Results 21 to 30 of about 7,393,464 (385)
The rotation period distribution of the rich Pleiades-age southern open cluster NGC 2516 [PDF]
Astronomy & Astrophysics, 2020 Aims. We wish to measure the cool star rotation period distribution for the Pleiades-age rich open cluster NGC 2516 and use it to determine whether cluster-to-cluster variations exist in otherwise identical open clusters. Methods.
D. Fritzewski +3 more
semanticscholar +1 more source
The Rotation-period of Neptune [PDF]
Monthly Notices of the Royal Astronomical Society, 1915 M. Hall
openaire +2 more sources
THE ROTATION PERIOD OF THE PLANET-HOSTING STAR HD 189733 [PDF]
, 2007 We present synoptic optical photometry of HD 189733, the chromospherically active parent star of one of the most intensively studied exoplanets. We have significantly extended the timespan of our previously reported observations and refined the estimate ...
Gregory W. Henry, Joshua N. Winn
openalex +5 more sources
Rotation Period Detection for Earth-like Exoplanets
Astronomical Journal, 2021 A terrestrial planet’s rotation period is one of the key parameters that determines its climate and habitability. Current methods for detecting the rotation period of exoplanets are not suitable for terrestrial exoplanets. Here we demonstrate that, under
Jiazheng Li +7 more
semanticscholar +1 more source
Journal of Geophysical Research: Space Physics, 2021 The delayed ionospheric response is analyzed for two well‐defined 27‐day solar rotation periods in the year 2019 with solar radio flux index F10.7 and Global‐scale Observations of the Limb and Disk (GOLD) data, like solar extreme ultraviolet (EUV) flux ...
Erik Schmölter +2 more
semanticscholar +1 more source
Turkish Journal of Forestry, 2021 At present, majority of commercial poplar plantations aimed at producing quality timbers with larger dimension are established in wider planting spacings in Turkey.
Sacit Koçer, Muhammed Kara
doaj +1 more source
Light curve analysis of main belt asteroids 4747, 5255, 11411, 15433, 17866
Open Astronomy, 2023 The main belt asteroids 4747, 5255, 11411, 15433, and 17866 were studied at the Baldone Astrophysical Observatory in the time span range 2018–2022. The obtained light curve data together with published Minor Planet Center data are analyzed with Fourier ...
Eglitis Ilgmars, Kristers Nagainis
doaj +1 more source
Rotation Periods of Asteroids Determined With Bootstrap Convex Inversion From ATLAS Photometry
Frontiers in Astronomy and Space Sciences, 2022 The rotation period is one of the fundamental physical characteristics of asteroids. It can be determined from photometric measurements by standard methods of time-series period analysis or by creating a physical model of an asteroid with the rotation ...
Josef Ďurech +3 more
doaj +1 more source
Rotational period of GQ Lupi [PDF]
Astronomy & Astrophysics, 2007 Aims. We wanted to determine the rotation parameters of GQ Lup A, thereby constraining the evolutionary history of the GQ Lup system. Methods. We have undertaken a photometric monitoring campaign on GQ Lup A consisting of two epochs spaced one year apart. We also searched the photometric archives to enlarge the data set. Results.
Broeg, C. +6 more
openaire +2 more sources
Determining the Rotation Periods of an Inactive LEO Satellite and the First Korean Space Debris on GEO, KOREASAT 1 [PDF]
Journal of Astronomy and Space Sciences, 2016 Inactive space objects are usually rotating and tumbling as a result of internal or external forces. KOREASAT 1 has been inactive since 2005, and its drift trajectory has been monitored with the optical wide-field patrol network (OWL-Net).
Jin Choi +15 more
doaj +1 more source