2010/01/10 by H. K. Das, Н. В. Вощинников, N. V. Voshchinnikov +2 · 1 citation
Physics and Astronomy · #Astro and Planetary Science #Astronomy #Astrophysics #Astrophysics and Star Formation Studies #Cosmic dust #Extinction (optical mineralogy) #Galaxy #Interstellar cloud #Interstellar medium #Lambda #Line-of-sight #Magnetic field #Molecular cloud #Optics #Physics #Polarization (electrochemistry) #Quantum mechanics #Stars #Stellar, planetary, and galactic studies #Wavelength #astro-ph.GA
paper · pdf · doi:10.1111/j.1365-2966.2010.16281.x
11 pages, 4 figures and 4 tables, To appear in MNRAS (added)
arxiv created 2010/01/10 · openalex publication_date 2010/02/01 · arxiv updated 2015/05/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We extend and investigate the spheroidal model of interstellar dust grains used to simultaneously interpret the observed interstellar extinction and polarization curves. We compare our model with similar models recently suggested by other authors, study its properties and apply it to fit the normalized extinction A(λ)/AV and the polarizing efficiency P(λ)/A(λ) measured in the near-infrared to far-ultraviolet region for several stars seen through one large cloud. We conclude that the model parameter Ω being the angle between the line of sight and the magnetic field direction can be more or less reliably determined from comparison of the theory and observations. This opens a way to study the spatial structure of interstellar magnetic fields by using multiwavelength photometric and polarimetric observations.