Search Publications
Velocity vectors of a quiescent prominence observed by Hinode/SOT and the MSDP (Meudon)
Schmieder, B.; Chandra, R.; Berlicki, A. +1 more
Context. The dynamics of prominence fine structures present a challenge to our understanding of the formation of cool plasma prominence embedded in the hot corona.
Aims: Observations performed by the high resolution Hinode/SOT telescope allow us to compute velocities perpendicular to the line-of-sight or transverse velocities. Combining simul…
Hydrides in young stellar objects: Radiation tracers in a protostar-disk-outflow system
de Graauw, Th.; Liseau, R.; Braine, J. +66 more
Context. Hydrides of the most abundant heavier elements are fundamental molecules in cosmic chemistry. Some of them trace gas irradiated by UV or X-rays.
Aims: We explore the abundances of major hydrides in W3 IRS5, a prototypical region of high-mass star formation.
Methods: W3 IRS5 was observed by HIFI on the Herschel Space Observatory …
Far-infrared properties of submillimeter and optically faint radio galaxies
Berta, S.; Magnelli, B.; Nordon, R. +34 more
We use deep observations obtained with the Photodetector Array Camera and Spectrometer (PACS) onboard the Herschel Space Observatory to study the far-infrared (FIR) properties of submillimeter and optically faint radio galaxies (SMGs and OFRGs). From literature we compiled a sample of 35 securely identified SMGs and nine OFRGs located in the GOODS…
Reconstructing the solar integrated radial velocity using MDI/SOHO
Meunier, N.; Lagrange, A. -M.; Desort, M.
Context. Searches for exoplanets with radial velocity techniques are increasingly sensitive to stellar activity. It is therefore crucial to characterize how this activity influences radial velocity measurements in their study of the detectability of planets in these conditions.
Aims: In a previous work we simulated the impact of spots and pla…
Comet 67P/Churyumov-Gerasimenko: the GIADA dust environment model of the Rosetta mission target
Fulle, M.; Agarwal, J.; Lopez Moreno, J. J. +13 more
Context. The ESA Rosetta spacecraft will reach the short-period comet 67P/Churyumov-Gerasimenko in 2014. Orbiting strategy, orbiter safety conditions, landing scenarios and expected results from dust collectors depend on models of the 67P dust environment. Many papers already tackled this matter, analysing a limited set of observations, and theref…
INTEGRAL/IBIS 7-year All-Sky Hard X-Ray Survey. II. Catalog of sources
Sunyaev, R.; Krivonos, R.; Tsygankov, S. +3 more
This paper is the second in a series devoted to the hard X-ray (17-60 keV) whole sky survey performed by the INTEGRAL observatory over seven years. Here we present a catalog of detected sources that includes 521 objects, 449 of which exceed a 5σ detection threshold on the time-averaged map of the sky, and 53 were detected in various subsamples of …
Interstellar CH absorption in the diffuse interstellar medium along the sight-lines to G10.6-0.4 (W31C), W49N, and W51
Perault, M.; Boulanger, F.; Falgarone, E. +55 more
We report the detection of the ground state N,J = 1,3/2 → 1,1/2 doublet of the methylidyne radical CH at ~532 GHz and ~536 GHz with the Herschel/HIFI instrument along the sight-line to the massive star-forming regions G10.6-0.4 (W31C), W49N, and W51. While the molecular cores associated with these massive star-forming regions show emission lines, …
SPIRE imaging of M 82: Cool dust in the wind and tidal streams
Elbaz, D.; Bock, J. J.; Clements, D. L. +57 more
M 82 is a unique representative of a whole class of galaxies, starbursts with superwinds, in the Very Nearby Galaxy Survey with Herschel. In addition, its interaction with the M 81 group has stripped a significant portion of its interstellar medium from its disk. SPIRE maps now afford better characterization of the far-infrared emission from cool …
Sensitive limits on the abundance of cold water vapor in the DM Tauri protoplanetary disk
de Graauw, Th.; Liseau, R.; Braine, J. +61 more
We performed a sensitive search for the ground-state emission lines of ortho- and para-water vapor in the DM Tau protoplanetary disk using the Herschel/HIFI instrument. No strong lines are detected down to 3σ levels in 0.5 km s-1 channels of 4.2 mK for the 110-101 line and 12.6 mK for the 111-000
FIR colours and SEDs of nearby galaxies observed with Herschel
Elbaz, D.; Ciesla, L.; Okumura, K. +78 more
We present infrared colours (in the 25-500 µm spectral range) and UV to radio continuum spectral energy distributions of a sample of 51 nearby galaxies observed with SPIRE on Herschel. The observed sample includes all morphological classes, from quiescent ellipticals to active starbursts. Active galaxies have warmer colour temperatures than …