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Dust in dwarf galaxies: The case of NGC 4214

2011; Cambridge University Press; Volume: 7; Issue: S284 Linguagem: Inglês

10.1017/s1743921312008952

1743-9221

U. Lisenfeld, I. Hermelo, M. Relaño, R. Tuffs, C. C. Popescu, J. Fischera, Brent Groves,

Stellar, planetary, and galactic studies

Abstract We have carried out a detailed modelling of the dust heating and emission in the nearby, starbursting dwarf galaxy NGC 4214. Due to its proximity and the great wealth of data from the UV to the millimeter range (from GALEX, HST, Spitzer , Herschel, Planck and IRAM) it is possible to separately model the emission from HII regions and their associated photodissociation regions (PDRs) and the emission from diffuse dust. Furthermore, most model parameters can be directly determined from the data leaving very few free parameters. We can fit both the emission from HII+PDR regions and the diffuse emission in NGC 4214 with these models with “normal” dust properties and realistic parameters.