Search and Characterization of Transiting Planets around Nearby M Dwarfs

2012 Fiscal Year Final Research Report

• Project/Area Number: 23840046
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Astronomy
• Research Institution: National Astronomical Observatory of Japan
• Principal Investigator: NARITA Norio 国立天文台, 太陽系外惑星探査プロジェクト室, 特任助教 (60610532)
• Project Period (FY): 2011 – 2012
• Keywords: 太陽系外惑星 / トランジット / 分光観測 / 測光観測 / 直接撮像観測 / 惑星探索 / 惑星大気 / 惑星形成

Research Abstract

In this research, we have aimed to search and characterize Earth-like or super-Earth planets around nearby M dwarfs (stars with lower temperature than the Sun).To realize such studies, we first established a methodology to achieve high precision observations, and then we conducted a survey for new exoplanets using 188cm telescope at Okayama Astrophysical Observatory. The survey is still ongoing, but we are preparing a paper for our initial results. In addition, we observed two known such exoplanets, named GJ1214b and GJ3470b, and revealed atmospheric nature of those planets.

Research Products

• [Journal Article] IRSFS IRIUS JHKs Simultaneous Transit Photometry of GJ1214b (2013)
  • Author(s): NorioNarita
  • Journal Title: PASJ Volume: vol65,id.27
  • URL: http://pasj.asj.or.jp/v65/v65n2.html
  • Peer Reviewed
• [Journal Article] A Common Proper Motion Stellar Companion to HAT-P-7 (2012)
  • Author(s): NorioNarita
  • Journal Title: PASJ Volume: vol.64,id.L7
  • URL: http://pasj.asj.or.jp/v64/v64n6.html
  • Peer Reviewed
• [Journal Article] 太陽系近傍の低温度星を公転する新しいトランジット惑星の探索 (2012)
  • Author(s): 成田 憲保
  • Journal Title: 天文月報 Volume: 2012年4月号, Pages: 238-247
  • URL: www.asj.or.jp/geppou/contents/2012_04.html
• [Journal Article] トランジット惑星探しの歴史 (2012)
  • Author(s): 成田 憲保
  • Journal Title: 天文月報 Volume: 2012年1月号 Pages: 7-15
  • URL: www.asj.or.jp/geppou/contents/2012_01.html
• [Journal Article] XO-2b: a Prograde Planet with Negligible Eccentricity and an Additional Radial Velocity Variation (2011)
  • Author(s): NorioNarita
  • Journal Title: PASJ Volume: vol 63, Pages: L67-L71
  • URL: http://pasj.asj.or.jp/v63/v63n6.html
  • Peer Reviewed
• [Presentation] Transmission Spectroscopy of a Transiting Super-Earth GJ1214b (2013)
  • Author(s): Norio Narita
  • Organizer: Subaru User's Meeting
  • Place of Presentation: 国立天文台, 東京, 日本
  • Year and Date: 2013-01-16
• [Presentation] Time-Resolved Photomery and Spectroscopy of Transiting Exoplanetary Systems (2012)
  • Author(s): Norio Narita
  • Organizer: TMT Science and Instrumentation Workshop 2012
  • Place of Presentation: The Inter University Center for Astronomy and Astrophysics, Pune, India
  • Year and Date: 2012-12-11
• [Presentation] Photometric Studies of Transiting Exoplanets (2012)
  • Author(s): Norio Narita
  • Organizer: GUAS/SOKENDAI Asian Winter Schoo 2012
  • Place of Presentation: 国立天文台, 東京, 日本
  • Year and Date: 2012-12-03
• [Presentation] スーパーアースの透過光分光研究の現状、若手研究者による分野間連携研究ワークショップ「トランジット観測によるスーパーアースの大気組成と起源の解明」 (2012)
  • Author(s): 成田憲保
  • Organizer: 鴨方・遙照山ホテル
  • Place of Presentation: 岡山、日本
  • Year and Date: 2012-09-25
• [Presentation] これまでにわかった太陽系外惑星の世界、若手研究者による分野間連携研究セミナー (2012)
  • Author(s): 成田憲保
  • Organizer: 「太陽系外惑星と光合成」
  • Place of Presentation: 基礎生物学研究所、愛知、日本
  • Year and Date: 2012-08-28
• [Presentation] Searching and Characterizing new transiting exoplanets around cool stars with Japanese facilities (2012)
  • Author(s): Norio Narita
  • Organizer: Transiting Planets in the House of the Sun: A Workshop on M Dwarf Stars and Their Planets
  • Place of Presentation: Maui, Hawaii,USA
  • Year and Date: 2012-06-06
• [Presentation] Search for New Transiting Exoplanets around Nearby Cool Dwarfs and thei (2012)
  • Author(s): 成田憲保
  • Organizer: Characterization、第8回太陽系外惑星大研究会
  • Place of Presentation: 熱海・ニューフジヤホテル、静岡、日本
  • Year and Date: 2012-04-19
• [Presentation] TMTで見る太陽系外惑星 (2012)
  • Author(s): 成田憲保
  • Organizer: 2011年度 日本天文学会春季年会 TMT特別セッション
  • Place of Presentation: 龍谷大学、京都、日本
  • Year and Date: 2012-03-21
• [Presentation] 系外惑星探査の歴史:これまでとこれから (2012)
  • Author(s): 成田憲保
  • Organizer: 第5回宇宙総合学研究ユニットシンポジウム
  • Place of Presentation: 京都大学、京都、日本
  • Year and Date: 2012-02-04
• [Remarks] (1)アウトリーチ活動情報:小学生向け出張講師:2件
• [Remarks] 高校生向け出張講師:1件
• [Remarks] 大学生向け観測体験企画講師:1件
• [Remarks] 一般向けサイエンスカフェ講師:3件
• [Remarks] 一般向け出張講演:5件
• [Remarks] 天文学会向け解説記事執筆:2件
• [Remarks] 宇宙図2013の共同製作(上記アウトリーチ活動情報も掲載)
  • URL: http://optik2.mtk.nao.ac.jp/~narita/
• [Remarks] 一家に1枚宇宙図2013の共同製作