Searching for planetary transits in the field of open cluster NGC 6819 - I

被引：41

作者：

Street, RA

Horne, K

Lister, TA

Penny, AJ

Tsapras, Y

Quirrenbach, A

Safizadeh, N

Mitchell, D

Cooke, J

Cameron, AC

Shortridge, K

Meyerdierks, H

Currie, M

Clayton, M

Lockley, J

Charles, A

Davenhall, C

Taylor, M

机构：

[1] Univ St Andrews, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland

[2] Queens Univ Belfast, Sch Math & Phys, APS Div, Belfast BT7 1NN, Antrim, North Ireland

[3] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England

[4] Queen Mary Univ London, Sch Math Sci, London E1 4NS, England

[5] Univ Calif San Diego, Ctr Astrophys & Space Sci, La Jolla, CA 92093 USA

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2003年 / 340卷 / 04期

关键词：

methods : data analysis; binaries : eclipsing; stars; low-mass; brown dwarfs; planetary systems; open clusters and associations : general; open clusters and associations : individual : NGC 6819;

D O I：

10.1046/j.1365-8711.2003.06388.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present results from our survey for planetary transits in the field of the intermediate-age (similar to2.5 Gyr), metal-rich ([Fe/H]similar to+0.07) open cluster NGC 6819. We have obtained high-precision time-series photometry for over 38 000 stars in this field and have developed an effective matched-filter algorithm to search for photometric transits. This algorithm identified 8 candidate stars showing multiple transit-like events, plus 3 stars with single eclipses. On closer inspection, while most are shown to be low-mass stellar binaries, some of these events could be the result of brown dwarf companions. The data for one of the single-transit candidates indicate a minimum radius for the companion similar to that of HD 209458b.

引用

页码：1287 / 1297

页数：11

共 18 条

[1] Hubble Space Telescope time-series photometry of the transiting planet of HD 209458 [J].