An international research, led by scientists from the University of Sheffield and with the participation of the Instituto de Astrofísica de Canarias, has...
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NewsScientists discover the first pulsating white dwarf in an eclipsing binary system
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PublicationStar formation in stellar systems
The present volume on stellar formation discusses basic physical principles relevant to such processes, regions of recent star formation, galaxy formation and...
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PublicationStellar integrated fluxes for 216 stars in the wavelength range 380 nm-900 NM
The paper reports measurements of the integrated fluxes over the wavelength range 380 nm - 900 nm for 216 stars using a Reticon spectrometer in conjunction with...
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PublicationThe active phase of the symbiotic star BF Cygni
The activity phase of BF Cygni discovered in May 1989 and which lasted about two years is examined. The UV emission lines, usually strong during quiescence...
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PublicationThe Central Star of NGC 2346 as a Clue to Binary Evolution through the Common Envelope Phase
We present an analysis of the binary central star of the planetary nebula NGC 2346 based on archival data from the International Ultraviolet Explorer, and new...
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PublicationThe contribution to population in ellipticals of blue stragglers - A test of their origin
An observational test of the binary hypothesis for the origin of the blue straggler (BS) stars has been performed searching for radial velocity variables among...
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PublicationThe Mass of the Neutron Star in CYG X-2 (V1341 CYG)
Cygnus X-2 is one of the brightest and longest known X-ray sources. We present high resolution optical spectroscopy of Cyg X-2 obtained over 4 years which gives...
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PublicationThe peculiar nature of BD + 24 deg 676
The H-alpha emission star BD + 24 deg 676, formerly classified as a T Tauri star and more recently as a Herbig Ae star, has been observed at moderately high...
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PublicationThe System Parameters of the Polars MR SER and ST LMi
We obtain the Na I lambda 8183,8195 absorption line radial velocity curves for the polars ST LMi and MR Ser, from which we find the semi-amplitudes to be Kabs...