Search Publications
The dynamics of Jupiter and Saturn in the gaseous protoplanetary disk
Morbidelli, Alessandro; Crida, Aurélien
We study the possibility that the mutual interactions between Jupiter and Saturn prevented Type II migration from driving these planets much closer to the Sun. Our work extends previous results by Masset and Snellgrove [Masset, F., Snellgrove, M., 2001. Mon. Not. R. Astron. Soc. 320, L55-L59], by exploring a wider set of initial conditions and dis…
A Comparative Study between Eruptive X-Class Flares Associated with Coronal Mass Ejections and Confined X-Class Flares
Wang, Yuming; Zhang, Jie
We examine the two kinds of major energetic phenomena that occur in the solar atmosphere: eruptive and confined events. The former describes flares with associated coronal mass ejections (CMEs), while the latter denotes flares without associated CMEs. We find that about 90% of X-class flares are eruptive, but the remaining 10% are confined. To pro…
Early geochemical environment of Mars as determined from thermodynamics of phyllosilicates
Bibring, Jean-Pierre; Poulet, Francois; Chevrier, Vincent
Images of geomorphological features that seem to have been produced by the action of liquid water have been considered evidence for wet surface conditions on early Mars. Moreover, the recent identification of large deposits of phyllosilicates, associated with the ancient Noachian terrains suggests long-timescale weathering of the primary basaltic …
Calibration of the galaxy cluster M{500}-Y{X} relation with XMM-Newton
Arnaud, M.; Pointecouteau, E.; Pratt, G. W.
The quantity Y_X, the product of the X-ray temperature TX and gas mass M_g, has recently been proposed as a robust low-scatter mass indicator for galaxy clusters. Using precise measurements from XMM-Newton data of a sample of 10 relaxed nearby clusters, spanning a YX range of 1013-1015 M_⊙ keV, we invest…
The Hubble Flow around the Centaurus A/M83 Galaxy Complex
Dolphin, Andrew; Shaya, Edward J.; Tully, R. Brent +8 more
We present Hubble Space Telescope ACS images and color-magnitude diagrams for 24 nearby galaxies in and near the constellation of Centaurus with radial velocities VLG<550 km s-1. Distances are determined based on the luminosities of stars at the tip of the red giant branch that range from 3.0 to 6.5 Mpc. The galaxies are c…
INTEGRAL/IBIS all-sky survey in hard X-rays
Sunyaev, R.; Krivonos, R.; Revnivtsev, M. +3 more
We present results of an all-sky hard X-ray survey based on almost four years of observations with the IBIS telescope onboard the INTEGRAL observatory. The dead time-corrected exposure of the survey is ~33 Ms. Approximately 12% and 80% of the sky has been covered to limiting fluxes lower than 1 and 5 mCrab, respectively. Our catalog of detected so…
A Study of Polar Jet Parameters Based on Hinode XRT Observations
Golub, Leon; Shimojo, Masumi; Narukage, Noriyuki +9 more
Hinode/SOHO campaign 7197 is the most extensive study of polar jet formation and evolution from within both the north and south polar coronal holes so far. For the first time, this study showed that the appearance of X-ray jets in the solar coronal holes occurs at very high frequency - about 60 jets d-1 on average. Using observations co…
Evidence for a Population of High-Redshift Submillimeter Galaxies from Interferometric Imaging
Kohno, Kotaro; Wilner, David J.; Schinnerer, Eva +22 more
We have used the Submillimeter Array to image a flux-limited sample of seven submillimeter galaxies, selected by the AzTEC camera on the JCMT at 1.1 mm, in the COSMOS field at 890 µm with ~2" resolution. All of the sources-two radio-bright and five radio-dim-are detected as single point sources at high significance (>6 σ), with positions …
Vertical abundance profiles of hydrocarbons in Titan's atmosphere at 15° S and 80° N retrieved from Cassini/CIRS spectra
Bézard, Bruno; Vinatier, Sandrine; Nixon, Conor A. +8 more
Limb spectra recorded by the Composite InfraRed Spectrometer (CIRS) on Cassini provide information on abundance vertical profiles of C 2H 2, C 2H 4, C 2H 6, CH 3C 2H, C 3H 8, C 4H 2, C 6H 6 and H…
Probing clumpy stellar winds with a neutron star
Walter, R.; Zurita Heras, J.
Context: INTEGRAL, the European Space Agency's γ-ray observatory, tripled the number of super-giant high-mass X-ray binaries (sgHMXB) known in the Galaxy by revealing absorbed and fast transient (SFXT) systems.
Aims: In these sources, quantitative constraints on the wind clumping of the massive stars could be obtained from the study of the har…