TY - JOUR
T1 - Observational constraints on the physical properties of interstellar dust in the post-planck era
AU - Hensley, Brandon S.
AU - Draine, B. T.
N1 - Funding Information:
We are grateful to many stimulating conversations that informed this work over its long completion. We thank in particular Megan Bedell, Simone Bianchi, Tuhin Ghosh, Vincent Guillet, Ed Jenkins, Eddie Schlafly, Adolf Witt, and Chris Wright for sharing their expertise. We thank Jim Ingalls for providing the Spitzer IRS spectrum of DCld 300.2-16.9, and Thomas Lai and JD Smith for providing their “1C” PAH spectrum in advance of publication. We thank the anonymous referee for helpful comments. This research was carried out in part at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration. This work was supported in part by NSF grants AST-1408723 and AST-1908123. B.H. acknowledges support from the National Science Foundation Graduate Research Fellowship under grant No. DGE-0646086 during the earliest stages of this work.
Publisher Copyright:
© 2021. The American Astronomical Society. All rights reserved.
PY - 2021/1/10
Y1 - 2021/1/10
N2 - We present a synthesis of the astronomical observations constraining the wavelength-dependent extinction, emission, and polarization from interstellar dust from UV to microwave wavelengths on diffuse Galactic sight lines. Representative solid-phase abundances for those sight lines are also derived. Given the sensitive new observations of polarized dust emission provided by the Planck satellite, we place particular emphasis on dust polarimetry, including continuum polarized extinction, polarization in the carbonaceous and silicate spectroscopic features, the wavelength-dependent polarization fraction of the dust emission, and the connection between optical polarized extinction and far-infrared polarized emission. Together, these constitute a set of constraints that should be reproduced by models of dust in the diffuse interstellar medium.
AB - We present a synthesis of the astronomical observations constraining the wavelength-dependent extinction, emission, and polarization from interstellar dust from UV to microwave wavelengths on diffuse Galactic sight lines. Representative solid-phase abundances for those sight lines are also derived. Given the sensitive new observations of polarized dust emission provided by the Planck satellite, we place particular emphasis on dust polarimetry, including continuum polarized extinction, polarization in the carbonaceous and silicate spectroscopic features, the wavelength-dependent polarization fraction of the dust emission, and the connection between optical polarized extinction and far-infrared polarized emission. Together, these constitute a set of constraints that should be reproduced by models of dust in the diffuse interstellar medium.
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U2 - 10.3847/1538-4357/abc8f1
DO - 10.3847/1538-4357/abc8f1
M3 - Article
AN - SCOPUS:85100102130
SN - 0004-637X
VL - 906
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 2
M1 - 73
ER -