Results 21 to 30 of about 579,982 (342)
The SAMI Galaxy Survey: first detection of a transition in spin orientation with respect to cosmic filaments in the stellar kinematics of galaxies [PDF]
Monthly notices of the Royal Astronomical Society, 2019 We present the first detection of mass-dependent galactic spin alignments with local cosmic filaments with >2σ confidence using IFS kinematics. The 3D network of cosmic filaments is reconstructed on Mpc scales across GAlaxy and Mass Assembly fields ...
C. Welker +19 more
semanticscholar +1 more source
The Origin of the Nuclear Star-forming Ring in NGC 3182
The Astronomical Journal, 2023 We investigate the stellar and ionized gas kinematics, and stellar populations of NGC 3182 galaxy using integral field spectrograph data from the Calar Alto Legacy Integral Field Area survey. We try to clarify the nature of the ring structure in NGC 3182.
Mina Pak +3 more
doaj +1 more source
Time-delay cosmographic forecasts with strong lensing and JWST stellar kinematics [PDF]
Monthly notices of the Royal Astronomical Society, 2019 We present a joint strong lensing and stellar dynamical framework for future time-delay cosmography purposes. Based on a pixelated source reconstruction and the axisymmetric Jeans equations, we are capable of constraining cosmological distances and ...
A. Yıldırım, S. Suyu, A. Halkola
semanticscholar +1 more source
The Astrophysical Journal, 2023 We have for the first time identified the early stellar disk in the Milky Way by using a combination of elemental abundances and kinematics. Using data from APOGEE DR17 and Gaia we select stars in the Mg–Mn–Al–Fe plane with elemental abundances ...
Sofia Feltzing, Diane Feuillet
doaj +1 more source
Stellar Motions in the Polar Ring Galaxy NGC 4650A [PDF]
, 2003 We present the first measurement of the stellar kinematics in the polar ring of NGC 4650A. There is well defined rotation, with the stars and gas rotating in the same direction, and with similar amplitude.
Combes F., Rob A. Swaters, Vera C. Rubin
core +1 more source
New constraints on the central mass contents of Omega Centauri from combined stellar kinematics and pulsar timing [PDF]
Astronomy & AstrophysicsAims. We performed a combined analysis of stellar kinematics with line-of-sight accelerations of millisecond pulsars (MSPs) to probe the mass content of Omega Centauri (ω Cen).
Andr'es Banares-Hern'andez +3 more
semanticscholar +1 more source
Gaia stellar kinematics in the head of the Orion A cloud: runaway stellar groups and gravitational infall [PDF]
Monthly notices of the Royal Astronomical Society, 2019 This work extends previous kinematic studies of young stars in the head of the Orion A cloud (OMC-1/2/3/4/5). It is based on large samples of infrared, optical, and X-ray selected pre-main-sequence stars with reliable radial velocities and Gaia-derived
K. Getman +5 more
semanticscholar +1 more source
Astronomy & AstrophysicsSpatially resolved stellar kinematics has become a key ingredient in time-delay cosmography to break the mass-sheet degeneracy in the mass profile and in turn provide a precise constraint on the Hubble constant and other cosmological parameters.
Shajib Anowar J. +17 more
doaj +3 more sources
Stellar kinematics and interstellar turbulence [PDF]
Symposium - International Astronomical Union, 1979 It is well known that the velocity dispersion of nearby stars increases systematically with age, and this fact is conventionally explained by postulating that stars are randomly accelerated by encounters with massive gas clouds (Spitzer & Schwarzschild 1951, 1953; Wielen 1977).
openaire +2 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