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Galaxy Evolution through spectral fitting tools: A comparative study between STECKMAP and FADO

Published online by Cambridge University Press:  04 June 2020

Ciro Pappalardo Open the ORCID record for Ciro Pappalardo [Opens in a new window] ,
Polychronis Papaderos ,
Jean Michel Gomes ,
Leandro Cardoso ,
Ana Afonso ,
Israel Matute  and
Stergios Amarantidis
Ciro Pappalardo
Affiliation:
Instituto de Astrofísica e Ciências do Espaço, Portugal email: [email protected]
Polychronis Papaderos
Affiliation:
Instituto de Astrofísica e Ciências do Espaço, Portugal email: [email protected]
Jean Michel Gomes
Affiliation:
Instituto de Astrofísica e Ciências do Espaço, Portugal email: [email protected]
Leandro Cardoso
Affiliation:
Instituto de Astrofísica e Ciências do Espaço, Portugal email: [email protected]
Ana Afonso
Affiliation:
Instituto de Astrofísica e Ciências do Espaço, Portugal email: [email protected]
Israel Matute
Affiliation:
Instituto de Astrofísica e Ciências do Espaço, Portugal email: [email protected]
Stergios Amarantidis
Affiliation:
Instituto de Astrofísica e Ciências do Espaço, Portugal email: [email protected]
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Abstract

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Spectral analysis is nowadays a widely used tool to investigate the evolution of galaxies. Assessing the reliability of this approach is crucia, motivating a through analysis. In this poster, a comparative study between two widely tools, FADO and STECKMAP, is performed, focusing on the discrepancies between the different approaches. Both codes use different methods to extract the best fit, allowing the possibility to disentangle possible biases introduced in the analysis. Our analysis showed that where nebular emission is not negligible, the results obtained with methods taking into account such a component are more reliable, and this can be very important when moving at higher redshift, where stellar populations are younger. In particular, this is true for starburst systems, where a huge amount of stars are forming almost at the same epoch. This is an important aspect to take into account the future survey, as JWST for example, which will provide the community with medium resolution spectra of galaxies at redshift 3-4 and even higher.

Keywords

Spectral fitting toolsGalaxy EvolutionNebular emission
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. 119 - 120
Copyright
© International Astronomical Union 2020

References

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