title: Comparison of Different Star Formation Tracers in Nearby AGN Host Galaxies
creator: Smirnova-Pinchukova, Irina
subject: ddc-520
subject: 520 Astronomy and allied sciences
description: This work is a part of the Close AGN Reference Survey (CARS, cars-survey.org) that is intended to provide the most detailed view of the AGN - host galaxy connection and establish a reference for high-redshifts. The survey consists of 40 nearby Seyfert 1 galaxies with optical integral field unit datacubes and a multi-wavelength observational dataset.   The first part of the thesis presents the star-formation-related analysis of the CARS first data release. The panchromatic spectral energy distribution is modeled with additional AGN constraints to infer stellar masses and infrared star formation rates. I also present the novel method of calculating the recent star formation rate from the Hα emission in the conditions of AGN contamination using spectral and spatial datacube information. Then I compare the resulting infrared and Hα star formation rates with CO(1-0) data to analyze the star formation history and the trends between AGN and host galaxies.   The second part of the thesis explores the data from SOFIA airborne observatory. The [CII] far-infrared line is a bright coolant in the interstellar medium accessible with ALMA and often used as a star formation rate indicator. The discovery of one of the few known [CII] excess galaxies HE1353-1917 is introduced together with the discussion of its mechanisms and the meaning for the high-redshift objects. This is complemented by the follow-up SOFIA observations of HE0412-0803 that allowed to confirm the proposed [CII] excess mechanism and intrigued us with its puzzling VLA radio continuum data.   Overall, in this thesis, I accurately infer, analyze, and compare star formation rate tracers for the CARS objects emphasizing the power of the multi-wavelength approach.
date: 2022
type: Dissertation
type: info:eu-repo/semantics/doctoralThesis
type: NonPeerReviewed
format: application/pdf
identifier: https://archiv.ub.uni-heidelberg.de/volltextserverhttps://archiv.ub.uni-heidelberg.de/volltextserver/32059/1/Thesis_Smirnova.pdf
identifier: DOI:10.11588/heidok.00032059
identifier: urn:nbn:de:bsz:16-heidok-320592
identifier:   Smirnova-Pinchukova, Irina  (2022) Comparison of Different Star Formation Tracers in Nearby AGN Host Galaxies.  [Dissertation]     
relation: https://archiv.ub.uni-heidelberg.de/volltextserver/32059/
rights: info:eu-repo/semantics/openAccess
rights: Please see front page of the work (Sorry, Dublin Core plugin does not recognise license id)
language: eng