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Discovery of a Jupiter/Saturn analog with gravitational microlensing.
Science 2008; 319(5865):927-30Sci

Abstract

Searches for extrasolar planets have uncovered an astonishing diversity of planetary systems, yet the frequency of solar system analogs remains unknown. The gravitational microlensing planet search method is potentially sensitive to multiple-planet systems containing analogs of all the solar system planets except Mercury. We report the detection of a multiple-planet system with microlensing. We identify two planets with masses of approximately 0.71 and approximately 0.27 times the mass of Jupiter and orbital separations of approximately 2.3 and approximately 4.6 astronomical units orbiting a primary star of mass approximately 0.50 solar mass at a distance of approximately 1.5 kiloparsecs. This system resembles a scaled version of our solar system in that the mass ratio, separation ratio, and equilibrium temperatures of the planets are similar to those of Jupiter and Saturn. These planets could not have been detected with other techniques; their discovery from only six confirmed microlensing planet detections suggests that solar system analogs may be common.

Authors+Show Affiliations

Department of Astronomy, Ohio State University, 140 West 18th Avenue, Columbus, OH 43210, USA. gaudi@astronomy.ohio-state.eduNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

18276883

Citation

Gaudi, B S., et al. "Discovery of a Jupiter/Saturn Analog With Gravitational Microlensing." Science (New York, N.Y.), vol. 319, no. 5865, 2008, pp. 927-30.
Gaudi BS, Bennett DP, Udalski A, et al. Discovery of a Jupiter/Saturn analog with gravitational microlensing. Science. 2008;319(5865):927-30.
Gaudi, B. S., Bennett, D. P., Udalski, A., Gould, A., Christie, G. W., Maoz, D., ... Macintosh, B. (2008). Discovery of a Jupiter/Saturn analog with gravitational microlensing. Science (New York, N.Y.), 319(5865), pp. 927-30. doi:10.1126/science.1151947.
Gaudi BS, et al. Discovery of a Jupiter/Saturn Analog With Gravitational Microlensing. Science. 2008 Feb 15;319(5865):927-30. PubMed PMID: 18276883.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Discovery of a Jupiter/Saturn analog with gravitational microlensing. AU - Gaudi,B S, AU - Bennett,D P, AU - Udalski,A, AU - Gould,A, AU - Christie,G W, AU - Maoz,D, AU - Dong,S, AU - McCormick,J, AU - Szymanski,M K, AU - Tristram,P J, AU - Nikolaev,S, AU - Paczynski,B, AU - Kubiak,M, AU - Pietrzynski,G, AU - Soszynski,I, AU - Szewczyk,O, AU - Ulaczyk,K, AU - Wyrzykowski,L, AU - ,, AU - Depoy,D L, AU - Han,C, AU - Kaspi,S, AU - Lee,C-U, AU - Mallia,F, AU - Natusch,T, AU - Pogge,R W, AU - Park,B-G, AU - ,, AU - Abe,F, AU - Bond,I A, AU - Botzler,C S, AU - Fukui,A, AU - Hearnshaw,J B, AU - Itow,Y, AU - Kamiya,K, AU - Korpela,A V, AU - Kilmartin,P M, AU - Lin,W, AU - Masuda,K, AU - Matsubara,Y, AU - Motomura,M, AU - Muraki,Y, AU - Nakamura,S, AU - Okumura,T, AU - Ohnishi,K, AU - Rattenbury,N J, AU - Sako,T, AU - Saito,To, AU - Sato,S, AU - Skuljan,L, AU - Sullivan,D J, AU - Sumi,T, AU - Sweatman,W L, AU - Yock,P C M, AU - ,, AU - Albrow,M D, AU - Allan,A, AU - Beaulieu,J-P, AU - Burgdorf,M J, AU - Cook,K H, AU - Coutures,C, AU - Dominik,M, AU - Dieters,S, AU - Fouqué,P, AU - Greenhill,J, AU - Horne,K, AU - Steele,I, AU - Tsapras,Y, AU - ,, AU - Chaboyer,B, AU - Crocker,A, AU - Frank,S, AU - Macintosh,B, PY - 2008/2/16/pubmed PY - 2008/2/16/medline PY - 2008/2/16/entrez SP - 927 EP - 30 JF - Science (New York, N.Y.) JO - Science VL - 319 IS - 5865 N2 - Searches for extrasolar planets have uncovered an astonishing diversity of planetary systems, yet the frequency of solar system analogs remains unknown. The gravitational microlensing planet search method is potentially sensitive to multiple-planet systems containing analogs of all the solar system planets except Mercury. We report the detection of a multiple-planet system with microlensing. We identify two planets with masses of approximately 0.71 and approximately 0.27 times the mass of Jupiter and orbital separations of approximately 2.3 and approximately 4.6 astronomical units orbiting a primary star of mass approximately 0.50 solar mass at a distance of approximately 1.5 kiloparsecs. This system resembles a scaled version of our solar system in that the mass ratio, separation ratio, and equilibrium temperatures of the planets are similar to those of Jupiter and Saturn. These planets could not have been detected with other techniques; their discovery from only six confirmed microlensing planet detections suggests that solar system analogs may be common. SN - 1095-9203 UR - https://www.unboundmedicine.com/medline/citation/18276883/Discovery_of_a_Jupiter/Saturn_analog_with_gravitational_microlensing_ L2 - http://www.sciencemag.org/cgi/pmidlookup?view=long&pmid=18276883 DB - PRIME DP - Unbound Medicine ER -