Non-sinusoidal transit timing variations for the exoplanet HAT-P-12b
Considering the importance of investigating the transit timing variations (TTVs) of transiting exoplanets, we present a follow-up study of HAT-P-12b. We include six new light curves observed between 2011 and 2015 from three different observatories, in association with 25 light curves taken from the...
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| Veröffentlicht in: | Research in astronomy and astrophysics 2021-05, Vol.21 (4), p.97-185, Article 097 |
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| creator | Sariya, Devesh P. Jiang, Ing-Guey Su, Li-Hsin Yeh, Li-Chin Chang, Tze-En Moskvin, V. V. Shlyapnikov, A. A. Ignatov, V. Mkrtichian, David Griv, Evgeny Mannaday, Vineet Kumar Thakur, Parijat Sahu, D. K. Chand, Swadesh Bisht, D. Sun, Zhao Ji, Jianghui |
| description | Considering the importance of investigating the transit timing variations (TTVs) of transiting exoplanets, we present a follow-up study of HAT-P-12b. We include six new light curves observed between 2011 and 2015 from three different observatories, in association with 25 light curves taken from the published literature. The sample of the data used thus covers a time span of similar to 10.2 years with a large coverage of epochs (1160) for the transiting events of the exoplanet HAT-P-12b. The light curves are utilized to determine the orbital parameters and conduct an investigation of possible TTVs. The new linear ephemeris shows a large value of reduced chi(2), i.e chi(2)(red) (23) = 7.93, and the sinusoidal fitting using the prominent frequency coming from a periodogram shows a reduced chi(2) around 4. Based on these values and the corresponding O - C diagrams, we suspect the presence of a possible non-sinusoidal TTV in this planetary system. Finally, we find that a scenario with an additional non-transiting exoplanet could explain this TTV with an even smaller reduced chi(2) value of around 2. |
| doi_str_mv | 10.1088/1674-4527/21/4/97 |
| format | Article |
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V. ; Shlyapnikov, A. A. ; Ignatov, V. ; Mkrtichian, David ; Griv, Evgeny ; Mannaday, Vineet Kumar ; Thakur, Parijat ; Sahu, D. K. ; Chand, Swadesh ; Bisht, D. ; Sun, Zhao ; Ji, Jianghui</creator><creatorcontrib>Sariya, Devesh P. ; Jiang, Ing-Guey ; Su, Li-Hsin ; Yeh, Li-Chin ; Chang, Tze-En ; Moskvin, V. V. ; Shlyapnikov, A. A. ; Ignatov, V. ; Mkrtichian, David ; Griv, Evgeny ; Mannaday, Vineet Kumar ; Thakur, Parijat ; Sahu, D. K. ; Chand, Swadesh ; Bisht, D. ; Sun, Zhao ; Ji, Jianghui</creatorcontrib><description>Considering the importance of investigating the transit timing variations (TTVs) of transiting exoplanets, we present a follow-up study of HAT-P-12b. We include six new light curves observed between 2011 and 2015 from three different observatories, in association with 25 light curves taken from the published literature. The sample of the data used thus covers a time span of similar to 10.2 years with a large coverage of epochs (1160) for the transiting events of the exoplanet HAT-P-12b. The light curves are utilized to determine the orbital parameters and conduct an investigation of possible TTVs. The new linear ephemeris shows a large value of reduced chi(2), i.e chi(2)(red) (23) = 7.93, and the sinusoidal fitting using the prominent frequency coming from a periodogram shows a reduced chi(2) around 4. Based on these values and the corresponding O - C diagrams, we suspect the presence of a possible non-sinusoidal TTV in this planetary system. Finally, we find that a scenario with an additional non-transiting exoplanet could explain this TTV with an even smaller reduced chi(2) value of around 2.</description><identifier>ISSN: 1674-4527</identifier><identifier>EISSN: 2397-6209</identifier><identifier>DOI: 10.1088/1674-4527/21/4/97</identifier><language>eng</language><publisher>BEIJING: National Astronomical Observatories, CAS and IOP Publishing Ltd</publisher><subject>Astronomy & Astrophysics ; Extrasolar planets ; Light curve ; Observatories ; photometric ; Physical Sciences ; Planetary systems ; Science & Technology ; Sine waves ; techniques ; Transit</subject><ispartof>Research in astronomy and astrophysics, 2021-05, Vol.21 (4), p.97-185, Article 097</ispartof><rights>2021 National Astronomical Observatories, CAS and IOP Publishing Ltd.</rights><rights>Copyright IOP Publishing May 2021</rights><rights>Copyright © Wanfang Data Co. Ltd. All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>true</woscitedreferencessubscribed><woscitedreferencescount>7</woscitedreferencescount><woscitedreferencesoriginalsourcerecordid>wos000657383100001</woscitedreferencesoriginalsourcerecordid><citedby>FETCH-LOGICAL-c372t-b5cc6e509f689d866b76ec03aff205fb4775d678e99afb4a30167d48938893b23</citedby><cites>FETCH-LOGICAL-c372t-b5cc6e509f689d866b76ec03aff205fb4775d678e99afb4a30167d48938893b23</cites><orcidid>0000-0002-8988-8434</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttp://www.wanfangdata.com.cn/images/PeriodicalImages/ttwlxb/ttwlxb.jpg</thumbnail><linktopdf>$$Uhttps://iopscience.iop.org/article/10.1088/1674-4527/21/4/97/pdf$$EPDF$$P50$$Giop$$H</linktopdf><link.rule.ids>315,781,785,27929,27930,39263,53851</link.rule.ids></links><search><creatorcontrib>Sariya, Devesh P.</creatorcontrib><creatorcontrib>Jiang, Ing-Guey</creatorcontrib><creatorcontrib>Su, Li-Hsin</creatorcontrib><creatorcontrib>Yeh, Li-Chin</creatorcontrib><creatorcontrib>Chang, Tze-En</creatorcontrib><creatorcontrib>Moskvin, V. V.</creatorcontrib><creatorcontrib>Shlyapnikov, A. A.</creatorcontrib><creatorcontrib>Ignatov, V.</creatorcontrib><creatorcontrib>Mkrtichian, David</creatorcontrib><creatorcontrib>Griv, Evgeny</creatorcontrib><creatorcontrib>Mannaday, Vineet Kumar</creatorcontrib><creatorcontrib>Thakur, Parijat</creatorcontrib><creatorcontrib>Sahu, D. K.</creatorcontrib><creatorcontrib>Chand, Swadesh</creatorcontrib><creatorcontrib>Bisht, D.</creatorcontrib><creatorcontrib>Sun, Zhao</creatorcontrib><creatorcontrib>Ji, Jianghui</creatorcontrib><title>Non-sinusoidal transit timing variations for the exoplanet HAT-P-12b</title><title>Research in astronomy and astrophysics</title><addtitle>RES ASTRON ASTROPHYS</addtitle><addtitle>Res. Astron. Astrophys</addtitle><description>Considering the importance of investigating the transit timing variations (TTVs) of transiting exoplanets, we present a follow-up study of HAT-P-12b. 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Finally, we find that a scenario with an additional non-transiting exoplanet could explain this TTV with an even smaller reduced chi(2) value of around 2.</description><subject>Astronomy & Astrophysics</subject><subject>Extrasolar planets</subject><subject>Light curve</subject><subject>Observatories</subject><subject>photometric</subject><subject>Physical Sciences</subject><subject>Planetary systems</subject><subject>Science & Technology</subject><subject>Sine waves</subject><subject>techniques</subject><subject>Transit</subject><issn>1674-4527</issn><issn>2397-6209</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>HGBXW</sourceid><recordid>eNqNkMtKJDEYRsPgwLSOD-CuQMGFxM6lcltKq6MgMy50HVJViUbapEzSXt7e9JToRsFFSELO9-fjALCD0SFGUs4xFy1sGRFzguftXIkfYEaoEpATpDbA7P39F9jM-Q4hzhgnM3D8NwaYfVjl6AezbEoyIfvSFH_vw03zaJI3xceQGxdTU25tY5_juDTBlubs6ApeQky63-CnM8tst9_2LXB9enK1OIMX__6cL44uYE8FKbBjfc8tQ8pxqQbJeSe47RE1zhHEXNcKwQYupFXK1JuhqLYeWqmorKsjdAvsT3OfTHAm3Oi7uEqh_qhLeVo-dwQRjFqEVSV3J3JM8WFlc_lACaOsFYxTWik8UX2KOSfr9Jj8vUkvGiO91qrX2vRamyZYt1qJmpFvHWwXXe69Db19z6G1WEElxfWE8MKX__YWcRVKjR58P1rpvYn2cfxon4yZqiAl9Di4isFPsK_7vwLO3KNb</recordid><startdate>20210501</startdate><enddate>20210501</enddate><creator>Sariya, Devesh P.</creator><creator>Jiang, Ing-Guey</creator><creator>Su, Li-Hsin</creator><creator>Yeh, Li-Chin</creator><creator>Chang, Tze-En</creator><creator>Moskvin, V. 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V.</au><au>Shlyapnikov, A. A.</au><au>Ignatov, V.</au><au>Mkrtichian, David</au><au>Griv, Evgeny</au><au>Mannaday, Vineet Kumar</au><au>Thakur, Parijat</au><au>Sahu, D. K.</au><au>Chand, Swadesh</au><au>Bisht, D.</au><au>Sun, Zhao</au><au>Ji, Jianghui</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Non-sinusoidal transit timing variations for the exoplanet HAT-P-12b</atitle><jtitle>Research in astronomy and astrophysics</jtitle><stitle>RES ASTRON ASTROPHYS</stitle><addtitle>Res. Astron. Astrophys</addtitle><date>2021-05-01</date><risdate>2021</risdate><volume>21</volume><issue>4</issue><spage>97</spage><epage>185</epage><pages>97-185</pages><artnum>097</artnum><issn>1674-4527</issn><eissn>2397-6209</eissn><abstract>Considering the importance of investigating the transit timing variations (TTVs) of transiting exoplanets, we present a follow-up study of HAT-P-12b. We include six new light curves observed between 2011 and 2015 from three different observatories, in association with 25 light curves taken from the published literature. The sample of the data used thus covers a time span of similar to 10.2 years with a large coverage of epochs (1160) for the transiting events of the exoplanet HAT-P-12b. The light curves are utilized to determine the orbital parameters and conduct an investigation of possible TTVs. The new linear ephemeris shows a large value of reduced chi(2), i.e chi(2)(red) (23) = 7.93, and the sinusoidal fitting using the prominent frequency coming from a periodogram shows a reduced chi(2) around 4. Based on these values and the corresponding O - C diagrams, we suspect the presence of a possible non-sinusoidal TTV in this planetary system. Finally, we find that a scenario with an additional non-transiting exoplanet could explain this TTV with an even smaller reduced chi(2) value of around 2.</abstract><cop>BEIJING</cop><pub>National Astronomical Observatories, CAS and IOP Publishing Ltd</pub><doi>10.1088/1674-4527/21/4/97</doi><tpages>11</tpages><orcidid>https://orcid.org/0000-0002-8988-8434</orcidid></addata></record> |
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| subjects | Astronomy & Astrophysics Extrasolar planets Light curve Observatories photometric Physical Sciences Planetary systems Science & Technology Sine waves techniques Transit |
| title | Non-sinusoidal transit timing variations for the exoplanet HAT-P-12b |
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