Results 1 to 10 of about 10,195 (153)
An Ap Star Catalog Based on LAMOST DR9
The Astrophysical Journal, 2023 We present a sample of 2700 Ap stars in the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) DR9 catalog. The candidates are first selected to be in a temperature range typical of Ap stars by using the BP − RP color index from Gaia DR3.
Fangfei Shi +4 more
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Most Rotational Variables Dominated by a Single Bright Feature Are α 2 CVn Stars
The Astronomical Journal, 2023 We previously reported a rare class of variable star light curves isolated from a sample of 4.7 million candidate variables from the ATLAS survey. Dubbed “UCBH” light curves, they have broad minima and narrow, symmetrical maxima, with typical periods of ...
A. N. Heinze +2 more
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The roAp Stars Observed by the Kepler Space Telescope
Frontiers in Astronomy and Space Sciences, 2021 Before the launch of the Kepler Space Telescope, most studies of the rapidly oscillating Ap (roAp) stars were conducted with ground-based photometric B observations, supplemented with high-resolution time-resolved spectroscopy and some space observations
Daniel L. Holdsworth
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Magnetic fields in non-convective regions of stars [PDF]
Royal Society Open Science, 2017 We review the current state of knowledge of magnetic fields inside stars, concentrating on recent developments concerning magnetic fields in stably stratified (zones of) stars, leaving out convective dynamo theories and observations of convective ...
Jonathan Braithwaite, Henk C. Spruit
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Ancient didactic astronomical texts [PDF]
Hypothekai, 2021 The article focuses on ancient astronomy as an academic dis-cipline. Antiquity created a holistic image of the world and a cul-ture of thinking, in which the natural and exact sciences and lib-eral arts were not artificially differentiated and remained ...
Andrew Fesenko
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Search for Oscillations in Some Ap Stars [PDF]
Symposium - International Astronomical Union, 1988 Photometric observations of some Ap stars with a 50 cm telescope have been carried out at Izaña (Tenerife) in February 1986. The stars observed were, generally, magnetic - cool Ap stars. A search for global oscillations in the range 3 to 15 minutes has been undertaken and they seem to be present in some of the stars observed.
J.A. Belmonte +2 more
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Rapidly Oscillating Ap Stars [PDF]
Annual Review of Astronomy and Astrophysics, 1982 Article de synthese sur les etoiles Ap a oscillation rapide (roAp) portant sur HR 3831 et le modele de pulsateur oblique, HR 1217 et l'asteroseismologie, les modeles de pulsateurs «tachetes» (Mathys G., 1985, Astron. Astrophys., 151), HD 60435 et le temps de vie des modes de pulsation, les changements de periode, les mecanismes d'excitation, la ...
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A Brightness-Referenced Star Identification Algorithm for APS Star Trackers [PDF]
Sensors, 2014 Star trackers are currently the most accurate spacecraft attitude sensors. As a result, they are widely used in remote sensing satellites. Since traditional charge-coupled device (CCD)-based star trackers have a limited sensitivity range and dynamic range, the matching process for a star tracker is typically not very sensitive to star brightness.
Zhang, Peng +3 more
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Research Paper: Analytical Solution of the Equation Related to the Oscillations of Ap Pulsating Stars Under the Effect of Rotation [PDF]
فیزیک کاربردی ایرانRapidly oscillating Ap stars are a special type of variable stars that are not in hydrostatic equilibrium. Their pulsation period is very short compared to other stars of this group and is less than one hour.
Fatemeh Azizi
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Postural and Head Control Given Different Environmental Contexts
Frontiers in Neurology, 2021 Virtual reality allows for testing of multisensory integration for balance using portable Head Mounted Displays (HMDs). HMDs provide head kinematics data while showing a moving scene when participants are not.
Anat V. Lubetzky +5 more
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