scholarly journals Astronomy: Supernovae and the distance scale

Nature ◽  
1985 ◽  
Vol 314 (6009) ◽  
pp. 320-320
Author(s):  
Sidney van den Bergh
Keyword(s):  
Distance Scale

Voyager UVS observations of stellar occultations by the rings of Saturn

1984 ◽  
Vol 75 ◽  
pp. 265-277
Author(s):  
J.B. Holbelg ◽  
W.T. Forrester
Keyword(s):  
Optical Depth ◽  
Distance Scale ◽  
Density Waves ◽  
Ring Density ◽  
Stellar Occultations ◽  
Saturn’S Rings ◽  
Saturn's Rings

ABSTRACTDuring the Voyager 1 and 2 Saturn encounters the ultraviolet spectrometers observed three separate stellar occultations by Saturn's rings. Together these three observations, which sampled the optical depth of the rings at resolutions from 3 to 6 km. can be used to establish a highly accurate distance scale allowing the identification of numerous ring features associated with resonances due to exterior satellites. Three separate observations of an eccentric ringlet near the location of the Titan apsidal resonance are discussed along with other ringlet-resonance associations occurring in the C ring. Density waves occurring in the A and B rings are reviewed and a detailed discussion of the analysis of one of these features is presented.

Social Distance Scale

1987 ◽  
Author(s):  
Bruce G. Link ◽  
Francis T. Cullen ◽  
James Frank ◽  
John F. Wozniak
Keyword(s):  
Social Distance ◽  
Distance Scale ◽  
Social Distance Scale

Stigma and Social Distance Scale

2020 ◽  
Author(s):  
Shubao Chen ◽  
Yuejiao Ma ◽  
Weifu Cai ◽  
Tania Moretta ◽  
Xuyi Wang ◽  
...  
Keyword(s):  
Social Distance ◽  
Distance Scale ◽  
Social Distance Scale

The Extragalactic Distance Scale Key Project. XVIII. The Discovery of Cepheids and a New Distance to NGC 4535 Using theHubble Space Telescope

1999 ◽  
Vol 521 (1) ◽  
pp. 155-178 ◽  
Author(s):  
L. M. Macri ◽  
J. P. Huchra ◽  
P. B. Stetson ◽  
N. A. Silbermann ◽  
W. L. Freedman ◽  
...  
Keyword(s):  
Distance Scale ◽  
Space Telescope ◽  
Extragalactic Distance Scale

scholarly journals The Hipparcos results

1997 ◽  
Vol 189 ◽  
pp. 9-18 ◽  
Author(s):  
C. Turon
Keyword(s):  
Systematic Error ◽  
Absolute Magnitude ◽  
Distance Scale ◽  
Apparent Magnitude ◽  
Accurate Data ◽  
Hipparcos Catalogue ◽  
Ecliptic Latitude ◽  
Better Than

After a brief presentation of the Hipparcos mission, and an overview of the astrometric and photometric results obtained from the main mission and from Tycho, more details are given on the parallaxes. Absolute parallaxes have been obtained for 117 955 entries of the Hipparcos Catalogue, out of a total of 118 218, with a median precision of 0.97 mas for stars brighter than 9. This precision varies with apparent magnitude and ecliptic latitude. The estimated systematic error is smaller than 0.1 mas. The distances of more than 20 000 stars are determined to better than 10 %. Some more statistics are presented.A few applications of this fantastic amount of new and accurate data are presented, in the fields of absolute magnitude calibrations, stellar physics, distance scale determination.

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