Journal ArticleDOI
On the spiral structure of disk galaxies. iii. comparison with observations.
TLDR
Density wave theory of galactic spirals, discussing hydrogen distribution, young star distribution, stellar migration, magnetic field structure, density waves in stellar formation, etc as discussed by the authors, etc.Abstract:
Density wave theory of galactic spirals, discussing hydrogen distribution, young star distribution, stellar migration, magnetic field structure, density waves in stellar formation, etcread more
Citations
More filters
Journal ArticleDOI
Control of star formation by supersonic turbulence
TL;DR: A review of the successes and problems of both the classical dynamical theory and the standard theory of magnetostatic support, from both observational and theoretical perspectives, is given in this paper.
Control of Star Formation by Supersonic Turbulence
TL;DR: A review of the successes and problems of both the classical dynamical theory and the standard theory of magnetostatic support, from both observational and theoretical perspectives, is given in this article.
Journal ArticleDOI
A High-Resolution Image of Atomic Hydrogen in the M81 Group of Galaxies
TL;DR: A map of atomic hydrogen in the nearest interacting group of galaxies (that dominated by M81), obtained by combining 12 separate fields observed with the Very Large Array, which should have detected all H I complexes more massive than 106 solar masses.
Journal ArticleDOI
The Milky Way's circular velocity curve between 4 and 14 kpc from APOGEE data
Jo Bovy,Carlos Allende Prieto,Carlos Allende Prieto,Timothy C. Beers,Dmitry Bizyaev,Luiz N. da Costa,Katia Cunha,Garrett Ebelke,Daniel J. Eisenstein,Peter M. Frinchaboy,Ana G. Pérez,Léo Girardi,Fred R. Hearty,David W. Hogg,David W. Hogg,Jon Holtzman,Marcio A. G. Maia,Steven R. Majewski,Elena Malanushenko,Viktor Malanushenko,Szabolcs Mészáros,Szabolcs Mészáros,David L. Nidever,Robert W. O'Connell,Christine O'Donnell,Audrey Oravetz,Kaike Pan,Helio J. Rocha-Pinto,Ricardo P. Schiavon,Donald P. Schneider,Mathias Schultheis,Michael F. Skrutskie,Verne V. Smith,David H. Weinberg,John C. Wilson,Gail Zasowski,Gail Zasowski +36 more
TL;DR: In this article, the authors measured the Milky Way rotation curve over the Galactocentric range 4 kpc R 14 kpc from the first year of data from the Apache Point Observatory Galactic Evolution Experiment.
Journal ArticleDOI
The distance to the Perseus spiral arm in the Milky Way.
TL;DR: The distance to the massive star–forming region W3OH in the Perseus spiral arm of the Milky Way is measured by triangulation, with Earth's orbit as one segment of a triangle, using the Very Long Baseline Array, resolving the long-standing problem that there is a discrepancy between different techniques used to determine distances.