Systematic KMTNet Planetary Anomaly Search, Paper III: One Wide-Orbit Planet And Two Stellar Binaries

Only a few wide-orbit planets around old stars have been detected, which limits our statistical understanding of this planet population. Following the systematic search for planetary anomalies in microlensing events found by the Korea Microlensing Telescope Network (KMTNet), we present the discovery...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:arXiv.org 2021-12
Hauptverfasser: Wang, Hanyue, Zang, Weicheng, Zhu, Wei, Kyu-Ha Hwang, Udalski, Andrzej, Gould, Andrew, Han, Cheongho, Albrow, Michael D, Sun-Ju, Chung, Jung, Youn Kil, Kim, Doeon, Yoon-Hyun, Ryu, Shin, In-Gu, Shvartzvald, Yossi, Yee, Jennifer C, Sang-Mok Cha, Dong-Jin, Kim, Hyoun-Woo, Kim, Seung-Lee, Kim, Chung-Uk, Lee, Dong-Joo, Lee, Lee, Yongseok, Park, Byeong-Gon, Pogge, Richard W, Poleski, Radoslaw, Mróz, Przemek, Skowron, Jan, Szymański, Michał K, Soszyński, Igor, Pietrukowicz, Paweł, Kozłowski, Szymon, Ulaczyk, Krzysztof, Rybicki, Krzysztof A, Iwanek, Patryk, Wrona, Marcin, Gromadzki, Mariusz, Yang, Hongjing, Mao, Shude, Zhang, Xiangyu
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page
container_issue
container_start_page
container_title arXiv.org
container_volume
creator Wang, Hanyue
Zang, Weicheng
Zhu, Wei
Kyu-Ha Hwang
Udalski, Andrzej
Gould, Andrew
Han, Cheongho
Albrow, Michael D
Sun-Ju, Chung
Jung, Youn Kil
Kim, Doeon
Yoon-Hyun, Ryu
Shin, In-Gu
Shvartzvald, Yossi
Yee, Jennifer C
Sang-Mok Cha
Dong-Jin, Kim
Hyoun-Woo, Kim
Seung-Lee, Kim
Chung-Uk, Lee
Dong-Joo, Lee
Lee, Yongseok
Park, Byeong-Gon
Pogge, Richard W
Poleski, Radoslaw
Mróz, Przemek
Skowron, Jan
Szymański, Michał K
Soszyński, Igor
Pietrukowicz, Paweł
Kozłowski, Szymon
Ulaczyk, Krzysztof
Rybicki, Krzysztof A
Iwanek, Patryk
Wrona, Marcin
Gromadzki, Mariusz
Yang, Hongjing
Mao, Shude
Zhang, Xiangyu
description Only a few wide-orbit planets around old stars have been detected, which limits our statistical understanding of this planet population. Following the systematic search for planetary anomalies in microlensing events found by the Korea Microlensing Telescope Network (KMTNet), we present the discovery and analysis of three events that were initially thought to contain wide-orbit planets. The anomalous feature in the light curve of OGLE-2018-BLG-0383 is caused by a planet with mass ratio \(q=2.1\times 10^{-4}\) and a projected separation \(s=2.45\). This makes it the lowest mass-ratio microlensing planet at such wide orbits. The other two events, KMT-2018-BLG-0998 and OGLE-2018-BLG-0271, are shown to be stellar binaries (\(q>0.1\)) with rather close (\(s
doi_str_mv 10.48550/arxiv.2112.02414
format Article
fullrecord <record><control><sourceid>proquest_arxiv</sourceid><recordid>TN_cdi_arxiv_primary_2112_02414</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2607468464</sourcerecordid><originalsourceid>FETCH-LOGICAL-a524-97248aa2d659f887375400ca91d6764dbcea2fc61ff69cbed8c015ee80d64963</originalsourceid><addsrcrecordid>eNo1kMtOwzAURC0kJKrSD2CFJbak2I7tOOxKxSOi0EqpxDK6tW-EqzQpTgr07wktrGYzM5o5hFxwNpZGKXYD4dt_jgXnYsyE5PKEDEQc88hIIc7IqG3XjDGhE6FUPCCY79sON9B5S59flq_Y0UUFNXYQ9nRSNxuo9jRHCPb9mi5gi4FmWXZL5zXSN-8wmoeV_8_0AUeXXw3NO6wqCPTO1xA8tufktISqxdGfDkn-cL-cPkWz-WM2ncwiUEJGaSKkARBOq7Q0JokTJRmzkHKnEy3dyiKI0mpeljq1K3TGMq4QDXNapjoekstj6wFBsQ1-078oflEUBxS94-ro2IbmY4dtV6ybXaj7SYXQLJHaSC3jHzmZYBI</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2607468464</pqid></control><display><type>article</type><title>Systematic KMTNet Planetary Anomaly Search, Paper III: One Wide-Orbit Planet And Two Stellar Binaries</title><source>arXiv.org</source><source>Free E- Journals</source><creator>Wang, Hanyue ; Zang, Weicheng ; Zhu, Wei ; Kyu-Ha Hwang ; Udalski, Andrzej ; Gould, Andrew ; Han, Cheongho ; Albrow, Michael D ; Sun-Ju, Chung ; Jung, Youn Kil ; Kim, Doeon ; Yoon-Hyun, Ryu ; Shin, In-Gu ; Shvartzvald, Yossi ; Yee, Jennifer C ; Sang-Mok Cha ; Dong-Jin, Kim ; Hyoun-Woo, Kim ; Seung-Lee, Kim ; Chung-Uk, Lee ; Dong-Joo, Lee ; Lee, Yongseok ; Park, Byeong-Gon ; Pogge, Richard W ; Poleski, Radoslaw ; Mróz, Przemek ; Skowron, Jan ; Szymański, Michał K ; Soszyński, Igor ; Pietrukowicz, Paweł ; Kozłowski, Szymon ; Ulaczyk, Krzysztof ; Rybicki, Krzysztof A ; Iwanek, Patryk ; Wrona, Marcin ; Gromadzki, Mariusz ; Yang, Hongjing ; Mao, Shude ; Zhang, Xiangyu</creator><creatorcontrib>Wang, Hanyue ; Zang, Weicheng ; Zhu, Wei ; Kyu-Ha Hwang ; Udalski, Andrzej ; Gould, Andrew ; Han, Cheongho ; Albrow, Michael D ; Sun-Ju, Chung ; Jung, Youn Kil ; Kim, Doeon ; Yoon-Hyun, Ryu ; Shin, In-Gu ; Shvartzvald, Yossi ; Yee, Jennifer C ; Sang-Mok Cha ; Dong-Jin, Kim ; Hyoun-Woo, Kim ; Seung-Lee, Kim ; Chung-Uk, Lee ; Dong-Joo, Lee ; Lee, Yongseok ; Park, Byeong-Gon ; Pogge, Richard W ; Poleski, Radoslaw ; Mróz, Przemek ; Skowron, Jan ; Szymański, Michał K ; Soszyński, Igor ; Pietrukowicz, Paweł ; Kozłowski, Szymon ; Ulaczyk, Krzysztof ; Rybicki, Krzysztof A ; Iwanek, Patryk ; Wrona, Marcin ; Gromadzki, Mariusz ; Yang, Hongjing ; Mao, Shude ; Zhang, Xiangyu</creatorcontrib><description>Only a few wide-orbit planets around old stars have been detected, which limits our statistical understanding of this planet population. Following the systematic search for planetary anomalies in microlensing events found by the Korea Microlensing Telescope Network (KMTNet), we present the discovery and analysis of three events that were initially thought to contain wide-orbit planets. The anomalous feature in the light curve of OGLE-2018-BLG-0383 is caused by a planet with mass ratio \(q=2.1\times 10^{-4}\) and a projected separation \(s=2.45\). This makes it the lowest mass-ratio microlensing planet at such wide orbits. The other two events, KMT-2018-BLG-0998 and OGLE-2018-BLG-0271, are shown to be stellar binaries (\(q&gt;0.1\)) with rather close (\(s&lt;1\)) separations. We briefly discuss the properties of known wide-orbit microlensing planets and show that the survey observations are crucial in discovering and further statistically constraining such a planet population.</description><identifier>EISSN: 2331-8422</identifier><identifier>DOI: 10.48550/arxiv.2112.02414</identifier><language>eng</language><publisher>Ithaca: Cornell University Library, arXiv.org</publisher><subject>Anomalies ; Binary stars ; Light curve ; Microlenses ; Physics - Astrophysics of Galaxies ; Physics - Earth and Planetary Astrophysics ; Planetary orbits ; Planets ; Population (statistical)</subject><ispartof>arXiv.org, 2021-12</ispartof><rights>2021. This work is published under http://creativecommons.org/publicdomain/zero/1.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>http://creativecommons.org/publicdomain/zero/1.0</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>228,230,776,780,881,27904</link.rule.ids><backlink>$$Uhttps://doi.org/10.1093/mnras/stab3581$$DView published paper (Access to full text may be restricted)$$Hfree_for_read</backlink><backlink>$$Uhttps://doi.org/10.48550/arXiv.2112.02414$$DView paper in arXiv$$Hfree_for_read</backlink></links><search><creatorcontrib>Wang, Hanyue</creatorcontrib><creatorcontrib>Zang, Weicheng</creatorcontrib><creatorcontrib>Zhu, Wei</creatorcontrib><creatorcontrib>Kyu-Ha Hwang</creatorcontrib><creatorcontrib>Udalski, Andrzej</creatorcontrib><creatorcontrib>Gould, Andrew</creatorcontrib><creatorcontrib>Han, Cheongho</creatorcontrib><creatorcontrib>Albrow, Michael D</creatorcontrib><creatorcontrib>Sun-Ju, Chung</creatorcontrib><creatorcontrib>Jung, Youn Kil</creatorcontrib><creatorcontrib>Kim, Doeon</creatorcontrib><creatorcontrib>Yoon-Hyun, Ryu</creatorcontrib><creatorcontrib>Shin, In-Gu</creatorcontrib><creatorcontrib>Shvartzvald, Yossi</creatorcontrib><creatorcontrib>Yee, Jennifer C</creatorcontrib><creatorcontrib>Sang-Mok Cha</creatorcontrib><creatorcontrib>Dong-Jin, Kim</creatorcontrib><creatorcontrib>Hyoun-Woo, Kim</creatorcontrib><creatorcontrib>Seung-Lee, Kim</creatorcontrib><creatorcontrib>Chung-Uk, Lee</creatorcontrib><creatorcontrib>Dong-Joo, Lee</creatorcontrib><creatorcontrib>Lee, Yongseok</creatorcontrib><creatorcontrib>Park, Byeong-Gon</creatorcontrib><creatorcontrib>Pogge, Richard W</creatorcontrib><creatorcontrib>Poleski, Radoslaw</creatorcontrib><creatorcontrib>Mróz, Przemek</creatorcontrib><creatorcontrib>Skowron, Jan</creatorcontrib><creatorcontrib>Szymański, Michał K</creatorcontrib><creatorcontrib>Soszyński, Igor</creatorcontrib><creatorcontrib>Pietrukowicz, Paweł</creatorcontrib><creatorcontrib>Kozłowski, Szymon</creatorcontrib><creatorcontrib>Ulaczyk, Krzysztof</creatorcontrib><creatorcontrib>Rybicki, Krzysztof A</creatorcontrib><creatorcontrib>Iwanek, Patryk</creatorcontrib><creatorcontrib>Wrona, Marcin</creatorcontrib><creatorcontrib>Gromadzki, Mariusz</creatorcontrib><creatorcontrib>Yang, Hongjing</creatorcontrib><creatorcontrib>Mao, Shude</creatorcontrib><creatorcontrib>Zhang, Xiangyu</creatorcontrib><title>Systematic KMTNet Planetary Anomaly Search, Paper III: One Wide-Orbit Planet And Two Stellar Binaries</title><title>arXiv.org</title><description>Only a few wide-orbit planets around old stars have been detected, which limits our statistical understanding of this planet population. Following the systematic search for planetary anomalies in microlensing events found by the Korea Microlensing Telescope Network (KMTNet), we present the discovery and analysis of three events that were initially thought to contain wide-orbit planets. The anomalous feature in the light curve of OGLE-2018-BLG-0383 is caused by a planet with mass ratio \(q=2.1\times 10^{-4}\) and a projected separation \(s=2.45\). This makes it the lowest mass-ratio microlensing planet at such wide orbits. The other two events, KMT-2018-BLG-0998 and OGLE-2018-BLG-0271, are shown to be stellar binaries (\(q&gt;0.1\)) with rather close (\(s&lt;1\)) separations. We briefly discuss the properties of known wide-orbit microlensing planets and show that the survey observations are crucial in discovering and further statistically constraining such a planet population.</description><subject>Anomalies</subject><subject>Binary stars</subject><subject>Light curve</subject><subject>Microlenses</subject><subject>Physics - Astrophysics of Galaxies</subject><subject>Physics - Earth and Planetary Astrophysics</subject><subject>Planetary orbits</subject><subject>Planets</subject><subject>Population (statistical)</subject><issn>2331-8422</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GOX</sourceid><recordid>eNo1kMtOwzAURC0kJKrSD2CFJbak2I7tOOxKxSOi0EqpxDK6tW-EqzQpTgr07wktrGYzM5o5hFxwNpZGKXYD4dt_jgXnYsyE5PKEDEQc88hIIc7IqG3XjDGhE6FUPCCY79sON9B5S59flq_Y0UUFNXYQ9nRSNxuo9jRHCPb9mi5gi4FmWXZL5zXSN-8wmoeV_8_0AUeXXw3NO6wqCPTO1xA8tufktISqxdGfDkn-cL-cPkWz-WM2ncwiUEJGaSKkARBOq7Q0JokTJRmzkHKnEy3dyiKI0mpeljq1K3TGMq4QDXNapjoekstj6wFBsQ1-078oflEUBxS94-ro2IbmY4dtV6ybXaj7SYXQLJHaSC3jHzmZYBI</recordid><startdate>20211204</startdate><enddate>20211204</enddate><creator>Wang, Hanyue</creator><creator>Zang, Weicheng</creator><creator>Zhu, Wei</creator><creator>Kyu-Ha Hwang</creator><creator>Udalski, Andrzej</creator><creator>Gould, Andrew</creator><creator>Han, Cheongho</creator><creator>Albrow, Michael D</creator><creator>Sun-Ju, Chung</creator><creator>Jung, Youn Kil</creator><creator>Kim, Doeon</creator><creator>Yoon-Hyun, Ryu</creator><creator>Shin, In-Gu</creator><creator>Shvartzvald, Yossi</creator><creator>Yee, Jennifer C</creator><creator>Sang-Mok Cha</creator><creator>Dong-Jin, Kim</creator><creator>Hyoun-Woo, Kim</creator><creator>Seung-Lee, Kim</creator><creator>Chung-Uk, Lee</creator><creator>Dong-Joo, Lee</creator><creator>Lee, Yongseok</creator><creator>Park, Byeong-Gon</creator><creator>Pogge, Richard W</creator><creator>Poleski, Radoslaw</creator><creator>Mróz, Przemek</creator><creator>Skowron, Jan</creator><creator>Szymański, Michał K</creator><creator>Soszyński, Igor</creator><creator>Pietrukowicz, Paweł</creator><creator>Kozłowski, Szymon</creator><creator>Ulaczyk, Krzysztof</creator><creator>Rybicki, Krzysztof A</creator><creator>Iwanek, Patryk</creator><creator>Wrona, Marcin</creator><creator>Gromadzki, Mariusz</creator><creator>Yang, Hongjing</creator><creator>Mao, Shude</creator><creator>Zhang, Xiangyu</creator><general>Cornell University Library, arXiv.org</general><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>L6V</scope><scope>M7S</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>GOX</scope></search><sort><creationdate>20211204</creationdate><title>Systematic KMTNet Planetary Anomaly Search, Paper III: One Wide-Orbit Planet And Two Stellar Binaries</title><author>Wang, Hanyue ; Zang, Weicheng ; Zhu, Wei ; Kyu-Ha Hwang ; Udalski, Andrzej ; Gould, Andrew ; Han, Cheongho ; Albrow, Michael D ; Sun-Ju, Chung ; Jung, Youn Kil ; Kim, Doeon ; Yoon-Hyun, Ryu ; Shin, In-Gu ; Shvartzvald, Yossi ; Yee, Jennifer C ; Sang-Mok Cha ; Dong-Jin, Kim ; Hyoun-Woo, Kim ; Seung-Lee, Kim ; Chung-Uk, Lee ; Dong-Joo, Lee ; Lee, Yongseok ; Park, Byeong-Gon ; Pogge, Richard W ; Poleski, Radoslaw ; Mróz, Przemek ; Skowron, Jan ; Szymański, Michał K ; Soszyński, Igor ; Pietrukowicz, Paweł ; Kozłowski, Szymon ; Ulaczyk, Krzysztof ; Rybicki, Krzysztof A ; Iwanek, Patryk ; Wrona, Marcin ; Gromadzki, Mariusz ; Yang, Hongjing ; Mao, Shude ; Zhang, Xiangyu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a524-97248aa2d659f887375400ca91d6764dbcea2fc61ff69cbed8c015ee80d64963</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Anomalies</topic><topic>Binary stars</topic><topic>Light curve</topic><topic>Microlenses</topic><topic>Physics - Astrophysics of Galaxies</topic><topic>Physics - Earth and Planetary Astrophysics</topic><topic>Planetary orbits</topic><topic>Planets</topic><topic>Population (statistical)</topic><toplevel>online_resources</toplevel><creatorcontrib>Wang, Hanyue</creatorcontrib><creatorcontrib>Zang, Weicheng</creatorcontrib><creatorcontrib>Zhu, Wei</creatorcontrib><creatorcontrib>Kyu-Ha Hwang</creatorcontrib><creatorcontrib>Udalski, Andrzej</creatorcontrib><creatorcontrib>Gould, Andrew</creatorcontrib><creatorcontrib>Han, Cheongho</creatorcontrib><creatorcontrib>Albrow, Michael D</creatorcontrib><creatorcontrib>Sun-Ju, Chung</creatorcontrib><creatorcontrib>Jung, Youn Kil</creatorcontrib><creatorcontrib>Kim, Doeon</creatorcontrib><creatorcontrib>Yoon-Hyun, Ryu</creatorcontrib><creatorcontrib>Shin, In-Gu</creatorcontrib><creatorcontrib>Shvartzvald, Yossi</creatorcontrib><creatorcontrib>Yee, Jennifer C</creatorcontrib><creatorcontrib>Sang-Mok Cha</creatorcontrib><creatorcontrib>Dong-Jin, Kim</creatorcontrib><creatorcontrib>Hyoun-Woo, Kim</creatorcontrib><creatorcontrib>Seung-Lee, Kim</creatorcontrib><creatorcontrib>Chung-Uk, Lee</creatorcontrib><creatorcontrib>Dong-Joo, Lee</creatorcontrib><creatorcontrib>Lee, Yongseok</creatorcontrib><creatorcontrib>Park, Byeong-Gon</creatorcontrib><creatorcontrib>Pogge, Richard W</creatorcontrib><creatorcontrib>Poleski, Radoslaw</creatorcontrib><creatorcontrib>Mróz, Przemek</creatorcontrib><creatorcontrib>Skowron, Jan</creatorcontrib><creatorcontrib>Szymański, Michał K</creatorcontrib><creatorcontrib>Soszyński, Igor</creatorcontrib><creatorcontrib>Pietrukowicz, Paweł</creatorcontrib><creatorcontrib>Kozłowski, Szymon</creatorcontrib><creatorcontrib>Ulaczyk, Krzysztof</creatorcontrib><creatorcontrib>Rybicki, Krzysztof A</creatorcontrib><creatorcontrib>Iwanek, Patryk</creatorcontrib><creatorcontrib>Wrona, Marcin</creatorcontrib><creatorcontrib>Gromadzki, Mariusz</creatorcontrib><creatorcontrib>Yang, Hongjing</creatorcontrib><creatorcontrib>Mao, Shude</creatorcontrib><creatorcontrib>Zhang, Xiangyu</creatorcontrib><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science &amp; Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Engineering Collection</collection><collection>Engineering Database</collection><collection>Publicly Available Content Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>Engineering Collection</collection><collection>arXiv.org</collection><jtitle>arXiv.org</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wang, Hanyue</au><au>Zang, Weicheng</au><au>Zhu, Wei</au><au>Kyu-Ha Hwang</au><au>Udalski, Andrzej</au><au>Gould, Andrew</au><au>Han, Cheongho</au><au>Albrow, Michael D</au><au>Sun-Ju, Chung</au><au>Jung, Youn Kil</au><au>Kim, Doeon</au><au>Yoon-Hyun, Ryu</au><au>Shin, In-Gu</au><au>Shvartzvald, Yossi</au><au>Yee, Jennifer C</au><au>Sang-Mok Cha</au><au>Dong-Jin, Kim</au><au>Hyoun-Woo, Kim</au><au>Seung-Lee, Kim</au><au>Chung-Uk, Lee</au><au>Dong-Joo, Lee</au><au>Lee, Yongseok</au><au>Park, Byeong-Gon</au><au>Pogge, Richard W</au><au>Poleski, Radoslaw</au><au>Mróz, Przemek</au><au>Skowron, Jan</au><au>Szymański, Michał K</au><au>Soszyński, Igor</au><au>Pietrukowicz, Paweł</au><au>Kozłowski, Szymon</au><au>Ulaczyk, Krzysztof</au><au>Rybicki, Krzysztof A</au><au>Iwanek, Patryk</au><au>Wrona, Marcin</au><au>Gromadzki, Mariusz</au><au>Yang, Hongjing</au><au>Mao, Shude</au><au>Zhang, Xiangyu</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Systematic KMTNet Planetary Anomaly Search, Paper III: One Wide-Orbit Planet And Two Stellar Binaries</atitle><jtitle>arXiv.org</jtitle><date>2021-12-04</date><risdate>2021</risdate><eissn>2331-8422</eissn><abstract>Only a few wide-orbit planets around old stars have been detected, which limits our statistical understanding of this planet population. Following the systematic search for planetary anomalies in microlensing events found by the Korea Microlensing Telescope Network (KMTNet), we present the discovery and analysis of three events that were initially thought to contain wide-orbit planets. The anomalous feature in the light curve of OGLE-2018-BLG-0383 is caused by a planet with mass ratio \(q=2.1\times 10^{-4}\) and a projected separation \(s=2.45\). This makes it the lowest mass-ratio microlensing planet at such wide orbits. The other two events, KMT-2018-BLG-0998 and OGLE-2018-BLG-0271, are shown to be stellar binaries (\(q&gt;0.1\)) with rather close (\(s&lt;1\)) separations. We briefly discuss the properties of known wide-orbit microlensing planets and show that the survey observations are crucial in discovering and further statistically constraining such a planet population.</abstract><cop>Ithaca</cop><pub>Cornell University Library, arXiv.org</pub><doi>10.48550/arxiv.2112.02414</doi><oa>free_for_read</oa></addata></record>
fulltext fulltext
identifier EISSN: 2331-8422
ispartof arXiv.org, 2021-12
issn 2331-8422
language eng
recordid cdi_arxiv_primary_2112_02414
source arXiv.org; Free E- Journals
subjects Anomalies
Binary stars
Light curve
Microlenses
Physics - Astrophysics of Galaxies
Physics - Earth and Planetary Astrophysics
Planetary orbits
Planets
Population (statistical)
title Systematic KMTNet Planetary Anomaly Search, Paper III: One Wide-Orbit Planet And Two Stellar Binaries
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-23T19%3A23%3A31IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_arxiv&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Systematic%20KMTNet%20Planetary%20Anomaly%20Search,%20Paper%20III:%20One%20Wide-Orbit%20Planet%20And%20Two%20Stellar%20Binaries&rft.jtitle=arXiv.org&rft.au=Wang,%20Hanyue&rft.date=2021-12-04&rft.eissn=2331-8422&rft_id=info:doi/10.48550/arxiv.2112.02414&rft_dat=%3Cproquest_arxiv%3E2607468464%3C/proquest_arxiv%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2607468464&rft_id=info:pmid/&rfr_iscdi=true