A common column density threshold for scattering at 3.6μm and water-ice in molecular clouds

2014/07/22 by M. Andersen, Morten Andersen, W-F. Thi +5
Earth and Planetary Sciences · Physics and Astronomy · #Astrophysics #Astrophysics and Star Formation Studies #Atmospheric Ozone and Climate #Context (archaeology) #Geology #Materials science #Molecular cloud #Molecular physics #Optics #Physics #Scattering #Stars #Stellar, planetary, and galactic studies #astro-ph.GA

paper · pdf · doi:10.1051/0004-6361/201424011

published as A&A 568, L3 (2014) · Accepted in A&A Letters

arxiv created 2014/07/22 · openalex publication_date 2014/07/22 · arxiv updated 2014/09/05 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Context. Observations of scattered light in the 1−5 μm range have revealed dust grains in molecular cores with sizes larger than commonly inferred for the diffuse interstellar medium. It is currently unclear whether these grains are grown within the molecular cores or are an ubiquitous component of the interstellar medium.

Citations

• The size distribution of interstellar grains
• Scattering from dust in molecular clouds: Constraining the dust grain size distribution through near-infrared cloudshine and infrared coreshine