Search Publications
Missions
Journals
Publication Years
A bright z = 5.2 lensed submillimeter galaxy in the field of Abell 773. HLSJ091828.6+514223
Smail, I.; Kneib, J. -P.; Smith, G. P. +20 more
During our Herschel Lensing Survey (HLS) of massive galaxy clusters, we have discovered an exceptionally bright source behind the z = 0.22 cluster Abell 773, which appears to be a strongly lensed submillimeter galaxy (SMG) at z = 5.2429. This source is unusual compared to most other lensed sources discovered by Herschel so far, because of its high…
Homogeneous studies of transiting extrasolar planets - V. New results for 38 planets
Southworth, John
I measure the physical properties of 38 transiting extrasolar planetary systems, bringing the total number studied within the Homogeneous Studies project to 82. Transit light curves are modelled using the jktebop code, with careful attention paid to limb darkening, orbital eccentricity and contaminating light. The physical properties of each syste…
A photochemical model for the Venus atmosphere at 47-112 km
Krasnopolsky, Vladimir A.
The model is intended to respond to the recent findings in the Venus atmosphere from the Venus Express and ground-based submillimeter and infrared observations. It extends down to 47 km for comparison with the kinetic model for the lower atmosphere (Krasnopolsky, V.A. [2007]. Icarus 191, 25-37) and to use its results as the boundary conditions. Th…
1H 0707-495 in 2011: an X-ray source within a gravitational radius of the event horizon
Schartel, N.; Santos-Lleó, M.; Fabian, A. C. +8 more
The narrow-line Seyfert 1 Galaxy 1H 0707-495 went into a low state from 2010 December to 2011 February, discovered by a monitoring campaign using the X-Ray Telescope on the Swift satellite. We triggered a 100 ks XMM-Newton observation of the source in 2011 January, revealing the source to have dropped by a factor of 10 in the soft band, below 1 ke…
Magnetic Reconnection in the Near Venusian Magnetotail
Coates, A. J.; Fedorov, A.; Barabash, S. +14 more
Observations with the Venus Express magnetometer and low-energy particle detector revealed magnetic field and plasma behavior in the near-Venus wake that is symptomatic of magnetic reconnection, a process that occurs in Earth’s magnetotail but is not expected in the magnetotail of a nonmagnetized planet such as Venus. On 15 May 2006, the plasma fl…
A Swift Look at SN 2011fe: The Earliest Ultraviolet Observations of a Type Ia Supernova
Gronwall, Caryl; Milne, Peter; Kuin, Paul +8 more
We present the earliest ultraviolet (UV) observations of the bright Type Ia supernova SN 2011fe/PTF11kly in the nearby galaxy M101 at a distance of only 6.4 Mpc. It was discovered shortly after explosion by the Palomar Transient Factory and first observed by Swift/UVOT about a day after explosion. The early UV light is well defined, with ~20 data …
Sigmoidal Active Region on the Sun: Comparison of a Magnetohydrodynamical Simulation and a Nonlinear Force-free Field Model
Aulanier, G.; Pariat, E.; Savcheva, A. +2 more
In this paper we show that when accurate nonlinear force-free field (NLFFF) models are analyzed together with high-resolution magnetohydrodynamic (MHD) simulations, we can determine the physical causes for the coronal mass ejection (CME) eruption on 2007 February 12. We compare the geometrical and topological properties of the three-dimensional ma…
Modeling Dust and Starlight in Galaxies Observed by Spitzer and Herschel: NGC 628 and NGC 6946
Helou, G.; Roussel, H.; Murphy, E. J. +26 more
We characterize the dust in NGC 628 and NGC 6946, two nearby spiral galaxies in the KINGFISH sample. With data from 3.6 µm to 500 µm, dust models are strongly constrained. Using the Draine & Li dust model (amorphous silicate and carbonaceous grains), for each pixel in each galaxy we estimate (1) dust mass surface density, (2) dust …
Star Formation in the Early Universe: Beyond the Tip of the Iceberg
Greiner, J.; Kouveliotou, C.; Fruchter, A. S. +18 more
We present late-time Hubble Space Telescope (HST) imaging of the fields of six Swift gamma-ray bursts (GRBs) lying at 5.0 <~ z <~ 9.5. Our data include very deep observations of the field of the most distant spectroscopically confirmed burst, GRB 090423, at z = 8.2. Using the precise positions afforded by their afterglows, we can place strin…
The M31 Velocity Vector. I. Hubble Space Telescope Proper-motion Measurements
Anderson, Jay; van der Marel, Roeland P.; Sohn, Sangmo Tony
We present the first proper-motion (PM) measurements for the galaxy M31. We obtained new V-band imaging data with the Hubble Space Telescope ACS/WFC and the WFC3/UVIS instruments of three fields: a spheroid field near the minor axis, an outer disk field along the major axis, and a field on the Giant Southern Stream. The data provide five to seven …