J/ApJ/906/73 Total/polarized extinction/emission PostPlanck Era (Hensley+, 2021)
Observational Constraints on the Physical Properties of Interstellar Dust in the
Post-Planck Era.
Hensley B.S., Draine B.T.
<Astrophys. J., 906, 73 (2021)>
=2021ApJ...906...73H 2021ApJ...906...73H
ADC_Keywords: Interstellar medium; Extinction; X-ray sources;
Photometry, millimetric/submm; Photometry, infrared;
Photometry, ultraviolet; Optical
Keywords: Dust continuum emission ; Interstellar dust ; Interstellar dust
extinction ; Starlight polarization ; Polycyclic aromatic
hydrocarbons ; Silicate grains ; Interstellar scattering
Abstract:
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.
Description:
Extinction. From 0.55 to 2.2µm, we employ the extinction curve of
Schlafly+, 2016ApJ...821...78S 2016ApJ...821...78S assuming AH/AK=1.55. From 2.2 to
37µm, we adopt the MIR extinction curve derived by Hensley &
Draine, 2020, J/ApJ/895/38 on the sight line toward Cyg OB2-12.
Polarized extinction. Between 0.12 and 4µm, we join a Serkowski law
with parameters K=0.87 and λmax=0.55µm smoothly to a power
law with index β=1.6 in the IR.
Emission. In the MIR, we adopt the AKARI and Spitzer spectrum of a
sample of PAH-bright galaxies (Lai+, 2020ApJ...905...55L 2020ApJ...905...55L) between 3
and 12µm and the Spitzer IRS observations of the translucent cloud
DCld 300.2-16.9 between 6 and 38µm.In the FIR, we adopt the
HI-correlated dust emission measured in the DIRBE and Planck bands
with ν≥353GHz, and the 353GHz-correlated emission measured in the
lower frequency Planck and WMAP bands by Planck Collaboration Int.
XXII (2015A&A...576A.107P 2015A&A...576A.107P).
Polarized emission. We adopt the frequency dependence of the polarized
infrared emission determined by Planck Collaboration XI
(2020A&A...641A..11P 2020A&A...641A..11P) scaled to match the relation between polarized
extinction and emission derived by Planck Collaboration XII
(2020A&A...641A..12P 2020A&A...641A..12P).
File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
ext.dat 23 10000 Adopted constraints on total extinction as a
function of wavelength
extpol.dat 23 1000 Adopted constraints on polarized extinction as a
function of wavelength
ipol.dat 23 100 Adopted constraints on polarized emission from
interstellar dust
irem.dat 23 1000 Adopted constraints on total emission from
interstellar dust
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See also:
VIII/76 : Leiden/Argentine/Bonn (LAB) Survey of Galactic HI (Kalberla+ 2005)
J/A+A/400/903 : The ISOGAL field FC-01863+00035 (Jiang+, 2003)
J/A+A/433/185 : Detailed abundance analysis of 102 F & Gdwarfs (Bensby+, 2005)
J/A+A/446/551 : Extinctions at 7um & 15um from ISOGAL survey (Jiang+, 2006)
J/ApJ/707/89 : Variation of mid-IR extinction (Gao+, 2009)
J/ApJ/705/32 : Diffuse interstellar bands from HD 183143 (Hobbs+, 2009)
J/ApJ/700/1299 : Gas-phase element depletions in the ISM (Jenkins, 2009)
J/A+A/511/A18 : NIR observations of stars near SgrA* (Schoedel+, 2010)
J/ApJ/737/73 : Infrared extinction toward the Galactic Centre (Fritz+, 2011)
J/A+A/534/A118 : Predicted dust emissivity 100-10000um bands (Paradis+, 2011)
J/A+A/539/A143 : Nearby Bstars stellar parameters and abundances (Nieva+, 2012)
J/ApJS/208/20 : Nine-year WMAP point source catalogs (Bennett+, 2013)
J/ApJS/212/18 : An atlas of UV-to-MIR galaxy SEDs (Brown+, 2014)
J/A+A/565/A103 : Anomalous microwave emission Galactic clouds (Planck+, 2014)
J/AJ/148/24 : Extinction maps in the bulge from APOGEE (Schultheis+, 2014)
J/A+A/594/A116 : HI4PI spectra and column density maps (HI4PI team+, 2016)
J/A+A/597/A130 : HI and 250um images of the Virgo cirrus (Bianchi+, 2017)
J/MNRAS/469/4933 : Extended red emission in IC59 and IC63 (Lai+, 2017)
J/ApJ/865/68 : Abundances for 79 Sun-like stars within 100pc (Bedell+, 2018)
J/ApJ/878/151 : DIB Measurements in 25 atlas sightlines (Fan+, 2019)
J/A+A/624/L8 : Starlight polarization (Panopoulou+, 2019)
J/A+A/630/A143 : Magnesium & silicon K-edges cross sections (Rogantini+, 2019)
J/ApJ/895/38 : MIR extinction toward Cyg OB2-12 ISM (Hensley+, 2020)
Byte-by-byte Description of file: ext.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 E11.5 um lambda [0.09/10000] Wavelength
13- 23 E11.5 cm2 tau [1.97e-28/2.18e-21] Optical depth per hydrogen atom
(cm2/H)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: extpol.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 E11.5 um lambda [0.12/4] Wavelength
13- 23 E11.5 cm2 pmax [1.28e-24/1.48e-23] Max polarization per hydrogen
atom (cm2/H)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: ipol.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 E11.5 um lambda [849/6799] Wavelength
13- 23 E11.5 erg/s/sr Pmax [4.06e-32/2.52e-28] Maximum polarized emission
per hydrogen atom (erg/s/sr/H)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: irem.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 E11.5 um lambda [3/13035] Wavelength
13- 23 E11.5 erg/s/sr I [3.97e-31/2.37e-25] Total emission per hydrogen
atom (erg/s/sr/H)
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 17-May-2022