DECaPS Stellar Inference
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<h1 style="text-align: center; font-size: 24px;">DECaPS Stellar Inference</h1>
<p>Constraints on the distances, extinctions, and stellar types for 709 million stars used in the construction of the DECaPS 3D dust map from Zucker, Saydjari, & Speagle et al. 2025.</p>
<h3 style="font-size: 18px; font-weight: bold; margin-top: 20px;">Identifiers</h3>
<ul>
<li><b>decaps_id:</b> Unique DECaPS2 object ID from Saydjari et al. 2023</li>
<li><b>gaia_id:</b> Gaia DR3 ID</li>
</ul>
<h3 style="font-size: 18px; font-weight: bold; margin-top: 20px;">Astrometric Data</h3>
<ul>
<li><b>parallax:</b> Gaia DR3 parallax in mas</li>
<li><b>parallax_error:</b> Gaia DR3 parallax error in mas</li>
<li><b>ra:</b> Right Ascension from DECaPS2 in deg</li>
<li><b>dec:</b> Declination from DECaPS2 in deg</li>
</ul>
<h3 style="font-size: 18px; font-weight: bold; margin-top: 20px;">Photometric Data</h3>
<ul>
<li><b>decaps_fracflux (x5):</b> Fraction of flux in this object's PSF that comes from this object in each DECaPS band</li>
<li><b>mag (x13):</b> Magnitudes from DECaPS2 (grizY), VVV (JHK), 2MASS (JHK), and unWISE (W1, W2) in mag</li>
<li><b>magerr (x13):</b> Magnitude errors from DECaPS2, VVV, 2MASS, and unWISE in mag</li>
</ul>
<h3 style="font-size: 18px; font-weight: bold; margin-top: 20px;">Samples and χ² </h3>
<ul>
<li><b>chi2:</b> Best-fit χ² value from models used in the fit</li>
<li><b>samps_dist (x5):</b> Five random samples of distance in kpc</li>
<li><b>samps_extinction (x5):</b> Five random samples of A<sub>V</sub> in mag</li>
<li><b>samps_rv (x5):</b> Five random samples of R<sub>V</sub></li>
<li><b>samps_models (x5):</b> Five random samples of the model index for accessing the input parameter grid</li>
</ul>
<h3 style="font-size: 18px; font-weight: bold; margin-top: 20px;">Percentile Data</h3>
<ul>
<li><b>dist (x5):</b> 2.5th, 16th, 50th, 84th, 97.5th percentiles of the samples distance in kpc</li>
<li><b>rv (x5):</b> 2.5th, 16th, 50th, 84th, 97.5th percentiles of the samples in R<sub>V</sub></li>
<li><b>eep (x5):</b> 2.5th, 16th, 50th, 84th, 97.5th percentiles of the sampels in MIST EEP</li>
<li><b>feh (x5):</b> 2.5th, 16th, 50th, 84th, 97.5th percentiles of the samples FeH</li>
<li><b>loga (x5):</b> 2.5th, 16th, 50th, 84th, 97.5th percentiles of the samples log age in years</li>
<li><b>logg (x5):</b> 2.5th, 16th, 50th, 84th, 97.5th percentiles of the samples in surface gravity</li>
<li><b>logl (x5):</b> 2.5th, 16th, 50th, 84th, 97.5th percentiles of the samples in log L<sub>bol</sub> in L<sub>⊙</sub></li>
<li><b>logt (x5):</b> 2.5th, 16th, 50th, 84th, 97.5th percentiles of the samples in log T<sub>eff</sub> in K</li>
<li><b>mini (x5):</b> 2.5th, 16th, 50th, 84th, 97.5th percentiles of the samples in initial mass in M<sub>⊙</sub></li>
<li><b>extinction (x5):</b> 2.5th, 16th, 50th, 84th, 97.5th percentiles of the samples in A<sub>V</sub> in mag</li>
</ul>
</body>
提供机构：
Harvard Dataverse
创建时间：
2025-02-28
