Results 21 to 30 of about 785 (206)
Monthly Notices of the Royal Astronomical Society, 2023 ABSTRACT We employ a sample of 135 873 RR Lyrae stars (RRLs) with precise photometric-metallicity and distance estimates from the newly calibrated P–ϕ31–R21–[Fe/H] and Gaia G band P–R21–[Fe/H] absolute magnitude–metallicity relations of Li et al., combined with available proper motions from Gaia EDR3, and 6955 systemic radial velocities ...
Jonathan Cabrera Garcia +11 more
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Large scale kinematics and dynamical modelling of the Milky Way nuclear star cluster [PDF]
Astronomy & Astrophysics, 2014 Within the central 10pc of our Galaxy lies a dense nuclear star cluster (NSC), and similar NSCs are found in most nearby galaxies. Studying the structure and kinematics of NSCs reveals the history of mass accretion of galaxy nuclei. Because the Milky Way (MW) NSC is at a distance of only 8kpc, we can spatially resolve the MWNSC on sub-pc scales.
Feldmeier, A. +8 more
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CO Kinematics, Star Formation and Dynamical Evolution of the Lensed Starburst NGC 4102 [PDF]
International Astronomical Union Colloquium, 1996 The circumnuclear (inner kiloparsec) regions of spiral galaxies are time-dependent systems whose morphology and dynamics can change significantly over less than a Hubble time. To develop an insight into this evolution it is important to study the fate of gas driven towards the central parts of a galaxy especially near the dynamical resonances.
Shardha Jogee, Jeffrey D. P. Kenney
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New Understanding of Large Magellanic Cloud Structure, Dynamics, and Orbit from Carbon Star Kinematics [PDF]
The Astronomical Journal, 2002 57 pages, LaTeX, with 11 PostScript figures.
van der Marel, Roeland P. +3 more
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Dynamical History of the Stars in Relation with Age, Kinematics, Abundances, Birthrate [PDF]
International Astronomical Union Colloquium, 1977 A large amount of work has been devoted to correlations between kinematic properties and spectral types in order to improve our knowledge of stellar populations in our Galaxy and hence to deduce its structure and evolution. The classical results will not be repeated in the present review paper.
openaire +1 more source
Kinematic model inversions of hot star recurrent DAC data – tests against dynamical CIR models [PDF]
Astronomy & Astrophysics, 2004 The Discrete Absorption Components (DACs) commonly observed in the ultraviolet lines of hot stars have previously been modelled by dynamical simulations of Corotating Interaction Regions (CIRs) in their line-driven stellar winds. Here we apply the kinematic DAC inversion method of Brown et al.
Krticka, J. +3 more
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Galactic kinematics and dynamics from RAVE stars
, 2013 We analyse the kinematics of ~400000 RAVE stars. We split the sample into hot and cold dwarfs, red-clump and non-clump giants. The kinematics of the clump giants are consistent with being identical with those of non-clump giants. We fit Gaussian velocity ellipsoids to the meridional-plane components of velocity of each star class and give formulae from
Binney, J +17 more
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The star formation history of Upper Scorpius and Ophiuchus
Astronomy & Astrophysics, 2022 Context. Understanding how star formation begins and propagates through molecular clouds is a fundamental but still open question. One major difficulty in addressing this question is the lack of precise 3D kinematics and age information for young stellar populations.
Miret-Roig, N. +5 more
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THE MOSDEF SURVEY: DYNAMICAL AND BARYONIC MASSES AND KINEMATIC STRUCTURES OF STAR-FORMING GALAXIES AT 1.4 ≤ z ≤ 2.6 [PDF]
The Astrophysical Journal, 2016 ABSTRACT We present gas kinematics for 178 star-forming galaxies at from the MOSFIRE Deep Evolution Field survey.
Sedona H. Price +13 more
openaire +4 more sources
Natural Frequencies of Levodopa‐Induced Dyskinesia in Parkinson's Disease
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objectives Abnormal involuntary movements, known as dyskinesias, are common complications of levodopa treatment in patients with Parkinson's disease and can significantly impair quality of life. The underlying pathophysiology remains unclear, and current therapeutic options are limited.
Ioannis U. Isaias +3 more
wiley +1 more source