SIMBAD references

2012A&A...541A..52V - Astronomy and Astrophysics, volume 541A, 52-52 (2012/5-1)

Interstellar polarization and grain alignment: the role of iron and silicon.


Abstract (from CDS):

We compiled the polarimetric data for a sample of lines of sight with known abundances of Mg, Si, and Fe. We correlated the degree of interstellar polarization P and polarization efficiency (the ratio of P to the colour excess E(B-V) or extinction AV) with dust phase abundances. We detect an anticorrelation between P and the dust phase abundance of iron in non silicate-containing grains [Fe(rest)/H ]d, a correlation between P and the abundance of Si, and no correlation between P/E(B-V) or P/AV and dust phase abundances. These findings can be explained if mainly the silicate grains aligned by the radiative mechanism are responsible for the observed interstellar linear polarization.

Abstract Copyright:

Journal keyword(s): dust, extinction - ISM: abundances - polarization

VizieR on-line data: <Available at CDS (J/A+A/541/A52): table1.dat>

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

Simbad objects: 197

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