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An Older, More Quiescent Universe from Panchromatic SED Fitting of the 3D-HST Survey
Joel Leja, Benjamin D. Johnson, Charlie Conroy +8
Galaxy observations are influenced by many physical parameters: stellar masses, star formation rates (SFRs), star formation histories (SFHs), metallicities, dust, black hole activi…
How to Measure Galaxy Star Formation Histories II: Nonparametric Models
Joel Leja, Adam C. Carnall, Benjamin D. Johnson +2
Nonparametric star formation histories (SFHs) have long promised to be the `gold standard' for galaxy spectral energy distribution (SED) modeling as they are flexible enough to des…
How to measure galaxy star-formation histories I: Parametric models
A. C. Carnall, J. Leja, B. D. Johnson +3
Parametric models for galaxy star-formation histories (SFHs) are widely used, though they are known to impose strong priors on physical parameters. This has consequences for measur…
ZFOURGE: Extreme 5007 emission may be a common early-lifetime phase for star-forming galaxies at
Jonathan H. Cohn, Joel Leja, Kim-Vy H. Tran +12
Using the \prospector\ spectral energy distribution (SED) fitting code, we analyze the properties of 19 Extreme Emission Line Galaxies (EELGs) identified in the bluest composite SE…
A Closer look at Bursty Star Formation with and Distributions
Najmeh Emami, Brian Siana, Daniel R. Weisz +3
We investigate the bursty star formation histories (SFHs) of dwarf galaxies using the distribution of log() of 185 local galaxies. We expand on the work of Weisz et…
Star Cluster Ages in the Gaia Era
Jieun Choi, Charlie Conroy, Yuan-Sen Ting +3
We use the framework developed as part of the MESA Isochrones and Stellar Tracks (MIST) project to assess the utility of several types of observables in jointly measuring the age a…