulting ...
  • Hardcastle, M. J.; Lenc, E.; Birkinshaw, M.; Croston, J. H.; Goodger, J. L.; Marshall, H. L.; Perlman, E. S.; Siemiginowska, A.; Stawarz, L.; Worrall, D. M. (2016-02-01)
    We report on deep Chandra observations of the nearby broad-line radio galaxy Pictor A, which we combine with new Australia Telescope Compact Array (ATCA) observations. The new X-ray data have a factor 4 more exposure than ...
  • Ibar, E.; Ivison, R.J.; Best, P.N.; Coppin, Kristen; Pope, A.; Smail, I.; Dunlop, J.S. (2010-01-01)
    We have employed the Giant Metre-wave Radio Telescope and the Very Large Array to map the Lockman Hole. At 610 and 1400 MHz, we reach noise levels of 15 and 6μJy beam , respectively, with well-matched resolutions (~5 ...
  • Mohr-Smith, M.; Drew, Janet; Napiwotzki, Ralf; Simon-Diaz, S.; Wright, N. J.; Barentsen, Geert; Eisloeffel, J.; Farnhill, Hywel; Greimel, R.; Monguio, Maria; Kalari, V.; Parker, Q. A.; Vink, Jorick S. (2017-02-21)
    Massive OB stars are critical to the ecology of galaxies and yet our knowledge of OB stars in the Milky Way, fainter than V ∼ 12, remains patchy. Data from the VST Photometric Hα Survey (VPHAS+) permit the construction of ...
  • Heesen, V.; Rau, U.; Rupen, M. P.; Brinks, E.; Hunter, D. A. (2011-09-20)
    We exploit the vastly increased sensitivity of the Expanded Very Large Array to study the radio continuum and polarization properties of the post-starburst, dwarf irregular galaxy IC 10 at 6 cm, at a linear resolution of ...
  • Brisbin, D.; Harwit, M.; Altieri, B.; Amblard, A.; Arumugam, V.; Aussel, H.; Babbedge, T.; Blain, A.; Bock, J.; Boselli, A.; Buat, V.; Castro-Rodríguez, N.; Cava, A.; Chanial, P.; Clements, D. L.; Conley, A.; Conversi, L.; Cooray, A.; Dowell, C.D.; Dwek, E.; Eales, S.; Elbaz, D.; Fox, M.; Franceschini, A.; Gear, W.; Glenn, J.; Griffin, M.; Halpern, M.; Hatziminaoglou, E.; Ibar, E.; Isaak, K.; Ivison, Rob J.; Lagache, G.; Levenson, L.; Lonsdale, C.J.; Lu, N.; Madden, S.; Maffei, B.; Mainetti, G.; Marchetti, L.; Morrison, G.E.; Nguyen, H.T.; O'Halloran, B.; Oliver, S.J.; Omont, A.; Owen, F.N.; Pannella, M.; Panuzzo, P.; Papageorgiou, A.; Pearson, C.P.; Pérez-Fournon, I.; Pohlen, M.; Rizzo, D.; Roseboom, I.G.; Rowan-Robinson, M.; Portal, M.S.; Schulz, B.; Seymour, N.; Shupe, D. L.; Smith, A.J.; Stevens, Jason; Strazzullo, V.; Symeonidis, M.; Trichas, M.; Tugwell, K.E.; Vaccari, M.; Valtchanov, I.; Vigroux, L.; Wang, L.; Ward, R.; Wright, G.; Xu, C.K.; Zemcov, M. (2010-11-01)
    We present the cross-identification and source photometry techniques used to process Herschel SPIRE imaging taken as part of the Herschel Multi-Tiered Extragalactic Survey (HerMES). Cross-identifications are performed in ...
  • Norris, R.P.; Afonso, J.; Cava, A.; Farrah, D.; Huynh, M.T.; Ivison, R.J.; Jarvis, M.J.; Lacy, M.; Mao, M.; Maraston, C.; Mauduit, J.C.; Middelberg, E.; Oliver, S.; Seymour, N.; Surace, J. (2011)
    Infrared-faint radio sources (IFRSs) are a rare class of objects which are relatively bright at radio wavelengths but very faint at infrared and optical wavelengths. Here we present sensitive near-infrared observations of ...
  • Heywood, I.; Jarvis, M. J.; Baker, A. J.; Bannister, K. W.; Carvalho, C. S.; Hardcastle, M.; Hilton, M.; Moodley, K.; Smirnov, O. M.; Smith, D. J. B.; White, S. V.; Wollack, E. J. (2016-08-21)
    We have used the Karl G. Jansky Very Large Array to image ~100 sq. deg. of SDSS Stripe 82 at 1-2 GHz. The survey consists of 1,026 snapshot observations of 2.5 minutes duration, using the hybrid CnB configuration. The ...
  • Pinfield, D.J.; Gomes, J.; Day-Jones, A. C.; Leggett, S.K.; Gromadzki, M.; Burningham, B.; Ruiz, M. T.; Kurtev, R.; Cattermole, T.; Cardoso, C.; Lodieu, N.; Faherty, J.; Littlefair, S.; Smart, R.; Irwin, M.; Clarke, J. R. A.; Smith, Leigh; Lucas, P.W.; Galvez-Ortiz, M. C.; Jenkins, J. S.; Jones, H.R.A.; Rebolo, R.; Bejar, V. J. S.; Gauza, B. (2014-01)
    A method is defined for identifying late-T and Y dwarfs in WISE down to low values of signal-to-noise. This requires a WISE detection only in the W2-band and uses the statistical properties of the WISE multiframe measurements ...
  • Kopytova, Taisiya G.; Crossfield, Ian J M; Deacon, Niall R.; Brandner, Wolfgang; Buenzli, Esther; Bayo, Amelia; Schlieder, Joshua E.; Manjavacas, Elena; Biller, Beth A.; Kopon, Derek (2014-11-17)
    WISE J085510.83-071442.5 (hereafter, WISE 0855-07) is the coolest Y dwarf known to date and is located at a distance of 2.31 ± 0.08 pc, giving it the fourth largest parallax of any known star or brown dwarf system. We ...
  • Shabala, Stanislav; Deller, Adam; Kaviraj, Sugata; Middelberg, Enno; Turner, Ross; Ting, Yuan-Sen; Allison, James; Davis, Tim (2017-02-01)
    We examine the processes triggering star formation and Active Galactic Nucleus (AGN) activity in a sample of 25 low redshift ($z 10^7$ K) brightness temperature required for an mJIVE-20 detection allows us to unambiguously ...
  • Rubio, Monica; Elmegreen, Bruce G.; Hunter, Deidre A.; Brinks, E.; Cortés, Juan R.; Cigan, Phil (2015-09-10)
    Understanding stellar birth requires observations of the clouds in which they form. These clouds are dense and self-gravitating, and in all existing observations they are molecular, with H2 the dominant species and carbon ...
  • Ginsburg, A.; Henkel, C.; Ao, Y.; Riquelme, D.; Kauffmann, J.; Pillai, T.; Mills, E.~A.~C.; Requena-Torres, M.~A.; Immer, K.; Testi, L.; Ott, J.; Bally, J.; Battersby, C.; Darling, J.; Aalto, S.; Stanke, T.; Kendrew, S.; Kruijssen, J.~M.~D.; Longmore, S.; Guesten, R.; Menten, K.~M.; Dale, James (2016-01-26)
    Context. The Galactic center is the closest region where we can study star formation under extreme physical conditions like those in high-redshift galaxies. Aims. We measure the temperature of the dense gas in the central ...
  • Jeffers, S V; Cameron, A C; Barnes, J R; Aufdenberg, J P; Hussain, G A J (European Space Agency, 2005)
    We have used spectrophotometric data from 9 HST orbits to eclipse-map the primary component of the RS CVn binary SV Cam. From these observations and SV Cam's HIPPARCOS parallax we find that the surface flux in the eclipsed ...
  • Jeffers, S. V.; Cameron, A. Collier; Barnes, J. R.; Aufdenberg, J. P. (2006-08)
    We have used spectrophotometric data from nine Hubble Space Telescope orbits to eclipse-map the primary component of the RS CVn binary SV Cam. From these observations and its HIPPARCOS parallax we find that the surface ...

Your requested file is now available for download. You may start your download by selecting the following link: test