Results 311 to 320 of about 73,293 (324)
Some of the next articles are maybe not open access.
Publications of the Astronomical Society of the Pacific, 1993
The relationship between the Galactic halo and bulge is discussed, with reference to early results from a survey for K giants in a field 2 kpc from the Galactic center and Zinn's (1992) data on globular-cluster kinematics. The data are currently too meager to decide whether the inner halo shades gradually into the bulge, although there are some ...
Paul Harding, Heather Morrison
openaire +2 more sources
The relationship between the Galactic halo and bulge is discussed, with reference to early results from a survey for K giants in a field 2 kpc from the Galactic center and Zinn's (1992) data on globular-cluster kinematics. The data are currently too meager to decide whether the inner halo shades gradually into the bulge, although there are some ...
Paul Harding, Heather Morrison
openaire +2 more sources
Is there dust in galactic haloes?
Nature, 1987The ubiquitous presence of dust within the disks of spiral galaxies is well established. Dust is present in large quantities over enormous extents in the Universe; for example, Burton1 concludes that, in our Galaxy, dust is distributed very similarly to the H I distribution, with an exponential radius in the plane of 8 kpc and an exponential scale ...
Santi Aiello +3 more
openaire +2 more sources
Proceedings of the International Astronomical Union, 2012
AbstractThe interstellar medium in galactic halos is described as a consequence of feedback mechanisms from processes related to star-formation in the disk. The presence of gas in galactic halos is also expected due to accretion of gas from the circumgalactic environment.
openaire +2 more sources
AbstractThe interstellar medium in galactic halos is described as a consequence of feedback mechanisms from processes related to star-formation in the disk. The presence of gas in galactic halos is also expected due to accretion of gas from the circumgalactic environment.
openaire +2 more sources
Astronomical & Astrophysical Transactions, 1997
The variety of observational data suggest that the Galactic halo contains beside non-baryonic matter a noticeable fraction of cold baryonic matter.
Peter Berczik, S. G. Kravchuk
openaire +2 more sources
The variety of observational data suggest that the Galactic halo contains beside non-baryonic matter a noticeable fraction of cold baryonic matter.
Peter Berczik, S. G. Kravchuk
openaire +2 more sources
1983
Summarised herein are the principal results of two papers to be published in full elsewhere. These are Paper I (Innanen, Harris and Webbink, 1982). and Paper II (Valtonen, Innanen and Tahtinen, 1982)
openaire +2 more sources
Summarised herein are the principal results of two papers to be published in full elsewhere. These are Paper I (Innanen, Harris and Webbink, 1982). and Paper II (Valtonen, Innanen and Tahtinen, 1982)
openaire +2 more sources
Annual Review of Astronomy and Astrophysics, 1982
The evidence that gas exists in the halo of the Galaxy is examined. The likely properties of halo gas intervening between QSOs and the Galaxy are extracted from observations of the galactic halo. The available data discussed include 21-cm observations, optical absorption lines, ultraviolet lines, and X-ray observations.
openaire +2 more sources
The evidence that gas exists in the halo of the Galaxy is examined. The likely properties of halo gas intervening between QSOs and the Galaxy are extracted from observations of the galactic halo. The available data discussed include 21-cm observations, optical absorption lines, ultraviolet lines, and X-ray observations.
openaire +2 more sources
1993
It is argued that the description of the magnetic field in halos of galaxies should take into account its dynamical coupling to the other major components of the interstellar medium, namely thermal plasma and cosmic rays (CR’s). It is then inevitable to have some loss of gas and CR’s (galactic wind) provided that there exist some 201C;open” magnetic ...
V. N. Zirakashvili +3 more
openaire +2 more sources
It is argued that the description of the magnetic field in halos of galaxies should take into account its dynamical coupling to the other major components of the interstellar medium, namely thermal plasma and cosmic rays (CR’s). It is then inevitable to have some loss of gas and CR’s (galactic wind) provided that there exist some 201C;open” magnetic ...
V. N. Zirakashvili +3 more
openaire +2 more sources
Observations of the galactic halo
1989After reviewing the history of the early research on gas in the Milky way halo, observational methods to investigate the halo are described. The meaning of the concepts Halo and HVC is discussed and selectional bias in databases is pointed out. The essentials of the interpretation of observed velocities are given. The scanty information on distances of
openaire +2 more sources
The Structure of the Galactic Halo
1987An analysis of the space distribution of metal-poor RR Lyrae stars from recent surveys suggests that the Galactic halo can be described in terms of a flattened (c/a ~ 0.6; vertical scale height ~ 1.6 kpc) inner component, which is dominant at the sun’s position, and a spherical outer component.
openaire +2 more sources
Clusters and the Galactic Halo
2015The Galactic Halo has long ceased to be a site of active star formation, but, as the first members of the Milky Way, halo stars have played a crucial role in probing the initial stages of galaxy formation. In particular, this year sees the fiftieth anniversary of one of the seminal works in that field, an analysis of the motions of a relatively small ...
openaire +2 more sources