Results 41 to 50 of about 5,591,095 (382)
On the irregular variations in the light curves of RY Vul
Odessa Astronomical Publications, 2018 The star RY Vul according General Catalogue of Variable Star (GCVS) is RR Lyr variable, but period and initial epoch are unknown. To determine these parameters the photometric observations during several seasons in 201 1-201 7 of the variable star RY Vul
S. N. Udovichenko, L. E. Keir
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SN 2015bh: NGC 2770's 4th supernova or a luminous blue variable on its way to a Wolf-Rayet star? [PDF]
, 2016 Very massive stars in the final phases of their lives often show unpredictable outbursts that can mimic supernovae, so-called, "SN impostors", but the distinction is not always straigthforward.
C. Thöne +25 more
semanticscholar +1 more source
GENERAL CATALOGUE OF VARIABLE STARS: CURRENT STATUS AND NEW NAME-LISTS
Odessa Astronomical Publications, 2010 A short history of variable-star catalogs is presented. After the second World War, the International Astronomical Union asked astronomers of the Soviet Union to become responsible for variable-star catalogs. Currently, the catalog is kept electronically
N. N. Samus +4 more
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Variable stars in clusters [PDF]
Astronomische Nachrichten, 1898 n ...
S. I. Bailey, E. C. Pickering
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The Herschel view of the nebula around the luminous blue variable star AG Carinae [PDF]
, 2015 Far-infrared Herschel PACS imaging and spectroscopic observations of the nebula around the luminous blue variable (LBV) star AG Car have been obtained along with optical imaging in the Hα+[N ii] filter.
C. Vamvatira-Nakou +7 more
semanticscholar +1 more source
Journal of Astronomy and Space Sciences, 2019 The purpose of this study was to develop a period analysis algorithm for detecting new variable stars in the time-series data observed by charge coupled device (CCD). We used the data from a variable star monitoring program of the CBNUO.
Kim, Dong-Heun +3 more
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Cataclysmic Variable Stars [PDF]
International Astronomical Union Colloquium, 1984 AbstractThe properties of cataclysmic variable outbursts are reviewed, and interpreted in terms of dynamical instabilities by the red component, and subsequent evolution of the white dwarf accretion disc subject to a mass transfer burst in the transfer stream.
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Long-period variable stars in NGC 147 and NGC 185 – I. Their star formation histories [PDF]
, 2016 NGC 147 and NGC 185 are two of the most massive satellites of the Andromeda galaxy (M 31). Close together in the sky, of similar mass and morphological type dE, they possess different amounts of interstellar gas and tidal distortion.
Roya H. Golshan +4 more
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