Search Publications
Hubble Space Telescope Discovery of an Optical Counterpart to the Supersoft X-Ray Source in the Globular Cluster M3
Heinke, Craig O.; Kahabka, Peter; Edmonds, Peter D.
We report the detection with the Hubble Space Telescope of an optical counterpart to the transient supersoft X-ray source 1E 1339.8+2837 in the globular cluster M3. The counterpart is found near the faint end of the subgiant branch in the V versus V-I color-magnitude diagram but is extremely bright in the U band. Variability is detected over a ran…
ISOCAM observations of the L1551 star formation region
Prusti, T.; Perault, M.; Olofsson, G. +17 more
The results of a deep mid-IR ISOCAM survey of the
Synthetic Spectral Analysis of the Hot Component in the S-Type Symbiotic Variable EG Andromedae
Sion, Edward M.; Mikołajewska, Joanna; Kolb, Kelly +1 more
We have applied grids of non-LTE (NLTE) high-gravity model atmospheres and optically thick accretion disk models for the first time to archival IUE and FUSE spectra of the S-type symbiotic variable EG Andromedae taken at superior spectroscopic conjunction, when Rayleigh scattering should be minimal and the hot component is viewed in front of the r…
Magnetic activity in HD 111456, a young F5-6 main-sequence star
Freire Ferrero, R.; Frasca, A.; Catalano, S. +1 more
We present spectroscopic and photometric observations of the young F5-6 V field star
Response of the Corona to Magnetic Activity in Underlying Plage Regions
Shine, R.; Ryutova, M.
We study the response of the solar corona to magnetic activity in the underlying plage regions using high-resolution Michelson Doppler Imager magnetograms co-aligned with multiwavelength images taken by TRACE at chromospheric and coronal temperatures. We show that the EUV emission above plage regions that are dominated by single-polarity magnetic …
New Runaway O-stars Based on Data from HIPPARCOS
Mdzinarishvili, T. G.
12 new runaway O-stars are identified using an analysis of their proper motions based on data from HIPPARCOS. The peculiar tangential and total transverse velocities of these stars are determined. A list of the observed runaway stars is given.
Generation of 3-D Synthetic Data for the Modeling of the CONSERT Experiment (The Radiotomography of Comet 67P/Churyumov Gerasimenko)
Kofman, W.; Barriot, J. -P.; Barbin, Y. +1 more
The Large Binocular Camera Image Simulator
Fontana, A.; Grazian, A.; Giallongo, E. +3 more
The Large Binocular Camera Image Simulator (LBCImSim) is a package for generating artificial images in the typical FITS format. It operates on real or artificial images, simulating the expected performances of real instruments by including several observing conditions (filters, air mass, flat field, and exposure time) and creating images with the …
Celestial position of the companion of PSR J1740-5340
Bassa, C. G.; Stappers, B. W.
We present optical astrometry of archival ground and space based imaging of the companion to PSR J1740-5340. The optical position of the companion is significantly offset from the timing position of the pulsar. We briefly investigate the effects of this inconsistency on other timing parameters and compare our position with an improved position of …
The Pul-3 catalogue of 58483 stars in the Tycho-2 system
Bronnikova, N. M.; Khrutskaya, E. V.; Khovritchev, M. Yu.
A catalogue of positions and proper motions of 58483 stars (Pul-3) has been constructed at the Pulkovo observatory. The Pul-3 is based on the results of measurements of photographic plates with galaxies (Deutsch's plan). All plates were taken using the Pulkovo Normal Astrograph (the first epoch is in the 1950s and the second epoch is in the 1970s)…