Search Publications
Missions
Journals
Publication Years
Comet Hyakutake (C/1996 B2): Spectacular disconnection event and the latitudinal structure of the solar wind
Brandt, J. C.; Snow, M.; Mikuz, H. +2 more
Images of comet Hyakutake (C/1996 B2) are analyzed in conjunction with solar wind data from spacecraft to determine the relationship between solar wind conditions and plasma tail morphology. The disconnection event (DE) on March 25, 1996 is analyzed with the aid of data from the IMP-8 and WIND Earth-orbiting spacecraft and the DE is found to be co…
My Cruise Through the World of Astronomy
Blaauw, Adriaan
I was born in 1914 in Amsterdam. I grew up there, filling my teenage years with activities as an amateur astronomer. I later studied at Leiden University and volunteered at Leiden Observatory. From 1938 to 1945, I was assistant at the Kapteyn Institute in Groningen, including during the war years 1940 1945, returning to Leiden in October 1945. Aft…
Multicolour CCD measurements of nearby visual double stars. II
Strigachev, A.; Lampens, P.
We present accurate CCD astrometric and photometric data for 31 nearby visual double stars in the standard filters BVRI. The observations were collected with a 1.3-m telescope in 2001-2002 The results consist of relative astrometric positions (epoch, angular separation and position angle) and differential BVRI photometry of the components. Mean er…
Plasma convection across the polar cap, plasma mantle and cusp: Cluster EDI observations
Klecker, B.; Rème, H.; Quinn, J. +8 more
Available from http://www.copernicus.org/site/EGU/annales/22/7/2451.htm?FrameEngine=false;
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.