Back KMTNet German Réseau coréen de télescopes à microlentilles French 韓国マイクロレンジング望遠鏡ネットワーク Japanese 외계행성 탐색시스템 Korean

KMTNet

Korea Microlensing Telescope Network
Alternative namesKorea Microlensing Telescope Network Edit this at Wikidata
OrganizationKorea Astronomy and Space Science Institute
WavelengthOptical/Infrared
Built2015
Diameter1.6 m (5 ft 3 in)
Angular resolution0.37 arcsec
Focal length5.16 m (16.9 ft)
Websitehttps://kmtnet.kasi.re.kr/~ulens/
[edit on Wikidata]

The Korea Microlensing Telescope Network (KMTNet; Korean: 외계행성 탐색시스템) is an ongoing wide-field photometric system that aims to discover extrasolar planets using gravitational microlensing.[1][2][3] The system leverages three identical 1.6 m wide-field optical telescopes located at the Cerro-Tololo Inter-American Observatory (CTIO) in Chile, [4] the South African Astronomical Observatory (SAAO) in South Africa,[5] and the Siding Spring Observatory (SSO) in Australia [6]. All three telescopes share a latitude of −30 degrees enabling continuous monitoring of the galactic bulge during 8 months of each year and other targets in the south hemisphere during non-bulge season such as near-earth asteroids and supernovae.[7][8][9] Currently, 232 microlensing planets have been described by KMTNet.[1] The KMNet survey was recently used to show that super-earths are common in Jupiter-like orbits.[10][11]

  1. ^ a b "KMTNet". kmtnet.kasi.re.kr. Retrieved 2025-04-29.
  2. ^ Henderson, Calen B.; Gaudi, B. Scott; Han, Cheongho; Nataf, David; Skowron, Jan; Penny, Matthew; Gould, Andrew (2015). "KMTNet: A Cold Exoplanet Census Through a Global Microlensing Survey". American Astronomical Society Meeting Abstracts #225. 225: 202.03. Bibcode:2015AAS...22520203H.
  3. ^ "Korea Microlensing Telescope Network (KMTNet)". M3 Engineering & Technology. Retrieved 2025-04-29.
  4. ^ info@noirlab.edu. "KMTNet 1.6-meter Telescope". noirlab.edu. Retrieved 2025-04-29.
  5. ^ "KMTnet Site Live View - Sutherland, South Africa". kmtnet.saao.ac.za. Retrieved 2025-04-29.
  6. ^ "KMTNet". Research School of Astronomy & Astrophysics. Retrieved 2025-04-29.
  7. ^ Park, Hong Soo; Moon, Dae-Sik; Zaritsky, Dennis; Kim, Sang Chul; Lee, Youngdae; Cha, Sang-Mok; Lee, Yongseok (2019). "Dwarf Galaxy Discoveries from the KMTNet Supernova Program. II. The NGC 3585 Group and Its Dynamical State". The Astrophysical Journal. 885 (1): 88. arXiv:1909.11260. Bibcode:2019ApJ...885...88P. doi:10.3847/1538-4357/ab4794. ISSN 0004-637X.
  8. ^ Erasmus, N.; Mommert, M.; Trilling, D. E.; Sickafoose, A. A.; van Gend, C.; Hora, J. L. (2017). "Characterization of Near-Earth Asteroids Using KMTNET-SAAO". The Astronomical Journal. 154 (4): 162. arXiv:1709.03305. Bibcode:2017AJ....154..162E. doi:10.3847/1538-3881/aa88be. ISSN 1538-3881.
  9. ^ Kim, Seung-Lee; Lee, Chung-Uk; Park, Byeong-Gon; Kim, Dong-Jin; Cha, Sang-Mok; Lee, Yongseok; Han, Cheongho; Chun, Moo-Young; Yuk, Insoo (2016-02-29). "Kmtnet: A Network of 1.6 M Wide-Field Optical Telescopes Installed at Three Southern Observatories". Journal of the Korean Astronomical Society. 49 (1): 37–44. Bibcode:2016JKAS...49...37K. doi:10.5303/JKAS.2016.49.1.37. ISSN 1225-4614.
  10. ^ "Astronomers find Earth-like exoplanets common across the cosmos". Astronomers find Earth-like exoplanets common across the cosmos. Retrieved 2025-04-29.
  11. ^ Zang, Weicheng; Jung, Youn Kil; Yee, Jennifer C.; Hwang, Kyu-Ha; Yang, Hongjing; Udalski, Andrzej; Sumi, Takahiro; Gould, Andrew; Mao, Shude; Albrow, Michael D.; Chung, Sun-Ju; Han, Cheongho; Ryu, Yoon-Hyun; Shin, In-Gu; Shvartzvald, Yossi (2025-04-25). "Microlensing events indicate that super-Earth exoplanets are common in Jupiter-like orbits". Science. 388 (6745): 400–404. arXiv:2504.20158. Bibcode:2025Sci...388..400Z. doi:10.1126/science.adn6088. PMID 40273242.

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