The Lupus transit survey for hot Jupiters: Results and lessons

Daniel D R Bayliss, David T F Weldrake, Penny D Sackett, Brandon W Tingley, Karen Michelle Lewis

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Abstract

We present the results of a deep, wide-field transit survey targeting a??Hot Jupitera?? planets in the Lupus region of the Galactic plane conducted over 53 nights concentrated in two epochs separated by a year. Using the Australian National University 40-inch telescope at Siding Spring Observatory (SSO), the survey covered a 0.66 deg2 region close to the Galactic plane (b = 11a? ) and monitored a total of 110,372 stars (15.0 V 22.0). Using difference imaging photometry, 16,134 light curves with a photometric precision of I? <0.025 mag were obtained. These light curves were searched for transits, and four candidates were detected that displayed low amplitude variability consistent with a transiting giant planet. Further investigations, including spectral typing and radial velocity measurements for some candidates, revealed that of the four, one is a true planetary companion (Lupus-TR-3), two are blended systems (Lupus-TR-1 and 4), and one is a binary (Lupus-TR-2). The results of this successful survey are instructive for optimizing the observational strategy and follow-up procedure for deep searches for transiting planets, including an upcoming survey using the SkyMapper telescope at SSO.
Original languageEnglish
Pages (from-to)4368 - 4376
Number of pages9
JournalAstronomical Journal
Volume137
Issue number5
Publication statusPublished - 2009

Cite this

Bayliss, D. D. R., Weldrake, D. T. F., Sackett, P. D., Tingley, B. W., & Lewis, K. M. (2009). The Lupus transit survey for hot Jupiters: Results and lessons. Astronomical Journal, 137(5), 4368 - 4376.