Search for Earth mass exoplanet and free-floating planet via gravitational microlensing

通过引力微透镜寻找地球质量的系外行星和自由漂浮的行星

• 批准号: 23340044
• 负责人: SUMI Takahiro
• 金额: $ 11.23万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23340044/
• 关键词: 光赤外線天文学; 系外惑星; 重力マイクロレンズ; 赤外線天文学

We, the MOA collaboration, conducted an exoplanet survey by using gravitational microlensing for three years and found 5,6,9 planets in 2011,12,13, respectively. One of these events, MOA-2011-BLG-262Lb may have a mass of less than the earth to be confirmed near future. The another planet, MOA-2011-BLG-293Lb was the first exoplanet in the habitable zone found by microlensing. we estimated the planetary abundance outside of the snow line and found the abundance is several times higher than that inside the snow line. We also found dozen free floating planet candidates.

我们，MOA合作，用三年的时间利用引力微透镜进行了一项系外行星调查，分别在2011年、12年、13年发现了5颗、6颗和9颗行星。其中的一个事件，MOA-2011-BLG-262Lb的质量可能比地球还小，不久的将来就会得到证实。另一颗行星MOA-2011-BLG-293Lb是通过微透镜发现的第一颗位于宜居带的系外行星。我们估计了雪线外的行星丰度，发现丰度是雪线内的几倍。我们还发现了十几颗自由浮动行星。

项目成果

Free-floating planets

自由漂浮的行星

• 发表时间: 2014
• 作者: Bennett;D. P.;Sumi T. (26);Abe;F. (10) (95 authors);Sumi T.;Sumi T.;Sumi T.;Sumi T.;Sumi T.;Sumi T.;Sumi T.;Sumi T.;Sumi T.;Sumi T.
• 通讯作者: Sumi T.

MOA-2011-BLG-293Lb: A TEST OF PURE SURVEY MICROLENSING PLANET DETECTIONS

• DOI: 10.1088/0004-637x/755/2/102
• 发表时间: 2012-01
• 期刊: The Astrophysical Journal
• 作者: J. Yee;Y. Shvartzvald;A. Gal-yam;I. Bond;A. Udalski;S. Kozłowski;C. Han;A. Gould;J. Skowron;D. Suzuki;F. Abe;David P. Bennett;C. Botzler;P. Chote;M. Freeman;A. Fukui;K. Furusawa;Y. Itow;S. Kobara;C. Ling;K. Masuda;Y. Matsubara;N. Miyake;Yasushi Muraki;Kantaro Ohmori;K. Ohnishi;N. Rattenbury;T. Saito;D. Sullivan;T. Sumi;K. Suzuki;W. Sweatman;S. Takino;P. Tristram;K. Wada;M. Szymański;M. Kubiak;G. Pietrzyński;G. Pietrzyński;I. Soszyński;R. Poleski;K. Ulaczyk;Ł. Wyrzykowski;Ł. Wyrzykowski;P. Pietrukowicz;William H. Allen;L. Almeida;V. Batista;M. Bos;G. Christie;D. Depoy;S. Dong;Jack D. Drummond;I. Finkelman;B. Gaudi;E. Gorbikov;C. Henderson;D. Higgins;Francisco Jablonski;S. Kaspi;I. Manulis;D. Maoz;J. Mccormick;D. McGregor;L. Monard;D. Moorhouse;J. A. Muñoz;T. Natusch;H. Ngan;E. Ofek;R. Pogge;R. Santallo;Thiam-Guan Tan;G. Thornley;I. Shin;J.-Y. Choi;S.-Y. Park;C.‐U. Lee;J. Koo

MOA-IIの重力マイクロレンズによる銀河系バー構造の解明

使用 MOA-II 的引力微透镜阐明银河棒结构

• 发表时间: 2014
• 作者: 住 貴宏;MOAコラボレーション
• 通讯作者: MOAコラボレーション

MOA 2010-BLG-477Lb: CONSTRAINING THE MASS OF A MICROLENSING PLANET FROM MICROLENSING PARALLAX, ORBITAL MOTION, AND DETECTION OF BLENDED LIGHT

• DOI: 10.1088/0004-637x/754/1/73
• 发表时间: 2012-05
• 期刊: The Astrophysical Journal
• 作者: E. Bachelet;I. Shin;C. Han;P. Fouqu'e;A. Gould;J. Menzies;J. Beaulieu;D. Bennett;I. Bond;S. Dong;D. Heyrovsk'y;J. Marquette;J. Marshall;J. Skowron;R. Street;T. Sumi;A. Udalski;L. Abe;K. Agabi;M. Albrow;W. Allen;E. Bertin;M. Bos;D. Bramich;J. Chavez;G. Christie;A. Cole;N. Crouzet;S. Dieters;M. Dominik;J. Drummond;J. Greenhill;T. Guillot;C. Henderson;F. Hessman;K. Horne;M. Hundertmark;J. Johnson;U. Jørgensen;R. Kandori;C. Liebig;D. M'ekarnia;J. Mccormick;D. Moorhouse;T. Nagayama;D. Nataf;T. Natusch;S. Nishiyama;J. Rivet;K. Sahu;Y. Shvartzvald;G. Thornley;A. Tomczak;Y. Tsapras;J. Yee;V. Batista;C. S. Bennett;S. Brillant;J. Caldwell;A. Cassan;E. Corrales;C. Coutures;D. Prester;J. Donatowicz;D. Kubas;R. Martin;A. Williams;M. Zub;L. Almeida;D. Depoy;B. Gaudi;L. Hung;F. Jablonski;S. Kaspi;N. Klein;C.‐U. Lee;Y. Lee;J. Koo;D. Maoz;J. A. Muñoz;R. Pogge;D. Polishook;Avi Shporer;F. Abe;C. Botzler;P. Chote;M. Freeman;A. Fukui;K. Furusawa;P. Harris;Y. Itow;S. Kobara;C. Ling;K. Masuda;Y. Matsubara;N. Miyake;K. Ohmori;K. Ohnishi;N. Rattenbury;T. Saito;D. Sullivan;D. Suzuki;W. Sweatman;P. Tristram;K. Wada;P. Yock;M. Szyma'nski;I. Soszy'nski;M. Kubiak;R. Poleski;K. Ulaczyk;G. Pietrzy'nski;L. Wyrzykowski;N. Kains;C. Snodgrass;I. Steele;K. Alsubai;V. Bozza;P. Browne;M. Burgdorf;S. Novati;P. Dodds;S. Dreizler;F. Finet;T. Gerner;S. Hardis;K. Harpsoe;T. Hinse;E. Kerins;L. Mancini;M. Mathiasen;M. Penny;S. Proft;S. Rahvar;D. Ricci;G. Scarpetta;S. Schafer;F. Schonebeck;J. Southworth;J. Surdej;J. Wambsganss

The wide field Instrared Survey Telescope

大视场红外巡天望远镜

• 发表时间: 2012
• 作者: Sumi;T
• 通讯作者: T