Browsing University of Hertfordshire by Title

Now showing items 5497-5516 of 24062

    • Discovery and Implications of a new large-scale stellar bar in NGC 5248 

      Jogee, S.; Knapen, J.; Laine, S.; Shlosman, I.; Scoville, N.Z.; Englmaier, P. (2002-05)

    • Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager 

      Macintosh, B.; Graham, J. R.; Barman, T.; Rosa, R. J. De; Konopacky, Q.; Marley, M. S.; Marois, C.; Nielsen, E. L.; Pueyo, L.; Rajan, A.; Rameau, J.; Saumon, D.; Wang, J. J.; Patience, J.; Ammons, M.; Arriaga, P.; Artigau, E.; Beckwith, S.; Brewster, J.; Bruzzone, S.; Bulger, J.; Burningham, B.; Burrows, A. S.; Chen, C.; Chiang, E.; Chilcote, J. K.; Dawson, R. I.; Dong, R.; Doyon, R.; Draper, Z. H.; Duchêne, G.; Esposito, T. M.; Fabrycky, D.; Fitzgerald, M. P.; Follette, K. B.; Fortney, J. J.; Gerard, B.; Goodsell, S.; Greenbaum, A. Z.; Hibon, P.; Hinkley, S.; Cotten, T. H.; Hung, L. -W.; Ingraham, P.; Johnson-Groh, M.; Kalas, P.; Lafreniere, D.; Larkin, J. E.; Lee, J.; Line, M.; Long, D.; Maire, J.; Marchis, F.; Matthews, B. C.; Max, C. E.; Metchev, S.; Millar-Blanchaer, M. A.; Mittal, T.; Morley, C. V.; Morzinski, K. M.; Murray-Clay, R.; Oppenheimer, R.; Palmer, D. W.; Patel, R.; Perrin, M. D.; Poyneer, L. A.; Rafikov, R. R.; Rantakyrö, F. T.; Rice, E. L.; Rojo, P.; Rudy, A. R.; Ruffio, J. -B.; Ruiz, M. T.; Sadakuni, N.; Saddlemyer, L.; Salama, M.; Savransky, D.; Schneider, A. C.; Sivaramakrishnan, A.; Song, I.; Soummer, R.; Thomas, S.; Vasisht, G.; Wallace, J. K.; Ward-Duong, K.; Wiktorowicz, S. J.; Wolff, S. G.; Zuckerman, B. (2015-10-02)
      Directly detecting thermal emission from young extrasolar planets allows measurement of their atmospheric composition and luminosity, which is influenced by their formation mechanism. Using the Gemini Planet Imager, we ...

    • Discovery of 24 radio-bright quasars at $4.9 \leq z \leq6.6$ using low-frequency radio observations 

      Gloudemans, A. J.; Duncan, K. J.; Saxena, A.; Harikane, Y.; Hill, G. J.; Zeimann, G. R.; Rottgering, H. J. A.; Yang, D.; Best, P. N.; Banados, E.; Drabent, A.; Hardcastle, M. J.; Hennawi, J. F.; Lansbury, G.; Magliocchetti, M.; Miley, G. K.; Nanni, R.; Shimwell, T. W.; Smith, D. J. B.; Venemans, B.P.; Wagenveld, J. D. (2022-12-31)
      High redshift quasars ($z>5$) that also shine brightly at radio wavelengths are unique signposts of supermassive black hole activity in the early universe. However, bright radio sources at $z\ge5$ are extremely rare and ...

    • Discovery of a brown dwarf companion to the A3V star β Circini 

      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 ...

    • Discovery of a Giant Lyα Emitter Near the Reionization Epoch 

      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 ...

    • Discovery of a helium-core white dwarf progenitor 

      Heber, U.; Edelmann, H.; Lisker, T.; Napiwotzki, R. (2003-12)

    • Discovery of a Long-Lived, High Amplitude Dusty Infrared Transient 

      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. ...

    • The discovery of a massive supercluster at z = 0.9 in the UKIDSS Deep eXtragalactic Survey 

      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)

    • Discovery of a mid-infrared protostellar outburst of exceptional amplitude 

      Lucas, P. W.; Elias, Jay; Points, Sean; Guo, Z.; Stecklum, B.; Vorobyov, E.; Morris, C.; Borissova, J.; Kurtev, R.; Pena, C. Contreras; Medina, N.; Minniti, D.; Ivanov, V. D.; Saito, R. K. (2020-09-23)
      We report the discovery of a mid-infrared outburst in a Young Stellar Object (YSO) with an amplitude close to 8 mag at lambda ~ 4.6 microns. WISEA J142238.82-611553.7 is one of 23 highly variable WISE sources discovered ...

    • Discovery of a multiply lensed submillimeter galaxy in early HerMES Herschel/SPIRE data 

      Conley, A.; Cooray, A.; Vieira, J.; Solares, E.A.G.; Kim, S.; Aguirre, J.E.; Amblard, A.; Auld, R.; Baker, A.J.; Beelen, A.; Blain, A.W.; Blundell, R.; Bock, J.; Bradford, C.M.; Bridge, C.; Brisbin, D.; Burgarella, D.; Carpenter, J.M.; Chanial, P.; Chapin, E.; Christopher, N.; Clements, D.; Cox, P.; Djorgovski, S.G.; Dowell, C.D.; Eales, S.; Earle, L.; Ellsworth-Bowers, T.P.; Farrah, D.; Franceschini, A.; Frayer, D.; Fu, H.; Gavazzi, R.; Glenn, J.; Griffin, M.; Gurwell, M.A.; Halpern, M.; Ibar, E.; Ivison, R.J.; Jarvis, M.J.; Kamenetzky, J.; Krips, M.; Levenson, L.; Lupu, R.; Mahabal, A.; Maloney, P.D.; Maraston, C.; Marchetti, L.; Marsden, G.; Matsuhara, H.; Mortier, A.M.J.; Murphy, E.; Naylor, B.J.; Neri, R.; Nguyen, H.T.; Oliver, S.; Omont, A.; Page, M.J.; Papageorgiou, A.; Pearson, C.; Perez-Fournon, I.; Pohlen, M.; Rangwala, N.; Rawlings, J.I.; Raymond, G.; Riechers, D.; Rodighiero, G.; Roseboom, I.G.; Rowan-Robinson, M.; Schulz, B.; Scott, D.; Scott, K.; Serra, P.; Seymour, N.; Shupe, D.; Smith, A.J.; Symeonidis, M.; Tugwell, K.E.; Vaccari, M.; Valiante, E.; Valtchanov, I.; Verma, A.; Viero, M.P.; Vigroux, L.; Wang, L.; Wiebe, D.; Wright, G.; Xu, C.K.; Zeimann, G.; Zemcov, M.; Zmuidzinas, J. (2011)
      We report the discovery of a bright (f (250 μm)>400 mJy), multiply lensed submillimeter galaxy HERMES J105751.1+573027 in Herschel/SPIRE Science Demonstration Phase data from the HerMES project. Interferometric 880 μm ...

    • Discovery of a nearby L-T transition object in the Southern Galactic plane 

      Folkes, S.; Pinfield, D.J.; Kendall, T.R.; Jones, H.R.A. (2007)

    • Discovery of a new nearby globular cluster with extreme kinematics located in the extension of a halo stream 

      Minniti, Dante; Fernández-Trincado, José G.; Gómez, Matías; Smith, Leigh C.; Lucas, Philip W.; Ramos, R. Contreras (2021-06-01)
      Context. We report the discovery of VVV-CL160, a new nearby globular cluster (GC) with extreme kinematics, located in the Galactic plane at l = 10.1477 deg, b = 0.2999 deg. Aims. We aim to characterize the physical properties ...

    • Discovery of a new soft gamma repeater: SGR J0418+5729 

      van der Horst, A.J.; Connaughton, V.; Kouveliotou, C.; Gogus, E.; Kaneko, Y.; Wachter, S.; Briggs, M.S.; Granot, J. (2010)
      On 2009 June 5, the Gamma-ray Burst Monitor (GBM) onboard the Fermi Gamma-ray Space Telescope triggered on two short and relatively dim bursts with spectral properties similar to soft gamma repeater (SGR) bursts. Independent ...

    • Discovery of a new Y dwarf: WISE J030449.03-270508.3 

      Pinfield, D.J.; 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. (2014-10-21)
      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 object is typed Y0pec ...

    • Discovery of a peculiar DQ white dwarf 

      Carollo, D.; Hodgkin, S.T.; Spagna, A.; Smart, R.L.; Lattanzi, M.G.; McLean, B.J.; Pinfield, D.J. (2002)

    • Discovery of a precessing jet nozzle in BL Lacertae 

      Stirling, A.M.; Cawthorne, T.V.; Stevens, J. A.; Jorstad, S.G.; Marscher, A.P.; Lister, M.; Gomez, J-L.; Smith, P.S.; Agudo, I.; Gabuzda, D.; Robson, E.I.; Gear, W.K. (2003)

    • The discovery of a radio galaxy of at least 5 Mpc 

      Oei, Martijn S. S. L.; Weeren, Reinout J. van; Hardcastle, Martin J.; Botteon, Andrea; Shimwell, Tim W.; Dabhade, Pratik; Gast, Aivin R. D. J. G. I. B.; Röttgering, Huub J. A.; Brüggen, Marcus; Tasse, Cyril; Williams, Wendy L.; Shulevski, Aleksandar (2022-04-01)
      Context. Giant radio galaxies (GRGs, or colloquially giants) are the Universes largest structures generated by individual galaxies. They comprise synchrotron-radiating active galactic nucleus ejecta and attain cosmological ...

    • Discovery of a redshift 6.13 quasar in the UKIRT infrared deep sky survey 

      Mortlock, D.J.; Patel, M.; Warren, S.J.; Venemans, B.P.; McMahon, R.G.; Hewett, P.C.; Simpson, C.; Sharp, R.G.; Burningham, B.; Dye, S.; Ellis, S.; Gonzales-Solares, E.; Huelamo, N. (2009)
      Optical and near-infrared (NIR) spectra are presented for ULAS J131911.29+095051.4 (hereafter ULAS J1319+0950), a new redshift z = 6.127 0.004 quasar discovered in the Third Data Release (DR3) of the UKIRT Infrared Deep ...

    • Discovery of a T dwarf + white dwarf binary system 

      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 ...

    • The discovery of a T6.5 subdwarf 

      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 ...