Photometric transits from the MACHO project database

被引:16
作者
Drake, AJ [1 ]
Cook, KH
机构
[1] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA
[2] Pontificia Univ Catolica Chile, Dept Astron, Santiago 22, Chile
[3] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA
关键词
binaries : eclipsing; planetary systems; stars; low-mass; brown dwarfs;
D O I
10.1086/381868
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We have searched the MACHO project photometry database for light curves consistent with the transits of low-luminosity objects. By analyzing the 180,000 brightest stars in 14 0.5 deg(2) fields toward the Galactic bulge, we have found a few hundred low-amplitude eclipsing binary systems. We have used the shapes and colors of these objects to separate the transits of objects with relatively small radii from the grazing eclipses of stars with larger radii. We find nine objects with short-period eclipses consistent with either giant extrasolar planets or late-type dwarf stars.
引用
收藏
页码:379 / 387
页数:9
相关论文
共 36 条
[11]   Observational limits on terrestrial-sized inner planets around the CM Draconis system using the photometric transit method with a matched-filter algorithm [J].
Doyle, LR ;
Deeg, HJ ;
Kozhevnikov, VP ;
Oetiker, B ;
Martín, EL ;
Blue, JE ;
Rottler, L ;
Stone, RPS ;
Ninkov, Z ;
Jenkins, JM ;
Schneider, J ;
Dunham, EW ;
Doyle, MF ;
Paleologou, E .
ASTROPHYSICAL JOURNAL, 2000, 535 (01) :338-349
[12]   On the selection of photometric planetary transits [J].
Drake, AJ .
ASTROPHYSICAL JOURNAL, 2003, 589 (02) :1020-1026
[13]   OGLE-TR-3: A possible new transiting planet [J].
Dreizler, S ;
Hauschildt, PH ;
Kley, W ;
Rauch, T ;
Schuh, SL ;
Werner, K ;
Wolff, B .
ASTRONOMY & ASTROPHYSICS, 2003, 402 (02) :791-799
[14]   The effect of tidal inflation instability on the mass and dynamical evolution of extrasolar planets with ultrashort periods [J].
Gu, PG ;
Lin, DNC ;
Bodenheimer, PH .
ASTROPHYSICAL JOURNAL, 2003, 588 (01) :509-534
[15]   Giant planets at small orbital distances [J].
Guillot, T ;
Burrows, A ;
Hubbard, WB ;
Lunine, JI ;
Saumon, D .
ASTROPHYSICAL JOURNAL, 1996, 459 (01) :L35-L38
[16]   Evolution of "51 Pegasus b-like" planets [J].
Guillot, T ;
Showman, AP .
ASTRONOMY & ASTROPHYSICS, 2002, 385 (01) :156-165
[17]   Theory of giant planets [J].
Hubbard, WB ;
Burrows, A ;
Lunine, JI .
ANNUAL REVIEW OF ASTRONOMY AND ASTROPHYSICS, 2002, 40 :103-136
[18]   Some tests to establish confidence in planets discovered by transit photometry [J].
Jenkins, JM ;
Caldwell, DA ;
Borucki, WJ .
ASTROPHYSICAL JOURNAL, 2002, 564 (01) :495-507
[19]   High-resolution spectroscopic follow-up of OGLE planetary transit candidates in the Galactic bulge: Two possible Jupiter-mass planets and two blends [J].
Konacki, M ;
Torres, G ;
Sasselov, DD ;
Jha, S .
ASTROPHYSICAL JOURNAL, 2003, 597 (02) :1076-1091
[20]   An extrasolar planet that transits the disk of its parent star [J].
Konacki, M ;
Torres, G ;
Jha, S ;
Sasselov, DD .
NATURE, 2003, 421 (6922) :507-509