Results 101 to 110 of about 901,551 (242)
New variable stars in the field of open cluster NGC188 [PDF]
Open European Journal on Variable Stars 157 (2013) 1, 2013 A photometric study of variable stars in the field of old open cluster NGC 188 is discussed. Observations were carried out in two bands R and I for 5513 stars up to R = 17 mag in the field of 1.5 x 1.5 grad. around the cluster. The photometric data were processed by the console application "Astrokit", which corrects brightness variations associated ...
arxiv
Variable Stars in the Field of Young Open Cluster NGC 581 [PDF]
arXiv, 2002 We present results of the search for variable stars in the field of young open cluster NGC 581. Based on 19 nights of observations, 6 new variable stars were discovered. Two of them turned out to be eclipsing binary systems. Another two detected variable stars are most probably of gamma Dor type.
arxiv
Photometric Analysis of the Cataclysmic Variable Star LT Eri
The Astronomical JournalLT Eri is a long-period eclipsing cataclysmic variable star (CV). This study investigates its outbursts, negative superhumps (NSHs), tilted-disk precession, eclipse-depth variations, and observed minus calculated ( O – C ) behavior, using photometric ...
Qi-Bin Sun +6 more
doaj +1 more source
FREQUENCY ANALYSIS OF PHOTOGRAPHIC OBSERVATIONS OF PULSATING STARS
Odessa Astronomical Publications, 2017 The Fourier analysis are performed for photoelectric and photographic B-observations (Goranskij and Shugarov, 1979) of RR Lyrae star RW Ari. Besides the main frequency f0 and four its first harmonics two more frequencies are found: f1 =f0 /3 and f2 =0 ...
V. P. Bezdenezhnyi
doaj +1 more source
MODELING THE OPTICAL SPECTRUM OF ROMANO‘S STAR IN MINIMUM BRIGHTNESS
Odessa Astronomical Publications, 2010 V532, known as Romano‘s star, is an interesting variable star located in the M33 galaxy. We study its spectral variability and the optical spectrum in minimum brightness.
O. Maryeva, P. Abolmasov
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The Magnetic Variable Stars [PDF]
International Astronomical Union Colloquium, 1976 The peculiar A stars were first noted as peculiar because they exhibit anomalously strong lines of one or more of the elements Si, Cr, Mn, Sr, and Eu. These diverse objects are all called Ap stars because their assigned spectral types fall predominantly in the range B9-F0.
openaire +2 more sources
Open Astronomy, 2013 The star V2282 Sgr is positionally consistent with a strong Chandra X-ray and a Spitzer/IRAC mid-infrared source. We derived its long-term I-band light curve from the photographic archives of the Asiago and Catania Observatories, covering the years from ...
Nesci R. +4 more
doaj +1 more source
THE ECLIPSING BINARY SYSTEM BM ORI
Odessa Astronomical Publications, 2017 Photometric and spectroscopic features of eclipsing binary system BM Ori can be described well by a model in which the components are the primary star B3 ZAMS, the secondary F2 pre-main sequence star and a dusty envelope of large grains around the ...
N. I. Bondar', E. A Vitrichenko
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