A dearth of planetary transits in the direction of NGC 6940

被引:18
作者
Hood, B [1 ]
Cameron, AC
Kane, SR
Bramich, DM
Horne, K
Street, RA
Bond, IA
Penny, AJ
Tsapras, Y
Quirrenbach, A
Safizadeh, N
Mitchell, D
Cooke, J
机构
[1] Univ St Andrews, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland
[2] Queens Univ Belfast, Dept Pure & Appl Phys, APS Div, Belfast BT7 1NN, Antrim, North Ireland
[3] Inst Astrofis Canarias, E-38200 Tenerife, Spain
[4] Univ Edinburgh, Royal Observ, Inst Astron, Edinburgh EH9 3HJ, Midlothian, Scotland
[5] SETI Inst, Mountain View, CA 94043 USA
[6] Queen Mary Univ London, Sch Math Sci, London E1 4NS, England
[7] Univ Calif San Diego, Ctr Astrophys & Space Sci, La Jolla, CA 92093 USA
关键词
methods : data analysis; planetary systems; stars : variables : other; open clusters and associations : individual : NGC 6940;
D O I
10.1111/j.1365-2966.2005.09104.x
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present results of our survey for planetary transits in the field of NGC 6940. We think nearly all of our observed stars are field stars. We have obtained high precision (similar to 3-10 mmag at the bright end) photometric observations of similar to 50 000 stars spanning 18 nights in an attempt to identify low-amplitude and short-period transit events. We have used a matched filter analysis to identify 14 stars that show multiple events and four stars that show single transits. Of these 18 candidates, we have identified two that should be further researched. However, none of the candidates is a convincing hot Jupiter.
引用
收藏
页码:791 / 800
页数:10
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