Results 151 to 160 of about 53,761 (176)

Extragalactic Astronomy with 2MASS

1998
Observations for the Two-Micron All Sky Survey (2MASS) have recently begun at the northern hemisphere site. The project is now in the final phases of tuning the data analysis software in preparation for running the “pipeline” at full bore. The path to completing the extragalactic portion of the pipeline, called GALWORKS, was complicated. It required an
S. E. Schneider   +4 more
openaire   +1 more source

Oort and Extragalactic Astronomy

1980
Our understanding of the nature of external galaxies, incomplete as it still is, has depended cast essentially on the understanding of our own Milky Way. And one cannot think of any facet of knowledge about our Galaxy without paying tribute to Jan Oort’s elucidation of its mysteries.
Margaret Burbidge, Geoffrey Burbidge
openaire   +1 more source

Extragalactic astronomy with the OHANA array

SPIE Proceedings, 2003
The Optical Hawaiian Array for Nanoradian Astronomy (OHANA) will allow resolutions on the order of a fraction of a milliarcsecond in the near infrared. This corresponds to the suspected size of the Broad Line Region and might even allow to study the structure of the base of jets.
Woillez, Julien M.   +4 more
openaire   +2 more sources

Using SNAP for Galactic & extragalactic astronomy

Astrophysics and Space Science, 2007
SNAP, the SuperNova Acceleration Probe, is planned as a space-based telescope designed specifically to search for and monitor cosmological supernovae and weak lensing. In this paper we propose some other mission objectives which are of great importance in the fields of Galactic and extragalactic astronomy and which can be done as by-products with the ...
Olga K. Sil’chenko   +2 more
openaire   +1 more source

HyperLeda: Virtual Instruments for Extragalactic Astronomy

2006
HyperLeda offers a series of tools of interest for Galactic and extra-galactic astronomy. The most prominent service is the LEDA catalogue which presents 70 homogenized parameters collected for over 3 million galaxies.
Prugniel, Philippe   +4 more
openaire   +1 more source

Nebular and Extragalactic Astronomy from Space in the Optical Region

1980
This review deals with the impact that astronomical observations from outer space will have on the fields of nebular and extragalactic research. The discussion will be confined to the classical optical region of the electromagnetic spectrum extended to the adiacent UV and IR.
CAPACCIOLI, MASSIMO, Dodorico, S.
openaire   +2 more sources

The role of magnetic fields in extragalactic astronomy

Astrophysics and Space Science, 1981
The evidence is reviewed for a universal magnetic field of strength 10−9–10−8G; it has been extended to include the diffuse fields of galactic clusters and the extensive magnetic halos of spiral galaxies. Some likely effects of the universal fieldB 0 are as follows: (1) As suggested previously,B 0 is coupled to protogalaxies and evolves into magnetic ...
openaire   +1 more source

EXTRAGALACTIC X‐RAY ASTRONOMY WITH THE EINSTEIN OBSERVATORY

Annals of the New York Academy of Sciences, 1981
The flight of the Einstein X-ray Observatory has brought about a qualitative change in observational capabilities in the 0.2-3.0 keV energy range, with a several hundred-fold increase in sensitivity over previous instruments that allows the detection and study of X-rays from objects as distant as quasars, at redshifts greater than 3.0.
openaire   +1 more source

Recent Results in Astronomy I: Extragalactic

1989
One of the main aims of the extragalactic radioastronomy is to understand the physical phenomenon ”radiosource”, produced by high energy processes which take place mainly in the centres of galaxies and quasars. Typical radio structures of powerful radiosources lead to the acceptance of the idea of ordered collimated outflowing of matter from nuclei to ...
openaire   +1 more source

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