Search Publications
Herschel-PACS observations of shocked gas associated with the jets of L1448 and L1157
Liseau, R.; Codella, C.; van Dishoeck, E. F. +7 more
Aims: In the framework of the Water In Star-forming regions with Herschel (WISH) key program, several H2O (Eu > 190 K), high-J CO, [Oi], and OH transitions are mapped with Herschel-PACS in two shock positions along two prototypical outflows around the low-luminosity sources L1448 and L1157. Previous Herschel-HIFI H
Planck intermediate results. XII: Diffuse Galactic components in the Gould Belt system
Miville-Deschênes, M. -A.; Boulanger, F.; Bernard, J. -P. +179 more
We perform an analysis of the diffuse low-frequency Galactic components in the southern part of the Gould Belt system (130° ≤ l ≤ 230° and -50° ≤ b ≤ -10°). Strong ultra-violet flux coming from the Gould Belt super-association is responsible for bright diffuse foregrounds that we observe from our position inside the system and that can help us imp…
Heavy ion effects on substorm loading and unloading in the Earth's magnetotail
Dandouras, Iannis; Klecker, Berndt; Kistler, Lynn M. +2 more
We have performed a statistical study investigating how substorm triggering and unloading is affected by the heavy ion content of the magnetotail plasma sheet. During the substorm growth phase, magnetic flux is accumulated in the tail lobes until the magnetotail reaches an unstable state. A near-Earth neutral line then forms, and this excess flux …
Composition of Titan's upper atmosphere from Cassini UVIS EUV stellar occultations
Zhang, X.; Shemansky, D. E.; Yung, Y. L. +1 more
Identifying seasonal and spatial variability in Titan's atmospheric structure is a key factor in improving theoretical models of atmospheric loss and understanding the physical processes that control the loss rate. In this work, the extreme ultraviolet (EUV) stellar occultation lightcurves from the Cassini Ultraviolet Imaging Spectrograph (UVIS) e…
Low-mass X-ray binary populations in galaxy outskirts: Globular clusters and supernova kicks
Bogdán, Á.; Gilfanov, M.; Zhang, Z.
For the first time, we have systematically explored the population of discrete X-ray sources in the outskirts of early-type galaxies. Based on a broad sample of 20 galaxies observed with Chandra we detected overdensity of X-ray sources in their outskirts. The overdensity appears as halos of resolved sources around the galaxies. These halos are bro…
Morphotectonic features on Titan and their possible origin
Coustenis, Athena; Solomonidou, Anezina; Bampasidis, Georgios +5 more
Spectro-imaging and radar measurements by the Cassini-Huygens mission suggest that some of the Saturnian satellites may be geologically active and could support tectonic processes. In particular Titan, Saturn's largest moon, possesses a complex and dynamic geology as witnessed by its varied surface morphology resulting from aeolian, fluvial, and p…
Mining the Herschel-Astrophysical Terahertz Large Area Survey: submillimetre-selected blazars in equatorial fields
Ivison, R. J.; Sutherland, W.; Bonavera, L. +29 more
The Herschel-Astrophysical Terahertz Large Area Survey (H-ATLAS) provides an unprecedented opportunity to search for blazars at sub-mm wavelengths. We cross-matched the Faint Images of the Radio Sky at Twenty-cm (FIRST) radio source catalogue with the 11 655 sources brighter than 35 mJy at 500 µm in the ∼135 deg2 of the sky covere…
Dust-obscured Galaxies in the Local Universe
Hwang, Ho Seong; Geller, Margaret J.
We use Wide-field Infrared Survey Explorer (WISE), AKARI, and Galaxy Evolution Explorer (GALEX) data to select local analogs of high-redshift (z ~ 2) dust obscured galaxies (DOGs). We identify 47 local DOGs with S 12 µm/S 0.22 µm >= 892 and S 12 µm > 20 mJy at 0.05 < z < 0.08 in the Sl…
Hipparcos Photocentric Orbits of 72 Single-lined Spectroscopic Binaries
Ren, Shulin; Fu, Yanning
By fitting the Hipparcos Intermediate Astrometric Data (HIAD), photocentric orbits can be obtained for the single-lined spectroscopic binaries (SB1s). In previous work, a simplifying approximation used in the fitting process was that the photocenter coincides with the primary, but simple arguments based on a mass-luminosity relation show that this…
Two different types of plasmoids in the plasma sheet: Cluster multisatellite analysis application
Zhang, T. L.; Dandouras, I.; Zhang, H. +10 more
fine magnetic field structure of two successive plasmoids previously reported is investigated by magnetic rotation analysis using four Cluster satellite data. Between these two plasmoids, opposite trends of curvature radius (Rc) variations of the magnetic field lines from the boundary to the inner part are found. The different variation…