Star formation law in the EoR from [CII] and CIII] lines. (arXiv:2003.06443v1 [astro-ph.GA])

Star formation law in the EoR from [CII] and CIII] lines. (arXiv:2003.06443v1 [astro-ph.GA])
<a href="http://arxiv.org/find/astro-ph/1/au:+Vallini_L/0/1/0/all/0/1">L. Vallini</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Ferrara_A/0/1/0/all/0/1">A. Ferrara</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Pallottini_A/0/1/0/all/0/1">A. Pallottini</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Carniani_S/0/1/0/all/0/1">S. Carniani</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Gallerani_S/0/1/0/all/0/1">S. Gallerani</a>

We present a novel method to simultaneously characterise the star formation
law and the interstellar medium properties of galaxies in the Epoch of
Reionization (EoR) through the combination of [CII] 158$mu$m (and its known
relation with star formation rate) and CIII]$lambda$1909{AA} emission line
data. The method, based on a Markov Chain Monte Carlo algorithm, allows to
determine the target galaxy average density, $n$, gas metallicity, $Z$, and
burstiness parameter, $kappa_s$, quantifying deviations from the
Kennicutt-Schmidt relation. As an application, we consider COS-3018 (z=6.854),
the only EoR Lyman Break Galaxy so far detected in both [CII] and CIII]. We
show that COS-3018 is a moderate starburst ($kappa_s approx 3$), with
$Zapprox 0.4, Z_{odot}$, and $n approx 500, {rm cm^{-3}}$. Our method
will be optimally applied to joint ALMA and JWST targets.

We present a novel method to simultaneously characterise the star formation
law and the interstellar medium properties of galaxies in the Epoch of
Reionization (EoR) through the combination of [CII] 158$mu$m (and its known
relation with star formation rate) and CIII]$lambda$1909{AA} emission line
data. The method, based on a Markov Chain Monte Carlo algorithm, allows to
determine the target galaxy average density, $n$, gas metallicity, $Z$, and
burstiness parameter, $kappa_s$, quantifying deviations from the
Kennicutt-Schmidt relation. As an application, we consider COS-3018 (z=6.854),
the only EoR Lyman Break Galaxy so far detected in both [CII] and CIII]. We
show that COS-3018 is a moderate starburst ($kappa_s approx 3$), with
$Zapprox 0.4, Z_{odot}$, and $n approx 500, {rm cm^{-3}}$. Our method
will be optimally applied to joint ALMA and JWST targets.

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