Bibcode
Ejlali, G.; Adam, R.; Ade, P.; Ajeddig, H.; André, P.; Artis, E.; Aussel, H.; Beelen, A.; Benoît, A.; Berta, S.; Bing, L.; Bourrion, O.; Calvo, M.; Catalano, A.; de Looze, I.; De Petris, M.; Désert, F. -X.; Doyle, S.; Driessen, E. F. C.; Galametz, M.; Galliano, F.; Gomez, A.; Goupy, J.; Jones, A. P.; Hughes, A.; Katsioli, S.; Kéruzoré, F.; Kramer, C.; Ladjelate, B.; Lagache, G.; Leclercq, S.; Lestrade, J. -F.; Macías-Pérez, J. -F.; Madden, S. C.; Maury, A.; Mauskopf, P.; Mayet, F.; Monfardini, A.; Muñoz-Echeverría, M.; Nersesian, A.; Perotto, L.; Pisano, G.; Ponthieu, N.; Revéret, V.; Rigby, A. J.; Ritacco, A.; Romero, C.; Roussel, H.; Ruppin, F.; Schuster, K.; Shu, S.; Sievers, A.; Smith, M. W. S. L.; Tabatabaei, F. S.; Tucker, C.; Xilouris, E. M.; Zylka, R.
Referencia bibliográfica
European Physical Journal Web of Conferences
Fecha de publicación:
7
2022
Número de citas
1
Número de citas referidas
1
Descripción
Interstellar dust plays an important role in the formation of molecular gas and the heating and cooling of the interstellar medium. The spatial distribution of the mm-wavelength dust emission from galaxies is largely unexplored. The NIKA2 Guaranteed Time Project IMEGIN (Interpreting the Millimeter Emission of Galaxies with IRAM and NIKA2) has recently mapped the mm emission in the grand design spiral galaxy NGC6946. By subtracting the contributions from the free-free, synchrotron, and CO line emission, we map the distribution of the pure dust emission at 1:15mm and 2mm. Separating the arm/interarm regions, we find a dominant 2mm emission from interarms indicating the significant role of the general interstellar radiation field in heating the cold dust. Finally, we present maps of the dust mass, temperature, and emissivity index using the Bayesian MCMC modeling of the spectral energy distribution in NGC6946.