Results 81 to 90 of about 320,186 (190)
Measurement of the Mass and Stellar Population Distribution in M82 with the LBT
, 2012 We present a K-band spectroscopic study of the stellar and gas kinematics, mass distribution, and stellar populations of the archetypical starburst galaxy M82.
Cottrell +24 more
core +1 more source
Women in space: A review of known physiological adaptations and health perspectives
Experimental Physiology, EarlyView.Abstract Exposure to the spaceflight environment causes adaptations in most human physiological systems, many of which are thought to affect women differently from men. Since only 11.5% of astronauts worldwide have been female, these issues are largely understudied.
Millie Hughes‐Fulford +4 more
wiley +1 more source
Galaxy rotation curves and dissipation
The Astrophysical Journal, 1989 Une theorie est proposee pour expliquer la tendance des galaxies a disque a manifester des vitesses rotationnelles constantes en considerant l'hypothese suivant laquelle la dissipation d'energie est le facteur principal qui determine les formes finales des galaxies a disque.
openaire +2 more sources
Experimental Physiology, EarlyView.Abstract Microgravity is associated with stature increases, back pain and post‐flight intervertebral disc (IVD) herniation. This study aims to determine whether 30 s seated 50% body weight (BW) axial loading is comparable to 15 min sitting upright in 1 g upon changes in stature, anterior lumbar IVD height (via ultrasound), passive vertebral stiffness ...
David Marcos‐Lorenzo +6 more
wiley +1 more source
The rotation of galaxies as a consequence of a rotation of the Universe [PDF]
arXiv, 2006 Assuming a suitable rotation of the Universe as a whole, we can attribute the rotation of galaxies to it. Using Lagrangian Mechanics we then can find the equations governing the rotation of a galaxy. We find in this way the azimuthal equation, and we find its first integral.
arxiv
The Most Completely Sampled Rotation Curves for Galaxies [PDF]
, 1995 We have compiled high-resolution position-velocity diagrams observed along the major axes of nearby spiral galaxies in the CO-line emission, and derived rotation curves for the inner regions of the galaxies. We have combined the inner rotation curves with the outer HI and optical rotation curves to obtain the total rotation curves.
arxiv +1 more source
On the Rotation Curve of Disk Galaxies in General Relativity
The Astrophysical Journal, 2022 Abstract Recently, it has been suggested that the phenomenology of flat rotation curves observed at large radii in the equatorial plane of disk galaxies can be explained as a manifestation of general relativity (GR) instead of the effect of dark matter (DM) halos.
openaire +3 more sources
Mass Spectrometry Reviews, Volume 44, Issue 3, Page 213-453, May/June 2025.Abstract The use of matrix‐assisted laser desorption/ionization (MALDI) mass spectrometry for the analysis of carbohydrates and glycoconjugates is a well‐established technique and this review is the 12th update of the original article published in 1999 and brings coverage of the literature to the end of 2022.
David J. Harvey
wiley +1 more source
Refining the Oort and Galactic constants
, 1998 The local stellar kinematics of the Milky Way offer a useful tool for studying the rotation curve of the Galaxy. These kinematics -- usually parameterized by the Oort constants A and B -- depend on the local gradient of the rotation curve as well as its ...
Merrifield, M. R., Olling, R. P.
core +2 more sources
Ionospheric D Region: Characteristics Near Dawn and Dusk
Journal of Geophysical Research: Space Physics, Volume 130, Issue 4, April 2025.Abstract The characteristics of very low frequency (VLF) radio wave propagation in the Earth‐ionosphere waveguide are determined particularly through dawn and dusk using phase and amplitude measurements of man‐made signals propagating below the ionospheric D region. For the first time variations of “Wait” height and sharpness parameters, H' and β, have
Neil R. Thomson +2 more
wiley +1 more source