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Browsing by Author "Centre for Astrophysics Research"

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  • Johansson, Jonas; Woods, Tyrone E.; Gilfanov, Marat; Sarzi, Marc; Chen, Yan Mei; Oh, Kyuseok (2014-08-01)
    We measure the strength of He II λ4686 nebular emission in passively evolving ('retired') galaxies, aiming to constrain their populations of hot accreting white dwarfs (WDs) in the context of the single-degenerate (SD) ...
  • Farrah, D.; Urrutia, T.; Lacy, Mark; Efstathiou, A.; Afonso, Jose; Coppin, Kristen; Hall, P.B.; Lonsdale, C.J.; Jarrett, Tom; Bridge, Carrie; Borys, C.; Petty, Sara (2012-02)
    We present optical to far-infrared photometry of 31 reddened QSOs that show evidence for radiatively driven outflows originating from active galactic nuclei (AGNs) in their rest-frame UV spectra. We use these data to study ...
  • Salter, Graeme S.; Tinney, Chris G.; Wittenmyer, Robert A.; Jenkins, James S.; Jones, H.R.A.; O'Toole, Simon J. (2013-06)
    We are finally entering an era where radial velocity and direct imaging parameter spaces are starting to overlap. Radial velocity measurements provide us with a minimum mass for an orbiting companion (the mass as a function ...
  • Rauscher, T.; Guber, K. H. (2002-08)
    Direct neutron capture on Ni-62 is calculated in the DWBA and the Maxwellian averaged cross sections and astrophysical reaction rates in the energy range relevant for s-process nucleosynthesis are given. It is confirmed ...
  • Krausmann, E.; Balogh, W.; Oberhummer, H.; Rauscher, T.; Kratz, K.L.; Ziegert, W. (1996-01)
    In neutron capture for magic-shell nuclei the direct reaction mechanism can be important and may even dominate. As an example we investigated the reaction Ca-48(n, gamma)Ca-49 for projectile energies below 250 keV in a ...
  • Riaz, B.; Lodieu, N.; Goodwin, S.; Stamatellos, D.; Thompson, M. (2012-03-01)
    We have investigated the brown dwarf (BD) and stellar disc fractions in the Upper Scorpius OB Association (USco) and compared them with several other young regions. We have compiled the most complete sample of of all ...
  • Witham, A.R.; Knigge, C.; Drew, J.E.; Groot, P.; Greimel, R.; Parker, Q. A. (American Institute of Physics, 2005)
    A deep (R ~ 19.5) photographic Hα Survey of the southern Galactic Plane was recently completed using the UK Schmidt Telescope at the AAO. In addition, we have recently started a similar, CCD-based survey of the northern ...
  • Fortney, J.J.; Nutzman, P.; Miller, N.; Demory, B.-O.; Seager, S.; Désert, J.-M.; Buchhave, L.A.; Charbonneau, D.; Fressin, F.; Latham, D.W.; Geary, J.C.; Rowe, J.; Caldwell, D.A.; Jenkins, J.M.; Christiansen, J.L.; Marcy, G.W.; Isaacson, H.; Howard, A.; Knutson, H.A.; Buchhave, L.A.; Ciardi, D.; Gautier, T.N.; Batalha, N.M.; Bryson, S.T.; Howell, S.B.; Borucki, W.J.; Koch, D.; Lissauer, J.J.; Haas, M.R.; Everett, M.; Deming, D.; Brown, T.M.; Ford, E.B.; Gilliland, R.L.; Fischer, D.A.; Still, M.; Lucas, P.W.; Gillon, M. (2011-11-01)
    We report the discovery of planet Kepler-12b (KOI-20), which at 1.695 ± 0.030 R is among the handful of planets with super-inflated radii above 1.65 R. Orbiting its slightly evolved G0 host with a 4.438 day period, this ...
  • Smith, Leigh; Lucas, P.W.; Peña, C. Contreras; Kurtev, R.; Marocco, Federico; Jones, H.R.A.; Beamin, J.C.; Napiwotzki, Ralf; Borissova, J.; Burningham, B.; Faherty, J.; Pinfield, D.J.; Gromadzki, M.; Ivanov, V.D.; Minniti, D.; Stimson, W.; Villanueva, V. (2015-12-21)
    We report the discovery of an L dwarf companion to the A3V star β Circini. VVV J151721.49−585131.5, or β Cir B, was identified in a proper motion and parallax catalogue of the VISTA Variables in the Vía Láctea survey as ...
  • Ouchi, Masami; Ono, Yoshiaki; Egami, Eiichi; Saito, Tomoki; Oguri, Masamune; McCarthy, Patrick J.; Farrah, Duncan; Kashikawa, Nobunari; Momcheva, Ivelina; Shimasaku, Kazuhiro; Nakanishi, Kouichiro; Furusawa, Hisanori; Akiyama, Masayuki; Dunlop, James S.; Mortier, Angela M. J.; Okamura, Sadanori; Hayashi, Masao; Cirasuolo, Michele; Dressler, Alan; Iye, Masanori; Jarvis, M.J.; Kodama, Tadayuki; Martin, Crystal L.; McLure, Ross J.; Ohta, Kouji; Yamada, Toru; Yoshida, Michitoshi (2009-05-10)
    We report the discovery of a giant Lyα emitter (LAE) with a Spitzer/Infrared Array Camera (IRAC) counterpart near the reionization epoch at z = 6.595. The giant LAE is found from the extensive 1 deg2 Subaru narrowband ...
  • Britt, C. T.; Maccarone, T. J.; Green, J. D.; Jonker, P. G.; Hynes, R. I.; Torres, M. A. P.; Strader, J.; Chomiuk, L.; Salinas, R.; Lucas, P.; Pena, C. Contreras; Kurtev, R.; Heinke, C.; Smith, L.; Wright, N. J.; Johnson, C.; Steeghs, D.; Nelemans, G. (2016-08-11)
    We report the detection of an infrared selected transient which has lasted at least 5 years, first identified by a large mid-infrared and optical outburst from a faint X-ray source detected with the Chandra X-ray Observatory. ...
  • Swinbank, A.M.; Edge, A.C.; Smail, I.; Stott, J.P.; Bremer, M.; Sato, Y.; van Breukelen, C.; Jarvis, M.J.; Waddington, I.; Clewley, L.; Bergeron, J.; Cotter, G.; Dye, S.; Geach, James; Gonzalez-Solares, E.; Hirst, P.; Ivison, R.J.; Rawlings, S.; Simpson, C.; Smith, G.P.; Verma, A.; Yamada, T. (2007)
  • Pinfield, D.J.; Gromadzki, M.; Gromadzki, M.; Leggett, S.K.; Gomes, J.; Lodieu, N.; Kurtev, R.; Day-Jones, A. C.; Ruiz, M. T.; Cook, N. J.; Morley, C.V.; Marley, M. S.; Marocco, F.; Smart, R.L.; Jones, H.R.A.; Lucas, P.W.; Beletsky, Y.; Ivanov, V. D.; Burningham, B.; Jenkins, J. S.; Cardoso, C.; Frith, J.; Clarke, J. R. A.; Gálvez-Ortiz, M. C.; Zhang, Z. (2014)
    © 2014 The Authors. We present a new Y dwarf, WISE J030449.03-270508.3, confirmed from a candidate sample designed to pick out low-temperature objects from the Wide-field Infrared Survey Explorer (WISE) data base. The new ...
  • Burningham, B.; Pinfield, D.J.; Leggett, S.K.; Tinney, C.G.; Liu, M.C.; Homeier, D.; West, A.A.; Day-Jones, A.C.; Huelamo, N.; Dupuy, T.J.; Zhang, Z.; Murray, D.N.; Lodieu, N.; Navascues, D.B.Y.; Folkes, S.; Galvez-Ortiz, M.C.; Jones, H.R.A.; Lucas, P.W.; Calderon, M.M.; Tamura, M. (2009)
    We report the discovery of a T8.5 dwarf, which is a companion to the M4 dwarf Wolf 940. [Please see original online abstract for complete version with correct notation]
  • Burningham, B.; Smith, Leigh; Cardoso, C. V.; Lucas, P.W.; Burgasser, A. J.; Jones, H.R.A.; Smart, R.L. (2014-05)
    We report the discovery of ULAS J131610.28+075553.0, an sdT6.5 dwarf in the UKIDSS Large Area Survey 2 epoch proper motion catalogue. This object displays significant spectral peculiarity, with the largest yet seen deviations ...
  • Day-Jones, Avril; Pinfield, D.J.; Ruiz, M.; Beaumont, H.; Burningham, B.; Gallardo, J.; Gianninas, A.; Bergeron, P.; Napiwotzki, Ralf; Jenkins, J.S.; Zhang, Z.H.; Murray, D.N.; Catalan, Silvia; Ines Gomes, Joana (2011)
    We present the discovery of the first T dwarf + white dwarf binary system LSPM 1459+0857 AB, confirmed through common proper motion and spectroscopy. The white dwarf is a high proper motion object from the LSPM catalogue ...
  • Burningham, B.; Leggett, S.K.; Lucas, P.W.; Pinfield, D.J.; Smart, R.L.; Day-Jones, A.C.; Jones, H.R.A.; Murray, D.N.; Nickson, E.; Tamura, M.; Zhang, Z.; Lodieu, N.; Tinney, C.G.; Zapatero Osorio, M.R. (2010)
    We report the discovery of a very cool d/sdL7+T7.5p common proper motion binary system, SDSS J1416+13AB, found by cross-matching the United Kingdom Infrared Telescope (UKIRT) Infrared Deep Sky Survey (UKIDSS) Large Area ...
  • Lucas, P.W.; Tinney, C. G.; Burningham, B.; Leggett, S. K.; Pinfield, D.J.; Smart, Richard; Jones, H.R.A.; Marocco, F.; Barber, Robert J.; Yurchenko, Sergei N.; Tennyson, Jonathan; Ishii, Miki; Tamura, Motohide; Day-Jones, Avril C.; Adamson, Andrew; Allard, France; Homeier, Derek (2010)
    We report the discovery of a very cool, isolated brown dwarf, UGPS 0722−05, with the United Kingdom Infrared Telescope Deep Sky Survey (UKIDSS) Galactic Plane Survey. The near-infrared spectrum displays deeper H2O and CH4 ...
  • Trinchieri, G.; Pellegrini, S.; Fabbiano, G.; Fu, R.; Brassington, Nicola; Zezas, A.; Kim, D.-W.; Gallagher, J.; Angelini, L.; Davies, R. L.; Kalogera, V.; King, A.R.; Zepf, S. (2008-12-01)
    We report the discovery of a faint (LX~4+/-1.5×1037 ergs s-1, 0.5-2 keV), outflowing gaseous hot interstellar medium (ISM) in NGC 3379. This represents the lowest X-ray luminosity ever measured from a hot phase of the ISM ...
  • Forde, K.P.; Gledhill, T. (2012-03)
    We present K-band integral field observations of the circumstellar envelope of the evolved star OH 231.8+4.2. Spatial and spectral information was simultaneously acquired using the SINFONI integral field unit, with adaptive ...

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