Observing Young Variable Stars Using WFCAM at UKIRT

Details Observing Young Variable Stars Using WFCAM at UKIRT Observing Young Variable Stars Using WFCAM at UKIRT

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21734016r&link_type=abstract

American Astronomical Society, AAS Meeting #217, #340.16; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astronomy

Scientific paper

We present the results from the analysis of 120 epoch time-series photometry of a 1 square degree region of the Lynds 1003 dark cloud in the Cygnus OB7 association. Using the Wide-Field imaging camera (WFCAM) on UKIRT we were able to obtain almost-nightly J,H,K' photometry over three observing seasons of over 100,000 stars with photometric uncertainty better than 0.02 mag in the range J=10-16 mags and better than 0.5 mag down to J=19.5. From the data we establish criteria for determining variability based on the least-varying sources. We report the discovery of both periodic and stochastic variability for a number of young T Tauri stars. We compare statistical properties of known cluster members with the general field population, and discuss physical models for some of the more interesting sources.
This work was funded by the NSF REU program.

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