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Binarity and multiperiodicity in high-amplitude delta Scuti stars
A. Derekas, L. L. Kiss, T. R. Bedding +10
We have carried out a photometric and spectroscopic survey of bright high-amplitude delta Scuti (HADS) stars. The aim was to detect binarity and multiperiodicity (or both) in order…
Physical parameters and multiplicity of five southern close eclipsing binaries
T. Szalai, L. L. Kiss, Sz. Meszaros +2
Aims: Detect tertiary components of close binaries from spectroscopy and light curve modelling; investigate light-travel time effect and the possibility of magnetic activity cycles…
The first year of SN 2004dj in NGC 2403
J. Vinko, K. Takats, K. Sarneczky +17
New BVRI photometry and optical spectroscopy of the Type IIp supernova 2004dj in NGC 2403, obtained during the first year since discovery, are presented. The progenitor cluster, Sa…
Binarity and multiperiodicity in high-amplitude delta Scuti stars
A. Derekas, L. L. Kiss, B. Csak +6
We present our first results for a sample of southern high-amplitude delta Scuti stars (HADS), based on a spectrophotometric survey started in 2003. For CY Aqr and AD CMi, we found…
New clues on outburst mechanisms and improved spectroscopic elements of the black-hole binary V4641 Sagittarii
C. Lindstrom, J. Griffin, L. L. Kiss +4
We present spectroscopic observations of the black-hole binary V4641 Sagittarii, obtained between 4th July 2004 and 28th March 2005, which cover the minor outburst of the star in e…
Photometry of SN 2002bo with template image subtraction
Gy. M. Szabo, K. Sarneczky, J. Vinko +4
VRI photometry of the type Ia supernova 2002bo is presented. This SN exploded in a dusty region of the host galaxy NGC 3190, thus, subtraction of a template frame was necessary to…