Volume 564, April 2014
|Number of page(s)||11|
|Published online||28 March 2014|
Modelling galaxy spectra at redshifts 0.2 ≤z ≤ 2.3 by the [OII]/Hβ and [OIII]/Hβ line ratios
1 Dipartimento di Fisica e AstronomiaUniversity of Padova, Vicolo dell’Osservatorio 2, 35122 Padova, Italy
2 School of Physics and Astronomy, Tel-Aviv University, 69978 Tel-Aviv, Israel
Received: 21 October 2013
Accepted: 10 February 2014
We present the detailed modelling of line spectra emitted from galaxies at redshifts 0.2≤ z ≤ 2.3. The spectra only account for a few oxygen to Hβ line ratios. The results show that [OII]3727+3729/Hβ and [OIII]5007+4959/Hβ are not sufficient to constrain the models. The data at least of an auroral line, e.g. [OIII]4363, should be known. We have found O/H relative abundances ranging between 1.8 ×10-4 and 6.6 × 10-4 by modelling the spectra observed from ultrastrong emission line galaxy and faint galaxy samples.
Key words: galaxies: evolution / shock waves / galaxies: active / galaxies: high-redshift / galaxies: abundances / galaxies: starburst
© ESO, 2014
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