What's in a BEAST catalog paper? Lea Hagen BEAST Hack Day 17 Jan 2020 https://github.com/BEAST-Fitting/beast/issues/333 

Paper topics 1. Fitting process 2. BEAST verification 3. BEAST fitting results 4. Initial science (baby beasts) 

1. Fitting procedure • Model grid (including subgrids) • Dividing by source density or background • Artificial star tests • Noise model • Trimming model/noise grids • Fitting (including merging) 

2. BEAST verification: parameter recovery BEAST #441 log Mini log A AV log Z fA RV D Two Noise Models Simulated Value Recovered Value 

2. BEAST verification: stars with spectral types Teff & log(g) from the BEAST Spectral type from the literature B1.5 II Look up the corresponding Teff & log(g) Compare values 

2. BEAST verification: completeness log Mini log Mini log A log A log Z log Z fA fA AV RV RV Completeness BEAST #465 

3. BEAST fitting results: example fit Primary parameters: AV, mass, age Secondary parameters: RV, fA, metallicity Derived parameters: Teff, log(g) Gordon+16 Figure 14. The fitting results for an individual star in Brick21 are shown. While this figure illustrates the fit to an individual source, it is for a red giant star that is one of the common sources we find in the PHAT region. The 50% model is shown along with shaded colored regions indicating the range of models that fit within 1σ. The models shown are the full model including the observational bias (stellar+dust+bias), the physical model alone (stellar+dust), and the stellar model alone (stellar). The Astrophysical Journal, 826:104 (20pp), 2016 August 1 Gordon et al. 

3. BEAST fitting results: catalog description https://beast.readthedocs.io/en/latest/outputs.html RA, Dec, measured fluxes, predicted fluxes, chi2, Av_Best, Av_Exp, Av_p50, Av_p16, Av_p84, Rv_Best, Rv_Exp, ... 

3. BEAST fitting results: uncertainties & HR diagrams BEAST #458 σ(Param) vs. Param σ-colored HRD log A fA RV AV 

4. Science: everything vs. everything log Z fA RV D log Mini log A AV RV log A fA log Mini log Z D (artifacts are because this is a coarse test grid) BEAST #441 

4. Science: candidates of star types Extinguished OB stars for extinction curves Dusty AGB stars (high AV failure mode) Things not in the BEAST grid (background galaxies, MW stars, etc) 

4. Science: naive parameter maps AV [5’’ res., BEAST] AV [17’’ res., BEAST] S250 [MJy/sr] 1’ = 14.5 pc Relative opacity Roman-Duval+19; C. Murray 

4. Science: naive IMF