Estudio de factibilidad para la detección de planetas extrasolares mediante tránsitos

PETRUCCI, R.; GONZALEZ, J. F.; JOFRÉ, E.

La Plata

Congreso; Reunión Anual de la Asociación Argentina de Asronomía; 2009

FCAGLP, UNLP

We present an analysis to evaluate the possibility of detec-ting planetary transits with the HSH telescope located in CASLEO. To determine the pho- tometric precision of this instrument, we repeatedly observed two stellar fields belonging to IC 4651 and NGC 6281 clusters. We made aperture and PSF photometry for both fields and concluded that the second technique is the more precise. We calculated the S/N of each object and determined that atmospheric extinction variations and other instrumental problems are the main factors that limit the precision for stars brighter than V=13. Finally, the results indicate that it is possible to use this instrument to detect "Hot Jupiters" and low amplitude variables (V = 0.01).