%0 Journal Article %1 Gilliland2000 %A Gilliland, Ronald L %A Brown, T M %A Guhathakurta, P %A Sarajedini, A %A Milone, E F %A Albrow, M D %A Baliber, N R %A Bruntt, H %A Burrows, A %A Charbonneau, D %A Choi, P %A Cochran, W D %A Edmonds, P D %A Frandsen, S %A Howell, J H %A Lin, D N C %A Marcy, G W %A Mayor, M %A Naef, D %A Sigurdsson, S %A Stagg, C R %A Vandenberg, D A %A Vogt, S. S. %A Williams, M. D. %D 2000 %J The Astrophysical Journal %K 2000 47Tucanae NGC104 a:Marcy clusters planets %N 1 %P L47--L51 %R 10.1086/317334 %T A Lack of Planets in 47 Tucanae from a ITALHubble Space Telescope/ITAL Search %U http://adsabs.harvard.edu/abs/2000ApJ...545L..47G http://stacks.iop.org/1538-4357/545/i=1/a=L47 %V 545 %X We report results from a large Hubble Space Telescope project to observe a significant (\~34,000) ensemble of main-sequence stars in the globular cluster 47 Tucanae with a goal of defining the frequency of inner orbit, gas giant planets. Simulations based on the characteristics of the 8.3 days of time series data in the F555W and F814W Wide Field Planetary Camera 2 (WFPC2) filters show that \~17 planets should be detected by photometric transit signals if the frequency of hot Jupiters found in the solar neighborhood is assumed to hold for 47 Tuc. The experiment provided high-quality data sufficient to detect planets. A full analysis of these WFPC2 data reveals \~75 variables, but no light curves resulted for which a convincing interpretation as a planet could be made. The planet frequency in 47 Tuc is at least an order of magnitude below that for the solar neighborhood. The cause of the absence of close-in planets in 47 Tuc is not yet known; presumably the low metallicity and/or crowding of 47 Tuc interfered with planet formation, with orbital evolution to close-in positions, or with planet survival. Based on observations with the NASA/ESA Hubble Space Telescope obtained at STScI, which is operated by AURA, Inc., under NASA contract NAS5-26555.

@article{Gilliland2000, abstract = {We report results from a large Hubble Space Telescope project to observe a significant (\~{}34,000) ensemble of main-sequence stars in the globular cluster 47 Tucanae with a goal of defining the frequency of inner orbit, gas giant planets. Simulations based on the characteristics of the 8.3 days of time series data in the F555W and F814W Wide Field Planetary Camera 2 (WFPC2) filters show that \~{}17 planets should be detected by photometric transit signals if the frequency of hot Jupiters found in the solar neighborhood is assumed to hold for 47 Tuc. The experiment provided high-quality data sufficient to detect planets. A full analysis of these WFPC2 data reveals \~{}75 variables, but no light curves resulted for which a convincing interpretation as a planet could be made. The planet frequency in 47 Tuc is at least an order of magnitude below that for the solar neighborhood. The cause of the absence of close-in planets in 47 Tuc is not yet known; presumably the low metallicity and/or crowding of 47 Tuc interfered with planet formation, with orbital evolution to close-in positions, or with planet survival. Based on observations with the NASA/ESA Hubble Space Telescope obtained at STScI, which is operated by AURA, Inc., under NASA contract NAS5-26555.}, added-at = {2013-08-03T23:59:24.000+0200}, author = {Gilliland, Ronald L and Brown, T M and Guhathakurta, P and Sarajedini, A and Milone, E F and Albrow, M D and Baliber, N R and Bruntt, H and Burrows, A and Charbonneau, D and Choi, P and Cochran, W D and Edmonds, P D and Frandsen, S and Howell, J H and Lin, D N C and Marcy, G W and Mayor, M and Naef, D and Sigurdsson, S and Stagg, C R and Vandenberg, D A and Vogt, S. S. and Williams, M. D.}, biburl = {https://www.bibsonomy.org/bibtex/21c44a336beef1b04be7e957f6725031f/danielcarrera}, doi = {10.1086/317334}, file = {:home/daniel/Papers/Thursday-Meetings/005729.web.pdf:pdf}, interhash = {c54884dcdd1d2cb46e21dcec0208b9a9}, intrahash = {1c44a336beef1b04be7e957f6725031f}, issn = {0004637X}, journal = {The Astrophysical Journal}, keywords = {2000 47Tucanae NGC104 a:Marcy clusters planets}, month = dec, number = 1, pages = {L47--L51}, timestamp = {2013-08-05T15:08:21.000+0200}, title = {{A Lack of Planets in 47 Tucanae from a [ITAL]Hubble Space Telescope[/ITAL] Search}}, url = {http://adsabs.harvard.edu/abs/2000ApJ...545L..47G http://stacks.iop.org/1538-4357/545/i=1/a=L47}, volume = 545, year = 2000 }