Abstract
We report the period, eccentricity, and mass determination for the Transiting Exoplanet Survey Satellite (TESS) single-transit event candidate TOI-222, which displayed a single 3000 ppm transit in the TESS 2-min cadence data from Sector 2. We determine the orbital period via radial velocity measurements (P = 33.9 d), which allowed for ground-based photometric detection of two subsequent transits. Our data show that the companion to TOI-222 is a low-mass star, with a radius of 0.18+−003910 R☉ and a mass of 0.23 ± 0.01 M☉. This discovery showcases the ability to efficiently discover long-period systems from TESS single-transit events using a combination of radial velocity monitoring coupled with high-precision ground-based photometry.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1761-1769 |
| Number of pages | 9 |
| Journal | Monthly Notices of the Royal Astronomical Society |
| Volume | 492 |
| Issue number | 2 |
| DOIs | |
| State | Published - Feb 1 2020 |
All Science Journal Classification (ASJC) codes
- Astronomy and Astrophysics
- Space and Planetary Science
Keywords
- Planetary systems
- Stars: individual: TOI-222
- Techniques: photometric
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In: Monthly Notices of the Royal Astronomical Society, Vol. 492, No. 2, 01.02.2020, p. 1761-1769.
Research output: Contribution to journal › Article › peer-review
TY - JOUR
T1 - TOI-222
T2 - A single-transit TESS candidate revealed to be a 34-d eclipsing binary with CORALIE, EulerCam, and NGTS
AU - Lendl, Monika
AU - Bouchy, François
AU - Gill, Samuel
AU - Nielsen, Louise D.
AU - Turner, Oliver
AU - Stassun, Keivan
AU - Acton, Jack S.
AU - Anderson, David R.
AU - Armstrong, David J.
AU - Bayliss, Daniel
AU - Belardi, Claudia
AU - Bryant, Edward M.
AU - Burleigh, Matthew R.
AU - Chaushev, Alexander
AU - Casewell, Sarah L.
AU - Cooke, Benjamin F.
AU - Eigmüller, Philipp
AU - Gillen, Edward
AU - Goad, Michael R.
AU - Günther, Maximilian N.
AU - Hagelberg, Janis
AU - Jenkins, James S.
AU - Louden, Tom
AU - Marmier, Maxime
AU - McCormac, James
AU - Moyano, Maximiliano
AU - Pollacco, Don
AU - Raynard, Liam
AU - Tilbrook, Rosanna H.
AU - Udry, Stéphane
AU - Vines, Jose I.
AU - West, Richard G.
AU - Wheatley, Peter J.
AU - Ricker, George
AU - Vanderspek, Roland
AU - Latham, David W.
AU - Seager, Sara
AU - Winn, Josh
AU - Jenkins, Jon M.
AU - Addison, Brett
AU - Briceño, César
AU - Brahm, Rafael
AU - Caldwell, Douglas A.
AU - Doty, John
AU - Espinoza, Néstor
AU - Goeke, Bob
AU - Henning, Thomas
AU - Jordán, Andrés
AU - Krishnamurthy, Akshata
AU - Law, Nicholas
AU - Morris, Robert
AU - Okumura, Jack
AU - Mann, Andrew W.
AU - Rodriguez, Joseph E.
AU - Sarkis, Paula
AU - Schlieder, Joshua
AU - Twicken, Joseph D.
AU - Villanueva, Steven
AU - Wittenmyer, Robert A.
AU - Wright, Duncan J.
AU - Ziegler, Carl
N1 - Funding Information: We thank the Swiss National Science Foundation (SNSF) and the Geneva University for their continuous support to our planet search programs. Contributions at the University of Geneva by FB, LN, ML, OT, and SU were carried out within the framework of the National Centre for Competence in Research ‘PlanetS’ supported by the SNSF. Based on data collected under the NGTS project at the ESO La Silla Paranal Observatory. The NGTS facility is operated by the consortium institutes with support from the UK Science and Technology Facilities Council (STFC) under projects ST/M001962/1 and ST/S002642/1. The contributions at the University of Warwick by PJW, RGW, DLP, DJA, and TL have been supported by STFC through consolidated grants ST/L000733/1 and ST/P000495/1. DJA acknowledges support from the STFC via an Ernest Rutherford Fellowship (ST/R00384X/1). The contributions at the University of Leicester by MGW and MRB have been supported by STFC through consolidated grant ST/N000757/1. CAW acknowledges support from the STFC grant ST/P000312/1. TL was also supported by STFC studentship 1226157. MNG acknowledges support from MIT’s Kavli Institute as a Torres postdoctoral fellow. ML acknowledges support from the Austrian Research Promotion Agency (FFG) under project 859724 ‘GRAPPA’. JSJ acknowledges support by Fondecyt grant 1161218 and partial support by CATA-Basal (PB06, CONICYT). JIV acknowledges support of CONICYT-PFCHA/Doctorado Nacional-21191829, Chile. RB acknowledges support from FONDECYT Post-doctoral Fellowship Project 3180246, and from the Millennium Institute of Astrophysics (MAS). AJ acknowledges support from FONDECYT project 1171208, and by the Ministry for the Economy, Development, and Tourism’s Programa Iniciativa Científica Milenio through grant IC 120009, awarded to the MAS. This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant 681601). The research leading to these results has received funding from the ERC under the European Union’s Seventh Framework Programme (FP/2007-2013)/ERC grant 320964 (WDTracer). MINERVA–Australis is supported by Australian Research Council LIEF grant LE160100001, Discovery grant DP180100972,Mount Cuba Astronomical Foundation, and institutional partners University of Southern Queensland, UNSW Australia, MIT, Nanjing University, George Mason University, University of Louisville, University of California Riverside, University of Florida, and The University of Texas at Austin. We respectfully acknowledge the traditional custodians of all lands throughout Australia, and recognize their continued cultural and spiritual connection to the land, waterways, cosmos, and community. We pay our deepest respects to all Elders, ancestors, and descendants of the Giabal, Jarowair, and Kambuwal nations, upon whose lands the Minerva–Australis facility at Mt Kent is situated. Funding for the TESS mission is provided by NASA’s Science Mission directorate. We acknowledge the use of public TESS Alert data from pipelines at the TESS Science Office and at the TESS Science Processing Operations Center. Resources supporting this work were provided by the NASA High-End Computing Program through the NASA Advanced Supercomputing Division at Ames Research Center for the production of the SPOC data products. Funding Information: We thank the Swiss National Science Foundation (SNSF) and the Geneva University for their continuous support to our planet search programs. Contributions at the University of Geneva by FB, LN, ML, OT, and SU were carried out within the framework of the National Centre for Competence in Research 'PlanetS' supported by the SNSF. Based on data collected under the NGTS project at the ESO La Silla Paranal Observatory. The NGTS facility is operated by the consortium institutes with support from the UK Science and Technology Facilities Council (STFC) under projects ST/M001962/1 and ST/S002642/1. The contributions at the University of Warwick by PJW, RGW, DLP, DJA, and TL have been supported by STFC through consolidated grants ST/L000733/1 and ST/P000495/1. DJA acknowledges support from the STFC via an Ernest Rutherford Fellowship (ST/R00384X/1). The contributions at the University of Leicester by MGW and MRB have been supported by STFC through consolidated grant ST/N000757/1. CAW acknowledges support from the STFC grant ST/P000312/1. TL was also supported by STFC studentship 1226157. MNG acknowledges support from MIT's Kavli Institute as a Torres postdoctoral fellow. ML acknowledges support from the Austrian Research Promotion Agency (FFG) under project 859724 'GRAPPA'. JSJ acknowledges support by Fondecyt grant 1161218 and partial support by CATA-Basal (PB06, CONICYT). JIV acknowledges support of CONICYT-PFCHA/Doctorado Nacional-21191829, Chile. RB acknowledges support from FONDECYT Post-doctoral Fellowship Project 3180246, and from the Millennium Institute of Astrophysics (MAS). AJ acknowledges support from FONDECYT project 1171208, and by the Ministry for the Economy, Development, and Tourism's Programa Iniciativa Cient?fica Milenio through grant IC 120009, awarded to the MAS. This project has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant 681601). The research leading to these results has received funding from the ERC under the European Union's Seventh Framework Programme (FP/2007-2013)/ERC grant 320964 (WDTracer). MINERVA-Australis is supported by Australian Research Council LIEF grant LE160100001, Discovery grant DP180100972,Mount Cuba Astronomical Foundation, and institutional partners University of Southern Queensland, UNSW Australia, MIT, Nanjing University, George Mason University, University of Louisville, University of California Riverside, University of Florida, and The University of Texas at Austin. We respectfully acknowledge the traditional custodians of all lands throughout Australia, and recognize their continued cultural and spiritual connection to the land, waterways, cosmos, and community. We pay our deepest respects to all Elders, ancestors, and descendants of the Giabal, Jarowair, and Kambuwal nations, upon whose lands the Minerva-Australis facility at Mt Kent is situated. Funding for the TESS mission is provided by NASA's Science Mission directorate. We acknowledge the use of public TESS Alert data from pipelines at the TESS Science Office and at the TESS Science Processing Operations Center. Resources supporting this work were provided by the NASA High-End Computing Program through the NASA Advanced Supercomputing Division at Ames Research Center for the production of the SPOC data products. Publisher Copyright: © 2019 The Author(s)
PY - 2020/2/1
Y1 - 2020/2/1
N2 - We report the period, eccentricity, and mass determination for the Transiting Exoplanet Survey Satellite (TESS) single-transit event candidate TOI-222, which displayed a single 3000 ppm transit in the TESS 2-min cadence data from Sector 2. We determine the orbital period via radial velocity measurements (P = 33.9 d), which allowed for ground-based photometric detection of two subsequent transits. Our data show that the companion to TOI-222 is a low-mass star, with a radius of 0.18+−003910 R☉ and a mass of 0.23 ± 0.01 M☉. This discovery showcases the ability to efficiently discover long-period systems from TESS single-transit events using a combination of radial velocity monitoring coupled with high-precision ground-based photometry.
AB - We report the period, eccentricity, and mass determination for the Transiting Exoplanet Survey Satellite (TESS) single-transit event candidate TOI-222, which displayed a single 3000 ppm transit in the TESS 2-min cadence data from Sector 2. We determine the orbital period via radial velocity measurements (P = 33.9 d), which allowed for ground-based photometric detection of two subsequent transits. Our data show that the companion to TOI-222 is a low-mass star, with a radius of 0.18+−003910 R☉ and a mass of 0.23 ± 0.01 M☉. This discovery showcases the ability to efficiently discover long-period systems from TESS single-transit events using a combination of radial velocity monitoring coupled with high-precision ground-based photometry.
KW - Planetary systems
KW - Stars: individual: TOI-222
KW - Techniques: photometric
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UR - http://www.scopus.com/inward/citedby.url?scp=85082719912&partnerID=8YFLogxK
U2 - 10.1093/mnras/stz3545
DO - 10.1093/mnras/stz3545
M3 - Article
AN - SCOPUS:85082719912
SN - 0035-8711
VL - 492
SP - 1761
EP - 1769
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 2
ER -