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The Impact of Far-Infrared/Sub-Millimeter Data on the Star Formation Rates of Massive Dusty Galaxies at Cosmic Noon

Authors :
Wise, Eden
Jogee, Shardha
Guo, Yuchen
Source :
2023 Compendium of Undergraduate Research in Astronomy and Space Science ASP Conference Series, Vol. 525, p. 109
Publication Year :
2023

Abstract

We explore how the star formation rate (SFR), stellar mass, and other properties of massive dusty galaxies at cosmic noon are impacted when far-infrared (FIR)/sub-millimeter data are added to datasets containing only ultraviolet (UV) to near-infrared (NIR) data. For a sample of 92 massive (stellar mass $> 4{\times}10^{10}$ M$_{\odot}$) dusty galaxies at $z\,{\sim}\,1.5$ to 3.0 (corresponding to ${\sim}25$% of cosmic history), we fit the spectral energy distributions (SEDs) based on DECam UV-to-optical data, VICS82, NEWFIRM, and Spitzer-IRAC NIR data, and Herschel-SPIRE FIR/sub-millimeter data using the Bayesian Analysis of Galaxies for Physical Inference and Parameter Estimation (BAGPIPES) SED-fitting code. We assume a delayed tau star formation history with a log$_{10}$ prior on tau and derive the posterior distributions of stellar mass, SFR, extinction, and specific SFR. We find that adding FIR/sub-millimeter data leads to SFR estimates that can be both significantly higher or lower (typically by up to a factor of 10) than estimates based on UV-to-NIR data alone, depending on the type of galaxies involved. We find that the changes in SFR scale with changes in extinction. These results highlight the importance of including FIR/sub-millimeter data in order to accurately derive the SFRs of massive dusty galaxies at $z\,{\sim}\,2$.<br />Comment: 6 pages, 4 figures. Published in 2023 Compendium of Undergraduate Research in Astronomy and Space Science ASP Conference Series

Details

Database :
arXiv
Journal :
2023 Compendium of Undergraduate Research in Astronomy and Space Science ASP Conference Series, Vol. 525, p. 109
Publication Type :
Report
Accession number :
edsarx.2312.05424
Document Type :
Working Paper
Full Text :
https://doi.org/10.26624/IHSB1222