TY - JOUR
T1 - The lupus transit survey for hot Jupiters
T2 - Results and lessons
AU - Bayliss, Daniel D.R.
AU - Weldrake, David T.F.
AU - Sackett, Penny D.
AU - Tingley, Brandon W.
AU - Lewis, Karen M.
PY - 2009/5
Y1 - 2009/5
N2 - We present the results of a deep, wide-field transit survey targeting "Hot Jupiter" 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 = 11°) 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 σ < 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.
AB - We present the results of a deep, wide-field transit survey targeting "Hot Jupiter" 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 = 11°) 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 σ < 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.
KW - planetary systems
KW - techniques: photometric
UR - http://www.scopus.com/inward/record.url?scp=77949298036&partnerID=8YFLogxK
U2 - 10.1088/0004-6256/137/5/4368
DO - 10.1088/0004-6256/137/5/4368
M3 - Article
SN - 0004-6256
VL - 137
SP - 4368
EP - 4376
JO - Astronomical Journal
JF - Astronomical Journal
IS - 5
ER -