English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We present the preliminary results of Monte Carlo simulations aimed toinvestigate the effects of realistic dust extinction (absorption + scattering)on the colours of high-z galaxies. In this paper, we concentrate on the case ofspheroidal galaxies, and we obtain attenuation curves in the range0.1-1.2$\mu$m for different dust spatial distributions, and for a range ofvalues of the dust optical depth, geometrical thickness and inclination of thedust disk. We find that the resultant curves are strongly dependent on the dustgeometrical distribution and optical depth. A serendipitous finding is that thestrength of the 2200 \AA absorption feature depends not only on the opticaldepth, but also on the dust geometrical distribution. As a first application,we test our results on two high-z galaxies with extremely red colours (HR10 andHR14) in order to infer clues on their ages, dust content and dust spatialdistribution. We confirm that HR10 must be a very dusty galaxy, and we suggestthat its stellar component should be strongly embedded in the dust in order toreproduce the observed extremely red colours.Comment: 7 pages, MNRAS LaTeX, 3 figure

On the dust extinction in high-z galaxies and the case of extremely red objects