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PAHs and star formation in ELAIS N1 as seen by AKARI

Published online by Cambridge University Press:  04 June 2020

Tímea Kovács Open the ORCID record for Tímea Kovács [Opens in a new window] ,
Denis Burgarella ,
Hidehiro Kaneda ,
Cs. Molnár Dániel ,
Shinki Oyabu ,
Sandor Pinter Open the ORCID record for Sandor Pinter [Opens in a new window]  and
L. Viktor Toth Open the ORCID record for L. Viktor Toth [Opens in a new window]
Tímea Kovács
Affiliation:
Department of Astronomy of the Eötvös Loránd University, Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary
Denis Burgarella
Affiliation:
Aix-Marseille Université, CNRS, LAM (Laboratoire d’Astrophysique de Marseille), UMR 7326, 13388 Marseille, France
Hidehiro Kaneda
Affiliation:
Graduate School of Science, Nagoya University, Japan
Cs. Molnár Dániel
Affiliation:
INAF - Osservatorio Astronomico di Cagliari, Via della Scienza 5, I-09047 Selargius (CA), Italy
Shinki Oyabu
Affiliation:
Graduate School of Science, Nagoya University, Japan
Sandor Pinter
Affiliation:
Department of Astronomy of the Eötvös Loránd University, Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary
L. Viktor Toth
Affiliation:
Department of Astronomy of the Eötvös Loránd University, Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary Konkoly Observatory of the Hungarian Academy of Sciences, Konkoly Thege Miklós út 15-17., H-1121 Budapest, Hungary
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Abstract

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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.

Keywords

galaxies: ISMgalaxies: star formationinfrared: galaxies
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 15 , Symposium S352: Uncovering Early Galaxy Evolution in the ALMA and JWST Era , June 2019 , pp. 241 - 242
Copyright
© International Astronomical Union 2020

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