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Variable-star

Many new variable stars discovered in the core of the globular cluster NGC 6715 (M54) with EMCCD observations

Many new variable stars discovered in the core of the globular cluster NGC 6715 (M54) with EMCCD observations

... known variable star content in NGC 6715 and the numbering systems of the variable stars while we were working on these ...for Star and Planet Formation is funded by the Danish National ...

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COMMISSIONS 27 AND 42 OF THE IAU INFORMATION BULLETIN ON VARIABLE STARS

COMMISSIONS 27 AND 42 OF THE IAU INFORMATION BULLETIN ON VARIABLE STARS

... the variable nature of the star which is classified as a probable ...The star pointed to by the CVSGC at ...not variable. The correct coordinates of the star identified by Caputo et ...

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THE VARIABLE CARBON STAR CGCS 6107

THE VARIABLE CARBON STAR CGCS 6107

... our star is quite red (R − I ∼ 2), therefore a systematic color term is expected: however there were no stars of comparable colors in the field of view so that we could not compute reliable ...the star, and ...

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GSC, or determined by the authors. Sometimes the ac-

GSC, or determined by the authors. Sometimes the ac-

... Thanks are due to S.V. Antipin, O.V. Durlevich, M.S. Frolov, N.N. Kireeva, and E.N. Pastukhova for their help during the preparation of the present Name-List and to all members of the GCVS team who prepared information ...

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The first post Kepler brightness dips of KIC 8462852

The first post Kepler brightness dips of KIC 8462852

... We present a photometric detection of the first brightness dips of the unique variable star KIC 8462852 since the end of the Kepler space mission in 2013 May. Our regular photometric surveillance started in ...

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IBVS Volume 4801

IBVS Volume 4801

... their variable star names within ...a variable, its ordinal number from Table 1 is given, as well as identifications with several major catalogues and identifications nec- essary to find this ...

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DISCOVERY OF IRREGULAR VARIABILITY OF FIVE STARS IN THE VICINITY OF THE YOUNG STELLAR OBJECT V645 CYGNI

DISCOVERY OF IRREGULAR VARIABILITY OF FIVE STARS IN THE VICINITY OF THE YOUNG STELLAR OBJECT V645 CYGNI

... massive variable star V645 Cyg and confirmed variability of one suspected ...of Variable Stars (GCVS) the amplitudes of the IN type variables have values in the range from ...

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LONG PERIOD VARIABLES IN STELLAR CLUSTERS: IC4651

LONG PERIOD VARIABLES IN STELLAR CLUSTERS: IC4651

... 150 variable star candidates detected in the observed field, the long period variables were selected based on the brightness (on the upper giant branch), timescale of the variation (more than 30 days), and ...

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Polarimetric evidence of a white dwarf pulsar in the binary system AR Scorpii

Polarimetric evidence of a white dwarf pulsar in the binary system AR Scorpii

... The variable star AR Sco was recently discovered to pulse in brightness every ...low-mass star in a tight, ...neutron star pulsars, the pulsed luminosity of AR Sco is powered by the spin-down ...

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FIRST SOLUTION OF THE LIGHT CURVE OF THE NEW VARIABLE STAR 3UC 281-203711

FIRST SOLUTION OF THE LIGHT CURVE OF THE NEW VARIABLE STAR 3UC 281-203711

... physical parameters of the primary component. Estimates of the spectral class vary in the range A0 − F0, depending on the physical parameter (mass or temperature) used for the estimate. The values of the radius for the ...

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V2027 Cyg means the amplitude measured

V2027 Cyg means the amplitude measured

... Thanks are due to S.V. Antipin for his assistance in GSC identications and positional determinations, to E.N. Pastukhova for help during the preparation of the computer version of the present Name-List, and to members of ...

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The Magnetic Field in the Stability  of the Stars

The Magnetic Field in the Stability of the Stars

... The theoretical frame developed by A. S. Eddington is used in this paper in order to study the problem of internal structure and stars stability. A new hypothesis is developed that consists of assume that at early stage ...

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The Galah survey: classification and diagnostics with t-SNE reduction of spectral information

The Galah survey: classification and diagnostics with t-SNE reduction of spectral information

... Galah is an ongoing high-resolution spectroscopic survey with the goal of disentangling the formation history of the Milky Way using the fossil remnants of disrupted star formation sites that are now dispersed ...

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Compact objects in active galactic nuclei and X ray binaries

Compact objects in active galactic nuclei and X ray binaries

... neutron star transients, it is significantly higher than the emerging group of quiescent neutron star transients that are very faint in quiescence, with quiescent luminosities of less than 10 32 ergs s −1 ...

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Laboratory analogue of a supersonic accretion column in a binary star system

Laboratory analogue of a supersonic accretion column in a binary star system

... cataclysmic variable (MCV) star system—see ...sequence star is pulled off by a highly magnetized white dwarf, a star subclass known as AM ...secondary star to follow the magnetic field ...

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Full orbital solution for the binary system in the Northern Galactic Disk microlensing event Gaia16aye

Full orbital solution for the binary system in the Northern Galactic Disk microlensing event Gaia16aye

... Radial Velocity measurements of nearby binary lenses o ff er an additional way for post-event verification of the orbital pa- rameters inferred from the microlensing model. So far, such an attempt was successfully ...

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KIC 2856960 : the impossible triple star

KIC 2856960 : the impossible triple star

... of star 3, star 1 moves from the left-hand side to the right-hand side and then back again, leading to two times of minimum impact parameter, with a point close to quadrature where there is a local maximum ...

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Roche tomography of cataclysmic variables - VI. Differential rotation of AE Aqr - not tidally locked!

Roche tomography of cataclysmic variables - VI. Differential rotation of AE Aqr - not tidally locked!

... secondary star to the total system lumi- nosity is constantly varying, and there is an unknown contribution to each spectrum due to variable light from the accretion ...another star in the slit, but ...

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The Star Scene Modeling and Generation for Hardware in the loop Simulation

The Star Scene Modeling and Generation for Hardware in the loop Simulation

... the star sensor image plane is ...the star sensor in the equatorial inertial coordinate system O-XYZ is described by the right ascension angle, α, the declination angle, β, and the rotation angle of the ...

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TOYS   time domain observations of young stars

TOYS time domain observations of young stars

... The new observations presented in the previous sections provide evidence favouring the disk wind scenario. Most notably, the LT spectra demonstrated that the blue-shifted peak of the Hα line has become suppressed during ...

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