Search Publications
An interferometric study of the post-AGB binary 89 Herculis. I. Spatially resolving the continuum circumstellar environment at optical and near-IR wavelengths with the VLTI, NPOI, IOTA, PTI, and the CHARA Array
Chesneau, O.; Banerjee, D. P. K.; Verhoelst, T. +9 more
Context. Binary post-asymptotic giant branch (post-AGB) stars are interesting laboratories to study both the evolution of binaries as well as the structure of circumstellar disks.
Aims: A multiwavelength high angular resolution study of the prototypical object 89 Herculis is performed with the aim of identifying and locating the different emi…
Statistical study of foreshock cavitons
Sauvaud, J. -A.; Russell, C. T.; Dandouras, I. +5 more
In this work we perform a statistical analysis of 92 foreshock cavitons observed with the Cluster spacecraft 1 during the period 2001-2006. We analyze time intervals during which the spacecraft was located in the Earth's foreshock with durations longer than 10 min. Together these amount to ~ 50 days. The cavitons are transient structures in the Ea…
Proper motions of young stars in Chamaeleon. I. A Virtual Observatory study of spectroscopically confirmed members
Bayo, A.; Solano, E.; Barrado, D. +3 more
Context. The study of the motion of the members of a given open cluster or stellar association provides key information about their formation and early evolution. The Chamaeleon cloud complex constitutes one of the closest and best studied low-mass star-forming regions in the Galaxy.
Aims: We want to provide further evidence of the origin of …
AKARI/IRC 18 µm survey of warm debris disks
Marshall, J. P.; White, G. J.; Nakagawa, T. +11 more
Context. Little is known about the properties of the warm (Tdust ≳ 150 K) debris disk material located close to the central star, which has a more direct link to the formation of terrestrial planets than does the low-temperature debris dust that has been detected to date.
Aims: To discover new warm debris disk candidates that show …
The star formation history of the Large Magellanic Cloud star clusters NGC 1846 and NGC 1783
Girardi, Léo; Marigo, Paola; Goudfrooij, Paul +4 more
NGC 1846 and NGC 1783 are two massive star clusters in the Large Magellanic Cloud, hosting both an extended main-sequence turn-off and a dual clump of red giants. They present similar masses but differ mainly in angular size. Starting from their high-quality ACS data in the F435W, F555W and F814W filters, and updated sets of stellar evolutionary t…
The XMM-Large Scale Structure catalogue - II. X-ray sources and associated multiwavelength data
Chiappetti, L.; Pierre, M.; Surdej, J. +8 more
We present the final release of the multiwavelength XMM-Large Scale Structure (LSS) data set, covering the full survey area of 11.1 deg2, with X-ray data processed with the latest XMM-LSS pipeline version. The present publication supersedes the catalogue from the first paper in this series, pertaining to the initial 5 deg2. W…
Anomalously Steep Reddening Law in Quasars: An Exceptional Example Observed in IRAS 14026+4341
Wang, Jianguo; Bai, Jinming; Shu, Xinwen +7 more
A fraction of the heavily reddened quasars require a reddening curve that is even steeper than that of the Small Magellanic Cloud. In this paper, we thoroughly characterize the anomalously steep reddening law in quasars via an exceptional example observed in IRAS 14026+4341. By comparing the observed spectrum to the quasar composite spectrum, we d…
Evidence for Recombining Plasma in the Supernova Remnant G346.6-0.2
Koyama, Katsuji; Nobukawa, Masayoshi; Yamauchi, Shigeo +1 more
We present Suzaku results of the supernova remnant (SNR) G346.6-0.2. The X-ray emission has a center-filled morphology with a size of 67' × 8' within the radio shell. Neither an ionization equilibrium nor non-equilibrium (ionizing) plasma can reproduce the spectra remaining shoulder-like residuals in the 2-4 keV band. These structures are possibly…
Saturn’s thermal emission at 2.2-cm wavelength as imaged by the Cassini RADAR radiometer
Baines, K. H.; Edgington, S. G.; Janssen, M. A. +7 more
We present well-calibrated, high-resolution maps of Saturn’s thermal emission at 2.2-cm wavelength obtained by the Cassini RADAR radiometer through the Prime and Equinox Cassini missions, a period covering approximately 6 years. The absolute brightness temperature calibration of 2% achieved is more than twice better than for all previous microwave…
X-ray properties of BzK-selected galaxies in the deepest X-ray fields
Nandra, K.; Laird, E. S.; Rangel, C. +1 more
We investigate the X-ray properties of BzK-selected galaxies at z ∼ 2 using deep X-ray data in the Chandra Deep Field-South (CDFS) and Chandra Deep Field-North (CDFN). A subset of these BzK galaxies have been proposed as Compton-thick active galactic nucleus (AGN) candidates based on a high ratio of infrared (IR) to ultraviolet (UV) star formation…