High cadence near infrared timing observations of extrasolar planets

C. Cáceres, V. D. Ivanov, D. Minniti, D. Naef, C. Melo, E. Mason, F. Selman, G. Pietrzynski

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

34 Citas (Scopus)


Currently the only technique sensitive to Earth mass planets around nearby stars (that are too close for microlensing) is the monitoring of the transit time variations. We search for additional planets in the systems of the hot Neptune GJ 436b, and the hot-Jupiter XO-1b, using high cadence observations in the J and KS bands. New high-precision transit timing measurements are reported: GJ 436b TC = 2 454 238.47898 ± 0.00046 HJD; XO-1b TC(A) = 2 454 218.83331 ± 0.00114 HJD, TC(B) = 2 454 222.77539 ± 0.00036 HJD, TC(C) = 2 454 222.77597 ± 0.00039 HJD, TC(D) = 2 454 226.71769 ± 0.00034 HJD, and they were used to derive new ephemeris values. We also determined depths for these transits. No statistically significant timing deviations were detected. We demonstrate that the high cadence, ground based near-infrared observations are successful in constraining the mean transit time to ̃ 30 s, and are a viable alternative to space missions.

Idioma originalInglés
Páginas (desde-hasta)481-486
Número de páginas6
PublicaciónAstronomy and Astrophysics
EstadoPublicada - 3 nov. 2009

Áreas temáticas de ASJC Scopus

  • Astronomía y astrofísica
  • Ciencias planetarias y espacial


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