Showing papers in "Icarus in 1963"

TL;DR: In this paper, the ferrous iron content of a silicate liquid at equilibrium with solar gas approximately equals the Fe 2+ content of chondrules in a primitive chondrite (Renazzo) and supports the proposition that chondrule are original (liquid) condensations from the primordial solar nebula, predating the planets.

TL;DR: In this article, it was shown that the isotropic loss of mass from a binary system is equivalent to a fore proportional to the rate of loss and velocity vector, in the direction of motion.

TL;DR: In this article, the brightness temperature of an element of a planetary disk is dependent both on the direction of linear polarization to which the observing antenna is sensitive and the inclination of the element to the line-of-sight.

TL;DR: In this paper, the authors showed that the existence of stable periodic orbits in the restricted three-body problem has been studied for several values of μ (μ is the mass of the minor component, 1-μ being the weight of the other) and that the least unstable ones are those for which all the eigenvalues are equal to unity.

TL;DR: In this article, the anomalous cooling of rayed craters during an eclipse by Shorthill, Borough, and Conley prompted a further investigation of differential temperatures on the lunar surface.

TL;DR: High dispersion spectrograms of jupiter are used to study the chemical compositions, pressures, temperatures and velocities in the atmospheres of the outer planets as discussed by the authors, where the chemical composition, pressures and temperatures of outer planets are analyzed.

TL;DR: The composition and structure of icy conglomerate comet nuclei formed by an accumulation process in the primordial solar nebula is examined in this paper, where a significant proportion of compounds stable only at low temperatures should occur also.

TL;DR: An anomalous increase in surface brightness of the Moon in an area of over 60,000 km2 around and north of the crater Kepler was observed to occur twice on the night of November 1 and 2, 1963, on eight photographs secured with the 24-inch refractor of the Observatoire du Pic-du-Midi between 22.35 and 22.42 U.T. as discussed by the authors.

TL;DR: In this paper, it was shown that if the Moon originally had a chondritic composition, the fusion curve of the lunar material should intersect the thermal gradients computed by G. F. MacDonald at the present time at 400 to 500 km depth, depending on the slope of the fusion curves.

TL;DR: In this paper, cold and aridity were considered as constraints on survival of terrestrial microorganisms in simulated martian environment. But they did not consider the effect of temperature on the survival of microorganisms.

TL;DR: The most abundant nuclides having half-lives longer than a few hours in a dust of chondritic composition are Co 56, Fe 55, Al 26, Mn 53, Co 55, C 14, Na 22, and Co 57.

TL;DR: Several possible lunar model atmospheres are computed; the gases considered include hydrogen, neon, nitrogen, argon, krypton, and xenon as mentioned in this paper, and the importance of various loss processes including thermal escape, scattering by the solar wind, and total loss of all ions is assessed.

TL;DR: A layer of unconsolidated material overlaying the rigid indurated material can conceal the apparent influence of the fracture pattern where this cover is thick relative to the crater depth as discussed by the authors.

TL;DR: In this paper, a modified form of the Darwin-Wise hypothesis is proposed, according to which the Moon is formed as a result of the Earth's rotational instability induced by formation of the iron core.

TL;DR: In this article, the 8.35 mm radio emission from Jupiter was observed and a disc temperature of 144 ± 23° was found, which corresponded closely to the temperature at the level of the visible cloud cover.

TL;DR: In this article, Schrutka, Baldwin, Brooks, and Davidson showed that the second solid harmonic is small and the "lunar bulge" can be accounted for almost entirely by the fourth harmonic.

TL;DR: In this paper, the relative ages of isochronous surfaces were derived from crater frequencies when account is taken of complications caused by secondary and, perhaps, igneous craters, and obliteration of old craters by younger ones.

TL;DR: In this article, the scale height derived on the assumption of an isothermal atmosphere should be multiplied by a factor of (1 + 32G), where G = ϖH/ϖz, to obtain the scaling height for the case of a linear gradient.

TL;DR: In this article, a formalism for solving the radiative transfer equation in the presence of imbedded heat sources is developed for demonstrating the equivalence of an internally heated model atmosphere to the well-known problem of diffuse reflection from an isotropically scattering atmosphere.

TL;DR: In this article, the effects of nonuniform expansion or contraction of elastic globes of planetary size and mass caused by the secular escape of their primodial heat and radiogenic heating were investigated.

TL;DR: The tropicale tropicale Nord de latitude +57°°, d'une´clat exceptionnel, re´ve´la plusieurs petites taches blanches, tre`s brillantes et persistantes.

TL;DR: In this article, the authors present a double image of the me´thode du microme trea`double image, which is the first image to be produced by the International Astronomical Organization (IAO).

TL;DR: For the general three-body problem, canonical coordinates were introduced recently, that regularize the binary collisions by means of a conformal mapping as discussed by the authors, and it is shown here how this regularization applies to the plane restricted three body problem.

TL;DR: In this article, the authors derived an upper limit for the integrated Martian water vapor abundance of approximately 3.5 × 10 −3 gm/cm 2 (35 μ) from a very high dispersion spectrogram of Mars.

TL;DR: The solar system bibliography covering earth atmospheric physics, cosmogony, planetary and interplanetary physics, solar physics and solar system dynamics can be found in this paper, where the authors provide a comprehensive overview of the solar system.

TL;DR: Tritium concentrations in lead, steel, and aluminum components of four polar-orbiting satellites flown in 1960 and 1961 have been measured as mentioned in this paper, and the tritium concentration can be used as an indicator of the depth of the solar-flare acceleration region.

TL;DR: In this article, the structure of a Na-coma of a comet is investigated and it is assumed to have a low optical thickness and a relatively high repulsive force originating from light pressure and the relatively high average life time of the atoms.

TL;DR: In this paper, the authors derived the average life-time of the typical head molecules until ionization above 10 6 sec for unit heliocentric distance which exceed n p = 10cm −3.

TL;DR: In this article, the radiative losses due to free-free transitions, free-bound transitions, and permitted and forbidden line emission have been evaluated for all ions which are present in significant amounts in the extended solar corona from 4R ⊙, to 215R δ.