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The Star Formation in Radio Survey: GBT 33 GHz Observations of Nearby Galaxy Nuclei and Extranuclear Star-forming Regions
Helou, G.; Murphy, E. J.; Armus, L. +7 more
We present 33 GHz photometry of 103 galaxy nuclei and extranuclear star-forming complexes taken with the Green Bank Telescope as part of the Star Formation in Radio Survey. Among the sources without evidence for an active galactic nucleus, and also having lower frequency radio data, we find a median thermal fraction at 33 GHz of ≈76% with a disper…
The Evolution of Lyα-emitting Galaxies between z = 2.1 and z = 3.1
Gronwall, Caryl; Gawiser, Eric; Ciardullo, Robin +11 more
We describe the results of a new, wide-field survey for z = 3.1 Lyα emitters (LAEs) in the Extended Chandra Deep Field South (ECDF-S). By using a nearly top-hat 5010 Å filter and complementary broadband photometry from the MUSYC survey, we identify a complete sample of 141 objects with monochromatic fluxes brighter than 2.4 × 10-17 erg …
An icy Kuiper belt around the young solar-type star HD 181327
Pinte, C.; Ménard, F.; Duchêne, G. +18 more
Context. HD 181327 is a young main sequence F5/F6 V star belonging to the
Aims: We aim to study the dust properties in the belt in d…
Supermagnetosonic subsolar magnetosheath jets and their effects: from the solar wind to the ionospheric convection
Dandouras, I.; Vaivads, A.; Lucek, E. A. +7 more
It has recently been proposed that ripples inherent to the bow shock during radial interplanetary magnetic field (IMF) may produce local high speed flows in the magnetosheath. These jets can have a dynamic pressure much larger than the dynamic pressure of the solar wind. On 17 March 2007, several jets of this type were observed by the Cluster spac…
Morphology of the cloud tops as observed by the Venus Express Monitoring Camera
Crisp, David; Almeida, Miguel; Esposito, Larry W. +14 more
Since the discovery of ultraviolet markings on Venus, their observations have been a powerful tool to study the morphology, motions and dynamical state at the cloud top level. Here we present the results of investigation of the cloud top morphology performed by the Venus Monitoring Camera (VMC) during more than 3 years of the Venus Express mission…
INTEGRAL/IBIS nine-year Galactic hard X-ray survey
Sunyaev, R.; Krivonos, R.; Tsygankov, S. +3 more
Context. The INTEGRAL observatory operating in a hard X-ray/gamma domain has gathered a large observational data set over nine years starting in 2003. Most of the observing time was dedicated to the Galactic source population study, making possible the deepest Galactic survey in hard X-rays ever compiled.
Aims: We aim to perform a Galactic su…
Herschel imaging of 61 Vir: implications for the prevalence of debris in low-mass planetary systems
Ivison, R. J.; Bryden, G.; Kavelaars, J. J. +15 more
This paper describes Herschel observations of the nearby (8.5 pc) G5V multi-exoplanet host star 61 Vir at 70, 100, 160, 250, 350 and 500 ?m carried out as part of the DEBRIS survey. These observations reveal emission that is significantly extended out to a distance of >15 arcsec with a morphology that can be fitted by a nearly edge-on (77° incl…
Coronal Magnetic Field Measurement from EUV Images Made by the Solar Dynamics Observatory
Gopalswamy, Nat; Akiyama, Sachiko; Yashiro, Seiji +2 more
By measuring the geometrical properties of the coronal mass ejection (CME) flux rope and the leading shock observed on 2010 June 13 by the Solar Dynamics Observatory (SDO) mission's Atmospheric Imaging Assembly we determine the Alfvén speed and the magnetic field strength in the inner corona at a heliocentric distance of ~1.4 Rs. The basic measure…
Major-merger Galaxy Pairs in the COSMOS Field—Mass-dependent Merger Rate Evolution since z = 1
Capak, P.; Scoville, N.; Gao, Y. +3 more
We present results of a statistical study of the cosmic evolution of the mass-dependent major-merger rate since z = 1. A stellar mass limited sample of close major-merger pairs (the CPAIR sample) was selected from the archive of the COSMOS survey. Pair fractions at different redshifts derived using the CPAIR sample and a local K-band-selected pair…
The first INTEGRAL-OMC catalogue of optically variable sources
Mas-Hesse, J. M.; Domingo, A.; Alfonso-Garzón, J. +1 more
Context. The Optical Monitoring Camera (OMC) onboard INTEGRAL provides photometry in the Johnson V-band. With an aperture of 50 mm and a field of view of 5° × 5°, OMC is able to detect optical sources brighter than V ~ 18, from a previously selected list of potential targets of interest. After more than nine years of observations, the OMC database…