[AAA] Fwd: Seminario Virtual Room DAS - UChile 11 Nov - PASSAGES: A Multi-J CO and [CI] line study of single dish observations of the lensed Planck selected starbursts at cosmic noon:: Dr. Kevin Harrington

[Rene A. Mendez]

Estimado/as,

Les recuerdo que el jueves 11 de Noviembre a las 12:15 hrs. tendremos 
seminario en el Departamento de Astronomía de la Universidad de Chile.
*
*
*Speaker*: Kevin Harrington
APEX and ALMA Fellow at ESO/Chile

*Title*: PASSAGES: A Multi-J CO and [CI] line study of single dish 
observations of the lensed Planck selected starbursts at cosmic noon

*Abstract*: The peak epoch of cosmic star formation also coincides with 
the peak in the cosmic co-moving molecular gas mass density, at z ~2. 
Even with sensitive interferometers, only strongly lensed galaxies offer 
the feasibility to efficiently and systematically detect multiple 
emission lines tracing the full CO ladder and both atomic carbon 
fine-structure lines for high-z galaxies. In the past few years, our 
team has delved into the Planck All-Sky Survey to Analyze 
Gravitationally-lensed Extreme Starbursts (PASSAGES) in order to conduct 
such systematic studies to better understand the most active 
star-forming galaxies in the early Universe. In this talk I will present 
the results of a state-of-the-art approach to model -- simultaneously -- 
both the detected emission lines and the dust SED. Using the largest 
assembly of ~200 CO/[CI] lines for any uniformly selected high-z sample, 
we have explicitly derived the infamous alpha conversion factors without 
assuming any excitation corrections or typically applied values. I will 
discuss the implications based on such spatially unresolved 
measurements, including a detailed perspective on the often-used dust 
continuum approach to deriving the molecular gas masses. I will also 
briefly present our current understanding of the [CI] line excitation 
conditions in the context of these detailed radiative transfer models.
More details can be found in the recently published Harrington et al. 
2021 (https://ui.adsabs.harvard.edu/abs/2021ApJ...908...95H/abstract --- 
the ApJ version is recommended; please see the supp tables/figs).

Virtual room: 
https://uchile.zoom.us/j/89046359858?pwd=dURFTjIzbXU0NkNpdGFZb0sxRVZJdz09

Rene A. Mendez
Seminar Coordinator
DAS/UChile - rmendez en uchile.cl

-- 
-- 
Saludos,

Alejandro Leal Obreque
Departamento de Astronomía
FCFM - UNIVERSIDAD DE CHILE
22 977 1154
aleal en das.uchile.cl
www.das.uchile.cl <http://www.das.uchile.cl/>


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