Details

Autor(en) / Beteiligte

• Arendt, Richard G.
• Staguhn, Johannes G.
• Dwek, Eliahu
• Morris, Mark R.
• Yusef-Zadeh, Farhad
• Benford, Dominic J.
• Kovacs, Attila
• Gonzalez-Quiles, Junellie

Titel

2 mm GISMO Observations of the Galactic Center. I. Dust Emission

Ist Teil von

• The Astrophysical journal, 2019-11, Vol.885 (1)

Ort / Verlag

Goddard Space Flight Center: The Astrophysical Journal

Erscheinungsjahr

2019

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• The central molecular zone, covering the inner 1° of the Galactic plane has been mapped at 2mm 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 single-temperature fit can describe the 160-500 um emission for most lines of sight, if the long-wavelength dust emissivity scales as with 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.