Results 261 to 270 of about 296,849 (299)

Skylab ultraviolet stellar astronomy experiment S019

Applied Optics, 1977
An objective-prism stellar spectrograph of 15-cm aperture was flown on all three Skylab missions. The wavelength region from 1300 A to 5000 A was covered by a special optical system containing a combination of reflecting telescope optics, a CaF(2) objective prism, and an achromatized field corrector lens system of CaF(2) and LiF.
F G, O'Callaghan, K G, Henize, J D, Wray
openaire   +2 more sources

Stellar X-ray astronomy

Advances in Space Research, 1990
Abstract The properties of the X-ray emission from normal stars, i.e., single stars located on the main-sequence or giant branch, are reviewed. Theoretical attempts to explain the observed X-ray emission both from early as well as late type stars are presented and, in particular, coronal length scale determination from spatially unresolved data is ...
openaire   +1 more source

Far-infrared stellar astronomy

Symposium - International Astronomical Union, 1966
The photometer with which I am presently observing stellar radiation responds in the wavelength band extending from 8 to 14 microns. I believe common usage places the boundary between the intermediate and far infrared at 10 microns. From the title of this paper one may therefore infer that what I say today is at least one-third wrong from the start.
openaire   +1 more source

Stellar Evolution and the Beginning of Galactic Astronomy

1995
In the previous chapter we saw how astrophysics grew from the need to understand how stars are constructed and how we can use astrophysics to deduce the internal conditions of stars from their visible properties—including their mass, their size, and their luminosity (their surface temperature, or color in conjunction with their size) by applying the ...
Lloyd Motz, Jefferson Hane Weaver
openaire   +1 more source

Astronomy is stellar field for younger women

Physics World, 2003
Photographs of theoretical physicists are usually few and far between in Britain's tabloid newspapers, but that was not the case last month when Stephen Hawking was pictured enjoying the company of lapdancers at Stringfellows night club in london. Hawking was on a night out with his assistant Mark and two nurses, and delighted Peter Stringfellow when ...
openaire   +1 more source

THE BEGINNINGS OF STELLAR X-RAY ASTRONOMY

Exploring the Universe, 2000
I review the beginnings of the field of stellar X-ray astronomy , concentrating on the period immediately preceeding , and immediately following , the launch of the Einstein Observatory. The wealth of data was such that , within the first two years following launch, major discoveries were made by scientists from both the Einstein Observatory PI groups ...
openaire   +1 more source

Stellar X-ray Astronomy with ROSAT

1988
We discuss the possibilities of stellar X-ray astronomy using the the next generation of X-ray telescopes onboard ROSAT. ROSAT will perform both an all sky survey at X-ray and XUV wavelengths exceeding the sensitivity of previous all sky surveys by orders of magnitude as well as pointed observations of specific targets.
openaire   +1 more source

Astrophysics and Stellar Astronomy

American Journal of Physics, 1971
Thomas L. Swihart, Peter D. Noerdlinger
openaire   +1 more source

Astrophysics and Stellar Astronomy

American Journal of Physics, 1970
Thomas L. Swthart, F. R. Zabriskie
openaire   +1 more source

Stellar Astronomy

Journal for the History of Astronomy, 1986
openaire   +1 more source