Results 11 to 20 of about 859 (266)
KINEMATICS OF STELLAR POPULATIONS IN POSTSTARBURST GALAXIES [PDF]
The Astrophysical Journal, 2015 Post-starburst galaxies host a population of early-type stars (A or F), but simultaneously lack indicators of ongoing star formation such as OII emission. Two distinct stellar populations have been identified in these systems: a young post-starburst population superimposed on an older host population.
Hiner, Kyle D., Canalizo, Gabriela
openaire +2 more sources
The Stellar Kinematics of Elliptical Galaxies [PDF]
Symposium - International Astronomical Union, 1987 The kinematic properties of elliptical galaxies are summarized. New developments are discussed in four areas: (i) the Faber-Jackson relation and the role of second parameters (ii) the luminosity-rotation relation (iii) the figures of elliptical galaxies and (iv) the mass-to-light ratio as a function of radius.
openaire +2 more sources
Local stellar kinematics from Hipparcos data [PDF]
Monthly Notices of the Royal Astronomical Society, 1998 (shortened) From a kinematically unbiased subsample of the Hipparcos catalogue we have redetermined as a function of colour the kinematics of main-sequence stars. The stars' mean heliocentric velocity nicely follows the asymmetric drift relation, except for stars blueward of B-V=0.1. Extrapolating to zero dispersion yields for the velocity of the Sun w.
Dehnen, W, Binney, JJ
openaire +3 more sources
Investigation of the Stellar Population of Several Polar Ring Galaxies
Galaxies, 2016 We present results of our investigation of two multi-spin galaxies which were taken from the catalog of polar ring galaxies. All of them possess nucleus-like knots.
Liliya Shalyapina +4 more
doaj +1 more source
, 2021 Integral field spectroscopic (IFS) surveys have revolutionised our understanding of the stellar dynamics in external galaxies at z~0. Studies of gas-phase dynamics and deep slit-based spectroscopy at high redshift show that galaxies have experienced significant dynamical evolution since z~1.
openaire +1 more source
Oort Constants and Local Stellar Kinematics from GCNS
Universe, 2023 Oort constants and local kinematics are vital parameters with which to study the structure and dynamics of the Milky Way. When GCNS was published, it provided a clean sample of stars in the solar vicinity, which gives us an ideal tool with which to ...
Sufen Guo, Zhaoxiang Qi
doaj +1 more source
The Astronomical Journal, 2023 Stellar kinematics and metallicity are key to exploring formation scenarios for galactic disks and halos. In this work, we characterized the relationship between kinematics and photometric metallicity along the line of sight to M31's disk.
Ivanna Escala +7 more
doaj +1 more source
oMEGACat. I. MUSE Spectroscopy of 300,000 Stars within the Half-light Radius of ω Centauri
The Astrophysical Journal, 2023 Omega Centauri ( ω Cen) is the most massive globular cluster of the Milky Way and has been the focus of many studies that reveal the complexity of its stellar populations and kinematics.
M. S. Nitschai +19 more
doaj +1 more source
Kinematic signatures of triaxial stellar systems [PDF]
Symposium - International Astronomical Union, 1993 Analytic dynamic models of triaxial stellar systems, such as elliptical galaxies and galactic bulges, can be used to calculate the velocity fields of systems in a wide range of potentials without the need for orbit integrations. We present results from a first application of these models, in the form of velocity fields projected onto the sky.
Richard Arnold +2 more
openaire +1 more source
Wrinkles in Time. I. Rapid Rotators Found in High-eccentricity Orbits
The Astrophysical Journal, 2023 Recent space-based missions have ushered in a new era of observational astronomy, where high-cadence photometric light curves for thousands to millions of stars in the solar neighborhood can be used to test and apply stellar age-dating methods, including
Rayna Rampalli +4 more
doaj +1 more source