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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 693437.0, MPI für Astronomie / Publikationen_mpia
Cold dust in the giant barred galaxy NGC 1365
Authors:Tabatabaei, F. S.; Weiß, A.; Combes, F.; Henkel, C.; Menten, K. M.; Beck, R.; Kovács, A.; Güsten, R.
Date of Publication (YYYY-MM-DD):2013
Title of Journal:Astronomy and Astrophysics
Start Page:id. A128 (11 pp)
Audience:Not Specified
Abstract / Description:Constraining the physcial properties of dust requires observations at submm wavelengths. This will provide important insight into the gas content of galaxies. We mapped NGC 1365 at 870 μm with LABOCA, the Large APEX Bolometer Camera, allowing us to probe the central mass concentration as well as the rate at which the gas flows to the center. We obtained the dust physical properties both globally and locally for different locations in the galaxy. A 20 K modified black body represents about 98% of the total dust content of the galaxy, the rest can be represented by a warmer dust component of 40 K. The bar exhibits an east-west asymmetry in the dust distribution: The eastern bar is heavier than the western bar by more than a factor of 4. Integrating the dust spectral energy distribution, we derived a total infrared luminosity, LTIR, of 9.8 × 1010 L, leading to a dust-enshrouded star formation rate of SFRTIR ≃ 16.7 M yr-1 in NGC 1365. We derived the gas mass from the measurements of the dust emission, resulting in a
Free Keywords:galaxies: individual: NGC 1365; galaxies: ISM; submillimeter: ISM; galaxies: star formation
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
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