Thermal Emission of Interplanetary Dust Cloud Models.

Inferring Sources in the Interplanetary Dust Cloud, from Observations and Simulations of Zodiacal Light and Thermal Emission

Interplanetary dust particles physical properties may be approached through observations of the solar light they scatter, specially its polarization, and of their thermal emission. Results, at least near the ecliptic plane, on polarization phase curves and on the heliocentric dependence of the local spatial density, albedo, polarization and temperature are summarized. As far as interpretations ...

South–North and Radial Traverses through the Interplanetary Dust Cloud

IRSI/Darwin: Peering Through the Interplanetary Dust Cloud

Introduction Since the mid-1990s the search for extra-solar, terrestrial planets (called ‘exo-planets’ hereafter for brevity), and the possibility of life on them has received much attention. Both ESA and NASA are studying space-based telescopes that will enable the scientific community to conduct such a search. The most promising technology that will allow the detection of exoplanets and the s...

Migration of interplanetary dust.

We numerically investigate the migration of dust particles with initial orbits close to those of the numbered asteroids, observed trans-Neptunian objects, and comet Encke. The fraction of silicate asteroidal particles that collided with the Earth during their lifetime varied from 11% for 100 micron particles to 0.008% for 1 micron particles. Almost all asteroidal particles with diameter d >/= 4...

Dust Emission from the Perseus Molecular Cloud

Using far-infrared emission maps taken by IRAS and Spitzer and a near-infrared extinction map derived from 2MASS data, we have made dust temperature and column density maps of the Perseus molecular cloud. We show that the emission from transiently heated very small grains (VSGs) and the big grain dust emissivity vary as a function of extinction and dust temperature, with higher dust emissivitie...