SIMBAD references

2019MNRAS.483..299G - Mon. Not. R. Astron. Soc., 483, 299-314 (2019/February-2)

Interstellar polarization and extinction in the Local Bubble and the Gould Belt.


Abstract (from CDS):

We analyse an all-sky compilation of 13 data sources with optical interstellar linear polarization for 3871 Gaia DR2 and Hipparcos stars within 500 pc, which do not exhibit a considerable intrinsic polarization. These data are analysed together with five 3D maps and models of the reddening E(B - V). We consider variations of the polarization degree P, position angle θ, and polarization efficiency P/E(B - V) with Galactic coordinates, distance R, and dereddened colour. P shows a maximum at the Gould Belt mid-plane. P/R drops in the Local Bubble by several times defining a boundary of the Bubble at P = 0.1 per cent. All the data sources of the reddening, except Lallement et al., show a drop of P/E(B - V) in the Bubble. A significant number of stars with a too high P/E(B - V), where the reddening is taken from Arenou et al., Drimmel et al. or Lallement et al., either reject the Serkowski's limit P/E(B - V) < 9.3 per cent per mag or manifest a systematic underestimation of the reddening by these data sources. The spatial- and colour-dependent variations of P and E(B - V) outside the Bubble compensate each other, resulting in a nearly constant P/E(B - V). A giant envelope of aligned dust dominates at middle and high latitudes outside the Bubble. The Markkanen's cloud, the North Polar Spur, and some other filaments are parts of this envelope.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): polarization - ISM: bubbles - dust, extinction - ISM: magnetic fields - ISM: structure - solar neighbourhood

VizieR on-line data: <Available at CDS (J/MNRAS/483/299): table1.dat table2.dat table3.dat table6.dat>

Simbad objects: 5426

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