1999/08/20 by Н. В. Вощинников, N. V. Voshchinnikov, Voshchinnikov, N. V. +5
Biochemistry, Genetics and Molecular Biology · Physics and Astronomy · #Astro and Planetary Science #Astrophysics (astro-ph) #Astrophysics and Star Formation Studies #FOS: Physical sciences #Magnetic and Electromagnetic Effects #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9908235
4 pages, 2 Postscript figures; accepted for publication in Astronomy & Astrophysics Letters
arxiv created 1999/08/20 · openalex publication_date 1999/08/20 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A model of spheroidal particles is used to calculate the steady-state temperature of dust grains immersed in the interstellar radiation field. It is found that the temperature of non-spherical grains with the aspect ratios a/b <= 2 deviates from that of spheres less than 10%. More elongated or flattened particles are usually cooler than spheres of the same mass and in some cases the temperatures may differ by even about a factor of 2. The shape effects increase with the infrared absorptivity of the grain material and seem to be more important in dark interstellar clouds.