TY - JOUR
T1 - 2 mm GISMO Observations of the Galactic Center. I. Dust Emission
AU - Arendt, Richard G.
AU - Staguhn, Johannes
AU - Dwek, Eli
AU - Morris, Mark R.
AU - Yusef-Zadeh, Farhad
AU - Benford, Dominic J.
AU - Kovács, Attila
AU - Gonzalez-Quiles, Junellie
N1 - Publisher Copyright:
© 2019. The American Astronomical Society. All rights reserved..
PY - 2019/11/1
Y1 - 2019/11/1
N2 - The central molecular zone, covering the inner ∼1° of the Galactic plane has been mapped at 2 mm using the Goddard-IRAM Superconducting 2-Millimeter Observer (GISMO) bolometric camera on the 30 m IRAM telescope. The 21″ resolution maps show abundant emission from cold molecular clouds, from star-forming regions, and from one of the Galactic center nonthermal filaments. In this work we use the Herschel Hi-GAL data to model the dust emission across the Galactic center. We find that a singleerature fit can describe the 160-500 μm emission for most lines of sight, if the long-wavelength dust emissivity scales as λ -β with β ≈ 2.25. This dust model is extrapolated to predict the 2 mm dust emission. Subtraction of the model from the GISMO data provides a clearer look at the 2 mm emission of star-forming regions and the brightest nonthermal filament.
AB - The central molecular zone, covering the inner ∼1° of the Galactic plane has been mapped at 2 mm using the Goddard-IRAM Superconducting 2-Millimeter Observer (GISMO) bolometric camera on the 30 m IRAM telescope. The 21″ resolution maps show abundant emission from cold molecular clouds, from star-forming regions, and from one of the Galactic center nonthermal filaments. In this work we use the Herschel Hi-GAL data to model the dust emission across the Galactic center. We find that a singleerature fit can describe the 160-500 μm emission for most lines of sight, if the long-wavelength dust emissivity scales as λ -β with β ≈ 2.25. This dust model is extrapolated to predict the 2 mm dust emission. Subtraction of the model from the GISMO data provides a clearer look at the 2 mm emission of star-forming regions and the brightest nonthermal filament.
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U2 - 10.3847/1538-4357/ab451c
DO - 10.3847/1538-4357/ab451c
M3 - Article
AN - SCOPUS:85075129216
SN - 0004-637X
VL - 885
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 1
M1 - 71
ER -