Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21346014o&link_type=abstract
American Astronomical Society, AAS Meeting #213, #460.14; Bulletin of the American Astronomical Society, Vol. 41, p.369
Astronomy and Astrophysics
Astronomy
Scientific paper
LSST is an 8.4m aperture telescope with a 9.6 deg² field of view and a 3.2 Gigapixel camera that will image the entire available sky every three nights. LSST will discover millions of periodic variable stars, which can be valuable as standard candles to allow mapping of Galactic structure. We have investigated LSST's capability to recover RR Lyrae lightcurve shapes and periods as a function of stellar distance and LSST survey length. A LSST simulation tool was used to sample model RR Lyrae lightcurves of varying metallicity, mass, luminosity, temperature, and oscillation mode. The simulation tool returns each lightcurve as it would have been sampled by LSST, including realistic limiting magnitudes and photometric scatter. The stars were placed on the sky to sample the complete set of LSST cadences, including universal cadence fields, overlap regions, deep drilling fields, solar system fields, and Milky Way fields. The lightcurve recovery capability was investigated for LSST survey lengths of 1 to 10 years, and for RR Lyrae stars with g-band brightnesses ranging from 17th to 26th magnitude. We attempt to recover both the input periods and Fourier-based shapes of the phased lightcurves.
Becker Andrew C.
Culliton Christopher C.
Furqan Muhammad
Oluseyi Hakeem
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