Browsing by Author "Steele, I.A."

Now showing items 1-10 of 10

    • Brown Dwarfs and low-mass stars in the Pleiades and Praesepe: membership and binarity 

      Pinfield, D.J.; Dobbie, P.D.; Jameson, R.F.; Steele, I.A.; Jones, H.R.A.; Katsiyannis, A. C. (2003)
      We present near infrared J-, H- and K-band photometry and optical spectroscopy of low-mass star and brown dwarf (BD) candidates in the Pleiades and Praesepe open clusters. We flag non-members from their position in K, I-K ...

    • Crossing into the substellar regime in Praesepe 

      Chappelle, R.J.; Pinfield, D.J.; Steele, I.A.; Dobbie, P.D.; Magazzu, A. (2005)

    • The Early-Time Optical Properties of Gamma-Ray Burst Afterglows 

      Melandri, A.; Mundell, C.G.; Kobayashi, S.; Guidorzi, C.; Gomboc, A.; Steele, I.A.; Smith, R.J.; Bersier, D.; Mottram, C.J.; Carter, D.; Bode, M.F.; O'Brien, P.T.; Tanvir, N.; Rol, E.; Chapman, R. (2008)
      We present a multiwavelength analysis of 63 gamma-ray bursts observed with the world's three largest robotic optical telescopes, the Liverpool and Faulkes Telescopes (North and South). Optical emission was detected for 24 ...

    • Finding benchmark brown dwarfs to probe the sub-stellar IMF as a function of time 

      Pinfield, D.J.; Jones, H.R.A.; Lucas, R.A.; Kendall, T.R.; Folkes, S.; Day-Jones, A.C.; Chappelle, R.J.; Steele, I.A. (2006)

    • GRB 090902B: afterglow observations and implications 

      Pandey, S.B.; Swenson, C.A.; Perley, D.A.; Guidorzi, C.; Wiersema, K.; Malesani, D.; Akerlof, C.; Ashley, M.C.B.; Bersier, D.; Cano, Z.; Gomboc, A.; Ilyin, I.; Jakobsson, P.; Kleiser, I.K.W.; Kobayashi, S.; Kouveliotou, C.; Levan, A.; McKay, T.A.; Melandri, A.; Mottram, C.J.; Mundell, C.G.; O'Brien, P.T.; Phillips, A.; Rex, J.M.; Siegel, M.H.; Smith, R.J.; Steele, I.A.; Stratta, G.; Tanvir, N.; Weights, D.; Yost, S.A.; Yuan, F.; Zheng, W. (2010)
      The optical-infrared afterglow of the Large Area Telescope (LAT)-detected long-duration burst, GRB 090902B, has been observed by several instruments. The earliest detection by ROTSE-IIIa occurred 80 minutes after detection ...

    • MOA-2011-BLG-262Lb : A sub-earth-mass moon orbiting a gas giant primary or a high velocity planetary system in the galactic bulge 

      Bennett, D. P.; Batista, V.; Bond, I. A.; Bennett, C. S.; Suzuki, D.; Beaulieu, J. P.; Udalski, A.; Donatowicz, J.; Bozza, V.; Abe, F.; Botzler, C. S.; Freeman, M.; Fukunaga, D.; Fukui, A.; Itow, Y.; Koshimoto, N.; Ling, C. H.; Masuda, K.; Matsubara, Y.; Muraki, Y.; Namba, S.; Ohnishi, K.; Rattenbury, N. J.; Saito, To; Sullivan, D. J.; Sumi, T.; Sweatman, W. L.; Tristram, P.J.; Tsurumi, N.; Wada, K.; Yock, P. C. M.; Albrow, M. D.; Bachelet, E.; Brillant, S.; Caldwell, J.A.R.; Cassan, A.; Cole, A. A.; Corrales, E.; Coutures, C.; Dieters, S.; Dominis Prester, D.; Fouqué, P.; Greenhill, J.; Horne, K.; Koo, J. R.; Kubas, D.; Marquette, J. B.; Martin, R.; Menzies, J.W.; Sahu, K. C.; Wambsganss, J.; Williams, A.; Zub, M.; Choi, J. Y.; Depoy, D. L.; Dong, Subo; Gaudi, B. S.; Gould, A.; Han, C.; Henderson, C. B.; Lee, C. U.; Pogge, R. W.; Shin, I. G.; Yee, J. C.; Szymański, M. K.; Skowron, J.; Poleski, R.; Kozłowski, S.; Wyrzykowski, L.; Kubiak, M.; Pietrukowicz, P.; Pietrzyński, G.; Soszyński, I.; Ulaczyk, K.; Tsapras, Y.; Street, R. A.; Dominik, M.; Bramich, D.M.; Browne, P.; Hundertmark, M.; Kains, N.; Snodgrass, C.; Steele, I.A.; Dekany, I.; Gonzalez, O. A.; Heyrovský, D.; Kandori, R.; Kerins, E.; Lucas, P.W.; Minniti, D.; Nagayama, T.; Rejkuba, M.; Robin, A.C.; Saito, And R. (2014-04-20)
      We present the first microlensing candidate for a free-floating exoplanet-exomoon system, MOA-2011-BLG-262, with a primary lens mass of M host ∼ 4 Jupiter masses hosting a sub-Earth mass moon. The argument for an exomoon ...

    • Parallaxes of Five L Dwarfs with a Robotic Telescope 

      Wang, Y.; Jones, H.R.A.; Smart, R.L.; Marocco, F.; Pinfield, D.J.; Shao, Z.; Steele, I.A.; Zhang, Z.; Andrei, A.H.; Burgasser, A. J.; Cruz, K. L.; Yu, J.; Clarke, J. R. A.; Leigh, C.J.; Sozzetti, A.; Murray, D. N.; Burningham, B. (2014-01-01)
      We report the parallax and proper motion of five L dwarfs obtained with observations from the robotic Liverpool Telescope. Our derived proper motions are consistent with published values and have considerably smaller errors. ...

    • The Prospects for Finding Brown Dwarfs in Eclipsing Binary Systems and Measuring Brown Dwarf Properties 

      Pinfield, D.J.; Jones, H.R.A.; Steele, I.A. (2005)

    • Rise and fall of the X-ray flash 080330: an off-axis jet? 

      Guidorzi, C.; Clemens, C.; Kobayashi, S.; Granot, J.; Melandri, A.; D'Avanzo, P.; Kuin, N.P.M.; Klotz, A.; Fynbo, J.; Covino, S.; Greiner, J.; Malesani, D.; Mao, J.; Mundell, C.G.; Steele, I.A.; Jakobsson, P.; Margutti, R.; Bersier, D.; Campana, S.; Chincarini, G.; D'Elia, V.; Fugazza, D.; Genet, F.; Gomboc, A.; Kruhler, T.; Yoldas, A.K.; Moretti, A.; Mottram, C.J.; O'Brien, P.T.; Smith, R.J.; Szokoly, G.; Tagliaferri, G.; Tanvir, N.; Gehrels, N. (2009)
      Context. X-ray flashes (XRFs) are a class of gamma-ray bursts (GRBs) with a peak energy of the time-integrated spectrum, , typically below 30 keV, whereas classical GRBs have of a few hundreds of keV. Apart from and the ...

    • Ultracool Dwarf Stars: Surveys, Properties, and Spectral Classification 

      Steele, I.A.; Jones, H.R.A. (2001-03)