Stellar, Gas, and Dust Emission of Star-forming Galaxies out to z ∼ 2

Gautam Nagaraj, Robin Ciardullo, William P. Bowman, Caryl Gronwall

Research output: Contribution to journalArticlepeer-review

Abstract

While dust is a major player in galaxy evolution, its relationship with gas and stellar radiation in the early universe is still not well understood. We combine 3D-Hubble Space Telescope emission-line fluxes with far-UV through far-IR photometry in a sample of 669 emission-line galaxies (ELGs) between 1.2 < z < 1.9 and use the MCSED spectral energy distribution fitting code to constrain the galaxies' physical parameters, such as their star formation rates (SFRs), stellar masses, and dust masses. We find that the assumption of energy balance between dust attenuation and emission is likely unreasonable in many cases. We highlight a relationship between the mass-specific SFR, stellar mass, and dust mass, although its exact form is still unclear. Finally, a stacking of Hα and Hβ fluxes shows that nebular attenuation increases with stellar mass and SFR for IR-bright ELGs.

Original languageEnglish (US)
Article number34
JournalAstrophysical Journal
Volume913
Issue number1
DOIs
StatePublished - May 20 2021

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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