Showing papers on "Planetary system published in 1971"
TL;DR: In this paper, the transit of a star by a dark companion or planet results in a characteristic colorimetric "signature" which should be detectable by photometric means, which is due to differential limb darkening in red and blue light.
101 citations
TL;DR: In this article, a hypothesis is put forward that, in the secondary component of ǫ Aurigae, we witness at present, an evolutionary process that may result in the formation of a planetary system very much more massive than our own in the astronomically near future.
Abstract: Recent observations of the eclipsing system of ɛ Aurigae converge to a conclusion that its secondary (‘invisible’) component constitutes a flat disc, some 40 AU across, which is semitransparent, of constant optical depth, and dims light non-selecting without a trace of polarization. Its constituent particles must, therefore, be large in comparison with the wavelength of observation — probably greater, on the average, than 10 μ; with no upper limit imposed by the observations. The mass of this disc appears to be no less than 20 ⊙; and its mean temperature, approximately 500K. The primary component of ɛ Aurigae is an F2 Ia supergiant, probably less than one million years old; while its less massive (and, consequently, less evolved) companion has not yet reached a stellar stage. The external characteristics of this disc-like companion appear to approximate the properties that have frequently been postulated as pre-requisites for the formation of a ‘planetary system’. A hypothesis is put forward that, in the secondary component of ɛ Aurigae, we witness at present, an evolutionary process that may result in the formation of a planetary system very much more massive than our own in the astronomically near future.
28 citations
13 citations
TL;DR: In this article, it is now generally accepted that a plausible theory of the origin of the solar system must be consistent with a high frequency of planetary systems in the universe, and it is also accepted that the Copernican theory is consistent with the existence of planetary companions.
Abstract: Earliest myths and legends reveal that man has long speculated on the origin of the earth but with the acceptance of the Copernican theory that speculation is now concerned with the origin of the solar system Recent observations of the proper motions of some nearby stars indicate that they probably have planetary companions and it is now generally accepted that a plausible theory of the origin of the solar system must be consistent with a high frequency of planetary systems in the universe
5 citations
TL;DR: The mass distribution of planets has been obtained on the basis of accretional theory of their formation recently developed by the author as mentioned in this paper, and the results agree fairly well with the observations.
Abstract: The mass distribution of planets has been obtained on the basis of accretional theory of their formation recently developed by the author. The results agree fairly well with the observations.
4 citations
1 citations