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| Paper: |
The Impact of Far-Infrared/ Sub-Millimeter Data on the Star Formation Rates of Massive Dusty Galaxies at Cosmic Noon |
| Volume: |
525, Compendium of Undergraduate Research in Astronomy and Space Science |
| Page: |
109 |
| Authors: |
Wise, E.; Jogee, S.; Guo, Y. |
| 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 > 4×1010 MSun) dusty galaxies at z ∼ 1.5 to 3.0 (corresponding to ∼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 log10 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 ∼ 2. |
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