8.6k citations · 16.1k across the 123 of their papers we have counts for
22 papers · 1 filter
RISE: a fast-readout imager for exoplanet transit timing
I. A. Steele, S. D. Bates, N. Gibson +5
By the precise timing of the low amplitude (0.005 - 0.02 magnitude) transits of exoplanets around their parent star it should be possible to infer the presence of other planetary b…
RoboNet-II: Follow-up observations of microlensing events with a robotic network of telescopes
Y. Tsapras, R. Street, K. Horne +20
RoboNet-II uses a global network of robotic telescopes to perform follow-up observations of microlensing events in the Galactic Bulge. The current network consists of three 2m tele…
Inferring statistics of planet populations by means of automated microlensing searches
M. Dominik, U. G. Jorgensen, K. Horne +17
(abridged) The study of other worlds is key to understanding our own, and not only provides clues to the origin of our civilization, but also looks into its future. Rather than in…
Multiwavelength analysis of the intriguing GRB 061126: the reverse shock scenario and magnetization
A. Gomboc, S. Kobayashi, C. Guidorzi +30
We present a detailed study of the prompt and afterglow emission from Swift GRB 061126 using BAT, XRT, UVOT data and multi-color optical imaging from ten ground-based telescopes. G…
ARTEMiS (Automated Robotic Terrestrial Exoplanet Microlensing Search) - A possible expert-system based cooperative effort to hunt for planets of Earth mass and below
M. Dominik, K. Horne, A. Allan +12
(abridged) The technique of gravitational microlensing is currently unique in its ability to provide a sample of terrestrial exoplanets around both Galactic disk and bulge stars, a…
Limits on additional planetary companions to OGLE-2005-BLG-390L
D. Kubas, A. Cassan, M. Dominik +1
We investigate constraints on additional planets orbiting the distant M-dwarf star OGLE-2005-BLG-390L, around which photometric microlensing data has revealed the existence of the…
Early Optical Polarization of a Gamma Ray Burst Afterglow
Carole G. Mundell, Iain A. Steele, Robert J. Smith +10
We report the optical polarization of a gamma ray burst (GRB) afterglow, obtained 203 seconds after the initial burst of gamma rays from GRB 060418, using a ring polarimeter on the…
The prompt to late-time multiwavelength analysis of GRB 060210
P. A. Curran, A. J. van der Horst, A. P. Beardmore +19
We present our analysis of the multiwavelength photometric & spectroscopic observations of GRB 060210 and discuss the results in the overall context of current GRB models. All avai…
The circumburst environment of a FRED GRB: study of the prompt emission and X-ray/optical afterglow of GRB 051111
C. Guidorzi, A. Gomboc, S. Kobayashi +14
We report a multi-wavelength analysis of the prompt emission and early afterglow of GRB051111 and discuss its properties in the context of current fireball models. The detection of…
The Remarkable Afterglow of GRB 061007: Implications for Optical Flashes and GRB Fireballs
C. G. Mundell, A. Melandri, C. Guidorzi +18
We present a multiwavelength analysis of Swift GRB 061007. The 2-m robotic Faulkes Telescope South (FTS) began observing 137 s after the onset of the gamma-ray emission, when the o…
Microlens OGLE-2005-BLG-169 Implies Cool Neptune-Like Planets are Common
A. Gould, A. Udalski, D. An +33
We detect a Neptune mass-ratio (q~8e-5) planetary companion to the lens star in the extremely high-magnification (A~800) microlensing event OGLE-2005-BLG-169. If the parent is a ma…
High Quality Early Time Light Curves of GRB 060206: Implications for Gamma Ray Burst Environments and Energetics
A. Monfardini, S. Kobayashi, C. Guidorzi +8
The 2-m robotic Liverpool Telescope (LT) reacted promptly to the high-redshift (z=4.048) gamma-ray burst GRB 060206. The afterglow was identified automatically and multicolor r'i'z…
The Automatic Real-Time GRB Pipeline of the 2-m Liverpool Telescope
C. Guidorzi, A. Monfardini, A. Gomboc +9
The 2-m Liverpool Telescope (LT), owned by Liverpool John Moores University, is located in La Palma (Canary Islands) and operates in fully robotic mode. In 2005, the LT began condu…
The Early (<1 hr) Multi-Color Afterglow of GRB 050502a: Possible Evidence for a Uniform Medium with Density Clumps
C. Guidorzi, A. Monfardini, A. Gomboc +11
The 2-m robotic Liverpool Telescope reacted promptly to the gamma-ray burst GRB 050502a discovered by INTEGRAL and started observing 3 min after the onset of the GRB. The automatic…
On the class of Oe stars
Ignacio Negueruela, Iain A. Steele, Guillem Bernabeu
We present high-quality spectra of the majority of stars that have been classified as Oe and find that their published spectral types are generally too early, most likely due to in…
The Liverpool Telescope Spectrograph: FRODOSpec
L. Morales-Rueda, D. Carter, I. A. Steele +2
We describe in some detail one of the instruments that will be available in 2004 to the research community. FRODOSpec is an integral field unit spectrograph that will be available…
Brown dwarfs and low-mass stars in the Pleiades and Praesepe:- Membership and binarity
D. J. Pinfield, P. D. Dobbie, R. F. Jameson +3
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 find…
A representative sample of Be stars III: H band spectroscopy
I. A. Steele, J. S. Clark
We present H band (1.53 - 1.69 micron) spectra of 57 isolated Be stars of spectral types O9-B9 and luminosity classes III,IV & V. The HI Brackett (n-4) series is seen in emission f…
IZ Photometry of L dwarfs and the implications for brown dwarf surevys
I. A. Steele, L. Howells
The I-Z colour has been recently shown to be a good temperature indicator for M dwarfs. We present the first IZ photometry of a small sample of L dwarfs ranging in spectral type fr…
A constraint on the angular momentum evolution of Be stars
I. A. Steele
The Be star sample of Steele et al. (1998) has a distribution of v sin i's that is luminosity dependant, with giants having lower projected rotational velocities than dwarfs. We sh…
The distances to the X-ray binaries LSI +61 303 and A0535+262
I. A. Steele, I Negueruela, M. J. Coe +1
Chevalier & Ilovaisky (1998) use Hipparcos data to show that the X-ray binary systems LSI+61 303 and A0535+262 are a factor of ten closer (i.e. d = few hundred pc) than previously…
Multiwavelength observations of the Be/X-ray binary 4U1145-619
James B. Stevens, Pablo Reig, Malcolm J. Coe +3
We report optical and infrared observations of the massive X-ray binary system 4U1145-619 (V801 Cen) which show that the circumstellar disc of the Be star component is in decline.…