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Decoding Galactic Merger Histories
Galaxies, 2017 Galaxy mergers are expected to influence galaxy properties, yet measurements of individual merger histories are lacking. Models predict that merger histories can be measured using stellar halos and that these halos can be quantified using observations of
Eric F. Bell +7 more
doaj +1 more source
Probing baryonic processes and gastrophysics in the formation of the Milky Way dwarf satellites: I. metallicity distribution properties [PDF]
, 2014 In this paper, we study the chemical properties of the stars in the dwarf satellites around the MW-like host galaxies, and explore the possible effects of several baryonic processes, including supernova (SN) feedback, the reionization of the universe and
Hou, Jun, Lu, Youjun, Yu, Qingjuan
core +1 more source
Stellar-evolution limits on axion properties [PDF]
Nuclear Physics B - Proceedings Supplements, 1999 If axions exist, they are copiously produced in hot and dense plasmas, carrying away energy directly from the interior of stars. Various astronomical observables constrain the operation of such anomalous stellar energy-loss channels and thus provide restrictive limits on the axion interactions with photons, nucleons, and electrons.
openaire +2 more sources
Stellar Winds on the Main-Sequence II: the Evolution of Rotation and Winds
, 2015 Aims: We study the evolution of stellar rotation and wind properties for low-mass main-sequence stars. Our aim is to use rotational evolution models to constrain the mass loss rates in stellar winds and to predict how their properties evolve with time on
Brott, I. +3 more
core +3 more sources
Kinematic and stellar population properties of the counter-rotating components in the S0 galaxy NGC 1366 [PDF]
, 2017 Context. Many disk galaxies host two extended stellar components that rotate in opposite directions. The analysis of the stellar populations of the counter-rotating components provides constraints on the environmental and internal processes that drive ...
Buson, L. M. +9 more
core +2 more sources
Chaotic Dynamics of Stellar Spin in Binaries and the Production of Misaligned Hot Jupiters
EPJ Web of Conferences, 2015 Motivated by observed hot Jupiter systems with high stellar obliquities, we examine the dynamics of stellar spin in planetary systems with distant stellar companions, with inclinations sufficiently high so that the planet undergoes Kozai-Lidov ...
Anderson Kassandra R. +2 more
doaj +1 more source
No difference in orbital parameters of RV-detected giant planets between 0.1 and 5 au in single vs multi-stellar systems [PDF]
, 2017 Our Keck/NIRC2 imaging survey searches for stellar companions around 144 systems with radial velocity (RV) detected giant planets to determine whether stellar binaries influence the planets' orbital parameters.
Batygin, Konstantin +10 more
core +3 more sources
Kinetic properties of fractal stellar media [PDF]
Monthly Notices of the Royal Astronomical Society, 2016 Kinetic processes in fractal stellar media are analysed in terms of the approach developed in our earlier paper (Chumak \& Rastorguev, 2015) involving a generalization of the nearest neighbour and random force distributions to fractal media. Diffusion is investigated in the approximation of scale-dependent conditional density based on an analysis of ...
O. V. Chumak, A. S. Rastorguev
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The Astronomical Journal, 2023 The demographics of young exoplanets can shed light on their formation and evolution processes. Exoplanet properties are derived from the properties of their host stars.
Rachel B. Fernandes +9 more
doaj +1 more source
Stellar properties and nuclear matter constraints [PDF]
Physical Review C, 2016 We have analyzed stellar properties of the relativistic mean-field (RMF) parametrizations shown to be consistent with the recently studied constraints related to nuclear matter, pure neutron matter, symmetry energy and its derivatives [Dutra et al., Phys. Rev. C 90, 055203 (2014)].
Dutra, Mariana +2 more
openaire +2 more sources