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Reddening-Independent Quasar Selection from a Wide-Field Optical and Near-IR Imaging Survey
R. G. Sharp, C. N. Sabbey, A. K. Vivas +4
We combine deep, wide-field near-IR and optical imaging to demonstrate a reddening-independent quasar selection technique based on identifying outliers in the (g-z) / (z-H) colour…
A Large Area CCD Camera for the Schmidt Telescope at the Venezuelan National Astronomical Observatory
C. Baltay, J. A. Snyder, P. Andrews +25
We have designed, constructed and put into operation a large area CCD camera that covers a large fraction of the image plane of the 1 meter Schmidt telescope at Llano del Hato in V…
The low-mass young stellar population in Orion OB1
Cesar Briceño, Nuria Calvet, Anna K. Vivas +2
We present recent results from our ongoing large scale variability survey of the Orion OB1 Association. In an area of ~ 25 square degrees we have unveiled new populations of low-ma…