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Machine-Learned Identification of RR Lyrae Stars from Sparse, Multi-band Data: the PS1 Sample
Branimir Sesar, Nina Hernitschek, Sandra Mitrović +16
RR Lyrae stars may be the best practical tracers of Galactic halo (sub-)structure and kinematics. The PanSTARRS1 (PS1) survey offers multi-band, multi-epoch, precise photometr…
A Probabilistic Approach to Fitting Period-Luminosity Relations and Validating Gaia Parallaxes
Branimir Sesar, Morgan Fouesneau, Adrian M. Price-Whelan +3
Pulsating stars, such as Cepheids, Miras, and RR Lyrae stars, are important distance indicators and calibrators of the "cosmic distance ladder", and yet their period-luminosity-met…
Maximizing Science in the Era of LSST: A Community-Based Study of Needed US Capabilities
Joan Najita, Beth Willman, Douglas P. Finkbeiner +48
The Large Synoptic Survey Telescope (LSST) will be a discovery machine for the astronomy and physics communities, revealing astrophysical phenomena from the Solar System to the out…
TGAS Error Renormalization from the RR Lyrae Period-Luminosity Relation
Andrew Gould, Juna A. Kollmeier, Branimir Sesar
The Gaia team has applied a renormalization to their internally-derived parallax errors $$ σ_{tgas}(π) = \sqrt{[Aσ_{int}(π)]^2 + σ_0^2}; \ \ \ \ (A,σ_0) = (1.4,0.2…
A Synoptic Map of Halo Substructures from the Pan-STARRS1 3π Survey
Edouard J. Bernard, Annette M. N. Ferguson, Edward F. Schlafly +18
We present a panoramic map of the entire Milky Way halo north of dec~-30 degrees (~30,000 deg^2), constructed by applying the matched-filter technique to the Pan-STARRS1 3Pi Survey…
A Global Astrometric Solution for Pan-STARRS referenced to ICRF2
C. T. Berghea, V. V. Makarov, J. Frouard +13
We describe development and application of a Global Astrometric Solution (GAS) to the problem of Pan-STARRS1 (PS1) astrometry. Current PS1 astrometry is based on differential astro…