Search Publications
Erratum: "The Herschel and IRAM CHESS Spectral Surveys of the Protostellar Shock L1157-B1: Fossil Deuteration" (2012, ApJ, 757, L9)
Codella, C.; Ceccarelli, C.; Caselli, P. +9 more
Self-Charge-Filling (SCF) Effect of Suzaku XIS
Kitamoto, Shunji; Murakami, Hiroshi; Yoshida, Yuki +1 more
We demonstrate the importance of the self-charge-filling (SCF) effect for the analysis of bright and line-rich sources with the Suzaku X-ray imaging spectrometer (XIS) if spaced-row charge injection (SCI) is not applied. The SCF-effect changes the central energy of lines depending on the extracted region or the event densities of the images. We pr…
Orbital and stochastic far-ultraviolet variability in the nova-like system V3885 Sgr
Prinja, R. K.; Long, K. S.; Witherick, D. K. +2 more
Highly time-resolved time-tagged FUSE satellite spectroscopic data are analysed to establish the far-ultraviolet (FUV) absorption line characteristics of the nova-like cataclysmic variable binary, V3885 Sgr. We determine the temporal behaviour of low (Lyβ, C III, N III) and high (S IV, P V, O VI) ion species, and highlight corresponding orbital ph…
A background galaxy in the field of the β Pictoris debris disk
Ivison, R. J.; Fridlund, M.; Olofsson, G. +9 more
Herschel images in six photometric bands show the thermal emission of the debris disk surrounding
On the Nature of Hard X-Ray Extragalactic Sources Observed with XMM-Newton
Schartel, N.; Santos-Lleó, M.; Jiménez-Bailón, E. +3 more
Over the last decade, X-ray surveys have provided outstanding new results due to the lack of the common selection effects present at other wavelengths. Here, we have selected a sample of unidentified sources from the XMM-Newton Slew Survey Catalog, likely to be extragalactic. Five of them were observed with the XMM-Newton observatory. In this work…
Global Optimization Methods for Gravitational Lens Systems with Regularized Sources
Rogers, Adam; Fiege, Jason D.
Several approaches exist to model gravitational lens systems. In this study, we apply global optimization methods to find the optimal set of lens parameters using a genetic algorithm. We treat the full optimization procedure as a two-step process: an analytical description of the source plane intensity distribution is used to find an initial appro…
The Lower Main Sequence of Stars in the Solar Neighborhood: Model Predictions versus Observation
Sperauskas, J.; Bartašiūtė, S.; Deveikis, V. +1 more
We have used the Simbad database and VizieR catalogue access tools to construct the observational color--absolute magnitude diagrams of nearby K--M dwarfs with precise Hipparcos parallaxes (σ π /π ≤ 0.05). Particular attention has been paid to removing unresolved double/multiple stars and variables. In addition to archival data, we have…
Correlated observations of intensified whistler waves and electron acceleration around the geostationary orbit
Zong, Qiugang; Su, Zhenpeng; Xiao, Fuliang +3 more
We report correlated observations of enhanced whistler waves and energetic electron acceleration collected by multiple satellites specifically near the geostationary orbit during the 7-10 November 2004 superstorms, together with multi-site observations of ULF wave power measured on the ground. Energetic (>0.6 MeV) electron fluxes are found to i…
AKARI Near-Infrared Spectroscopic Survey for Cometary Volatiles
Usui, F.; Ootsubo, T.; AKARI SOSOS Team +2 more
Binary Orbit Determination by Using a Variety of Observational Data
Ren, S. L.
The binary orbit determination is a basic research area in astronomy, its main products are the kinematical parameters of binary, which contain the kinematical parameters of the mass center and the orbital parameters. These parameters are the necessary constituents of the astronomical reference frame with high precision and high density, and at th…