PAHs and star formation in ELAIS N1 as seen by AKARI. Issue Volume 15:Issue S352(2019) (June 2019)

• Record Type: Journal Article
• Authors: Kovács, Tímea; Burgarella, Denis; Kaneda, Hidehiro; Dániel, Cs. Molnár; Oyabu, Shinki; Pinter, Sandor; Viktor Toth, L.
• Editors: da Cunha, Elisabete; Hodge, Jacqueline; Afonso, José; Pentericci, Laura; Sobral, David
• Is Part Of: Proceedings of the International Astronomical Union. Volume 15:Issue S352(2019)
• Page Start: 241
• Page End: 242
• Publication Date: 2019-06
• Subjects: galaxies: ISM, -- galaxies: star formation, -- infrared: galaxies; Astronomy -- Congresses; Astronomy -- Periodicals; 520
• DOI: 10.1017/S1743921319009128
• Languages: English
• ISSNs: 1743-9213

Abstract

Abstract: We have examined the relationship between star formation and polycyclic aromatic hydrocarbons (PAHs) by fitting the spectral energy distributions (SED) of AKARI selected galaxies. PAHs are excited by the ultraviolet (UV) photons of young stars and can trace star formation in galaxies, but they are disassociated by the strong UV radiation in starbursts. AKARI covered the mid-infrared, where the PAHs emit their radiation, with a high density of photometric bands. These observations allow us to estimate the star formation rate and the PAH mass fraction of the dust in galaxies. In the future the James Webb Space Telescope (JWST) will also make measurements in this wavelength range. This research can therefore be considered as a pathfinder to similar studies that will come later from JWST observations.