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Time-Series Ensemble Photometry and the Search for Variable Stars in the Open Cluster M11
Jonathan R. Hargis, Eric L. Sandquist, David H. Bradstreet
This work presents the first large-scale photometric variability survey of the intermediate age (~200 Myr) open cluster M11. Thirteen nights of data over two observing seasons were…
The Unusual Luminosity Function of the Globular Cluster M10
Denise L. Pollard, Eric L. Sandquist, Jonathan R. Hargis +1
We present the I-band luminosity function of the differentially reddened globular cluster M10. We combine photometric analysis derived from wide-field (23' x 23') images that inclu…
The Luminosity Function and Color-Magnitude Diagram of the Globular Cluster M12
Jonathan R. Hargis, Eric L. Sandquist, Michael Bolte
In this paper we present the V and I luminosity functions and color-magnitude diagrams derived from wide-field (23 arcmin by 23 arcmin) BVI photometry of the intermediate metallici…