Results 21 to 30 of about 170,850 (201)

Disentangling planetary orbits from stellar activity in radial-velocity surveys [PDF]

open access: yes, 2013
The majority of extra-solar planets have been discovered (or confirmed after follow-up) through radial-velocity (RV) surveys. Using ground-based spectrographs such as High Accuracy Radial Velocity Planetary Search (HARPS) and HARPS-North, it is now ...
Segransan, Damien   +41 more
core   +1 more source

Stellar magnetism : empirical trends with age and rotation [PDF]

open access: yes, 2014
AAV acknowledges support from a Royal Astronomical Society Fellowship and from the Swiss National Science Foundation via an Ambizione Fellowship. SGG acknowledges support from the Science and Technology Facilities Council (STFC) via an Ernest Rutherford ...
G. Hussain   +45 more
core   +1 more source

Stellar Structure [PDF]

open access: yesNature, 1931
\textit{E. A. Milne} hat mehrere Einwände gegen die Jeanssche Theorie des Sterninnerns erhoben [``Stellar structure and the origin of stellar energy'', Nature 127, 16--27 (1931; \url{doi:10.1038/127016a0})]. Er behauptet, daß Jeans das Vorhandensein von Riesen, Zwergen und weißen Zwergen nur durch Zuhilfenahme von ad hoc-Hypothesen, die der Physik ...
Russell, H. N., Atkinson, R. d'E.
  +6 more sources

Tracing kinematic (mis)alignments in CALIFA merging galaxies : Stellar and ionized gas kinematic orientations at every merger stage [PDF]

open access: yes, 2015
J.M.A. and V.W. acknowledge support from the European Research Council Starting Grant (SEDmorph; P.I. V. Wild).We present spatially resolved stellar and/or ionized gas kinematic properties for a sample of 103 interacting galaxies, tracing all merger ...
Ziegler, Katharina B.   +71 more
core   +2 more sources

M-dwarf stellar winds : the effects of realistic magnetic geometry on rotational evolution and planets [PDF]

open access: yes, 2014
AAV acknowledges support from a Royal Astronomical Society Fellowship. JM acknowledges support from a fellowship of the Alexander von Humboldt foundation.We perform three-dimensional numerical simulations of stellar winds of early-M-dwarf stars.
Morin, J.   +11 more
core   +1 more source

Hot super-Earths stripped by their host stars

open access: yesNature Communications, 2016
Theory predicts a deficit of super-Earth sized planets, which orbit close to their host star. Here, Lundkvist et al. use data from the NASA Kepler mission to show that this deficit is also seen in observations, thereby providing new insight into ...
M. S. Lundkvist   +28 more
doaj   +1 more source

Spectroscopic Follow-up of Gaia Exoplanet Candidates: Impostor Binary Stars Invade the Gaia DR3 Astrometric Exoplanet Candidates

open access: yesThe Astronomical Journal, 2023
In this paper, we report on the follow-up of six potential exoplanets detected with Gaia astrometry and provide an overview of what is currently known about the nature of the entire Gaia astrometric exoplanet candidate sample, 72 systems in total.
Marcus L. Marcussen, Simon H. Albrecht
doaj   +1 more source

cx2204/stellar-radius: stellar radius microphysics

open access: yes, 2022
Full Changelog: https://github.com/cx2204/stellar-radius/commits/v1.
cx2204
core   +1 more source

Databases of Publications and Observations as a Part of the Crimean Astronomical Virtual Observatory

open access: yesOpen Astronomy, 2015
We describe the main principles of formation of databases (DBs) with information about astronomical objects and their physical characteristics derived from observations obtained at the Crimean Astrophysical Observatory (CrAO) and published in the ...
Shlyapnikov A.   +2 more
doaj   +1 more source

Stellar Motions and Stellar Dynamics [PDF]

open access: yesTransactions of the International Astronomical Union, 1962
The texts of the twelve prepared contributions, often in abbreviated form, are given first; they are followed by a summary of the discussion on all the contributions considered together.
A. Blaauw   +8 more
openaire   +1 more source

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