Article (Scientific journals)
The L 98-59 System: Three Transiting, Terrestrial-size Planets Orbiting a Nearby M Dwarf
Kostov, Veselin B.; Schlieder, Joshua E.; Barclay, Thomas et al.
2019In Astronomical Journal, 158
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Keywords :
planets and satellites: detection; stars: individual: TIC 307210830; TOI-175; techniques: photometric; Astrophysics - Earth and Planetary Astrophysics
Abstract :
[en] We report the Transiting Exoplanet Survey Satellite (TESS) discovery of three terrestrial-size planets transiting L 98-59 (TOI-175, TIC 307210830)—a bright M dwarf at a distance of 10.6 pc. Using the Gaia- measured distance and broadband photometry, we find that the host star is an M3 dwarf. Combined with the TESS transits from three sectors, the corresponding stellar parameters yield planet radii ranging from 0.8 R [SUB]⊕[/SUB] to 1.6 R [SUB]⊕[/SUB]. All three planets have short orbital periods, ranging from 2.25 to 7.45 days with the outer pair just wide of a 2:1 period resonance. Diagnostic tests produced by the TESS Data Validation Report and the vetting package DAVE rule out common false- positive sources. These analyses, along with dedicated follow-up and the multiplicity of the system, lend confidence that the observed signals are caused by planets transiting L 98-59 and are not associated with other sources in the field. The L 98-59 system is interesting for a number of reasons: the host star is bright (V = 11.7 mag, K = 7.1 mag) and the planets are prime targets for further follow-up observations including precision radial-velocity mass measurements and future transit spectroscopy with the James Webb Space Telescope; the near-resonant configuration makes the system a laboratory to study planetary system dynamical evolution; and three planets of relatively similar size in the same system present an opportunity to study terrestrial planets where other variables (age, metallicity, etc.) can be held constant. L 98-59 will be observed in four more TESS sectors, which will provide a wealth of information on the three currently known planets and have the potential to reveal additional planets in the system.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Kostov, Veselin B.;  NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA ; SETI Institute, 189 Bernardo Avenue, Suite 200, Mountain View, CA 94043, USA
Schlieder, Joshua E.;  NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
Barclay, Thomas;  NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA ; University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, MD 21250, USA
Quintana, Elisa V.;  NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
Colón, Knicole D.;  NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
Brande, Jonathan;  NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA ; University of Maryland, College Park, MD 20742, USA
Collins, Karen A.;  Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
Feinstein, Adina D.;  Department of Astronomy and Astrophysics, University of Chicago, 5640 S. Ellis Avenue, Chicago, IL 60637, USA
Hadden, Samuel;  Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
Kane, Stephen R.;  Department of Earth and Planetary Sciences, University of California, Riverside, CA 92521, USA
Kreidberg, Laura;  Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
Kruse, Ethan;  NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
Lam, Christopher;  NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
Matthews, Elisabeth;  Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
Montet, Benjamin T.;  Department of Astronomy and Astrophysics, University of Chicago, 5640 S. Ellis Avenue, Chicago, IL 60637, USA
Pozuelos Romero, Francisco José  ;  Space Sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, 19C Allée du 6 Août, B-4000 Liège, Belgium ; Astrobiology Research Unit, Université de Liège, 19C Allée du 6 Août, B-4000 Liège, Belgium
Stassun, Keivan G.;  Vanderbilt University, Nashville, TN 37240, USA
Winters, Jennifer G.;  Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
Ricker, George;  Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
Vanderspek, Roland;  Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
Latham, David;  Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
Seager, Sara;  Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA ; Department of Earth, Atmospheric and Planetary Sciences, MIT, Cambridge, MA 02139, USA ; Department of Aeronautics and Astronautics, MIT, Cambridge, MA 02139, USA
Winn, Joshua;  Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544, USA
Jenkins, Jon M.;  NASA Ames Research Center, Moffett Field, CA 94035, USA
Afanasev, Dennis;  George Washington University, 2121 I Street NW, Washington, DC 20052, USA
Armstrong, James J. D.;  University of Hawaii Institute for Astronomy, 34 Ohia Ku Street, Pukalani, HI 96768, USA
Arney, Giada;  NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
Boyd, Patricia;  NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
Barentsen, Geert;  Bay Area Environmental Research Institute, P.O. Box 25, Moffett Field, CA, USA
Barkaoui, Khalid;  Astrobiology Research Unit, Université de Liège, 19C Allée du 6 Août, B-4000 Liège, Belgium ; Oukaimeden Observatory, High Energy Physics and Astrophysics Laboratory, Cadi Ayyad University, Marrakech, Morocco
Batalha, Natalie E.;  Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA
Beichman, Charles;  NASA Exoplanet Science Institute and Infrared Processing and Analysis Center, California Institute of Technology, Jet Propulsion Laboratory, Pasadena, CA 91125, USA
Bayliss, Daniel;  Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
Burke, Christopher;  Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
Burdanov, Artem ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Exotic
Cacciapuoti, Luca;  Department of Physics “Ettore Pancini,” Universita di Napoli Federico II, Compl. Univ. Monte S. Angelo, I-80126 Napoli, Italy
Carson, Andrew;  NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
Charbonneau, David;  Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
Christiansen, Jessie;  NASA Exoplanet Science Institute, California Institute of Technology, M/S 100-22, Pasadena, CA 91125, USA
Ciardi, David;  NASA Exoplanet Science Institute, California Institute of Technology, M/S 100-22, Pasadena, CA 91125, USA
Clampin, Mark;  NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
Collins, Kevin I.;  Department of Physics and Astronomy, Vanderbilt University, Nashville, TN 37235, USA
Conti, Dennis M.;  American Association of Variable Star Observers, 49 Bay State Road, Cambridge, MA 02138, USA
Coughlin, Jeffrey;  SETI Institute, 189 Bernardo Avenue, Suite 200, Mountain View, CA 94043, USA
Covone, Giovanni;  Department of Physics “Ettore Pancini,” Universita di Napoli Federico II, Compl. Univ. Monte S. Angelo, I-80126 Napoli, Italy
Crossfield, Ian;  Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
Delrez, Laetitia ;  University of Cambridge > Cavendish Laboratory
Domagal-Goldman, Shawn;  NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
Dressing, Courtney;  Department of Astronomy, University of California at Berkeley Berkeley, CA 94720, USA
Ducrot, Elsa ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Exotic
Essack, Zahra;  Department of Earth, Atmospheric and Planetary Sciences, MIT, Cambridge, MA 02139, USA
Everett, Mark E.;  National Optical Astronomy Observatory, 950 North Cherry Avenue, Tucson, AZ 85719, USA
Fauchez, Thomas;  NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
Foreman-Mackey, Daniel;  Flatiron Institute, Center for Computational Astrophysics, New York, NY, USA
Gan, Tianjun;  Department of Physics and Tsinghua Centre for Astrophysics, Tsinghua University, Beijing, People’s Republic of China
Gilbert, Emily;  Department of Astronomy and Astrophysics, University of Chicago, 5640 S. Ellis Avenue, Chicago, IL 60637, USA
Gillon, Michaël  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Exotic
Gonzales, Erica;  Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA
Hamann, Aaron;  Department of Astronomy and Astrophysics, University of Chicago, 5640 S. Ellis Avenue, Chicago, IL 60637, USA
Hedges, Christina;  Bay Area Environmental Research Institute, P.O. Box 25, Moffett Field, CA, USA
Hocutt, Hannah;  Department of Physics, Southern Connecticut State University, 501 Crescent Street, New Haven, CT 06515, USA
Hoffman, Kelsey;  SETI Institute, 189 Bernardo Avenue, Suite 200, Mountain View, CA 94043, USA
Horch, Elliott P.;  Department of Physics, Southern Connecticut State University, 501 Crescent Street, New Haven, CT 06515, USA
Horne, Keith;  SUPA School of Physics & Astronomy, University of St Andrews, North Haugh, St Andrews, Scotland, UK
Howell, Steve;  NASA Ames Research Center, Moffett Field, CA 94035, USA
Hynes, Shane;  NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
Ireland, Michael;  Research School of Astronomy and Astrophysics, Australian National University, Canberra, ACT 2611, Australia
Irwin, Jonathan M.;  Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
Isopi, Giovanni;  Campo Catino Astronomical Observatory, Regione Lazio, Guarcino (FR), I-03010, Italy
Jensen, Eric L. N.;  Department of Physics and Astronomy, Swarthmore College, Swarthmore, PA 19081, USA
Jehin, Emmanuel  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa)
Kaltenegger, Lisa;  Carl Sagan Institute, Cornell University, Space Science Institute 312, 14850 Ithaca, NY, USA
Kielkopf, John F.;  Department of Physics and Astronomy, University of Louisville, Louisville, KY 40292, USA
Kopparapu, Ravi;  NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
Lewis, Nikole;  Carl Sagan Institute, Cornell University, Space Science Institute 312, 14850 Ithaca, NY, USA
Lopez, Eric;  NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
Lissauer, Jack J.;  NASA Ames Research Center, Moffett Field, CA 94035, USA
Mann, Andrew W.;  Department of Physics and Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
Mallia, Franco;  Campo Catino Astronomical Observatory, Regione Lazio, Guarcino (FR), I-03010, Italy
Mandell, Avi;  NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
Matson, Rachel A.;  NASA Ames Research Center, Moffett Field, CA 94035, USA
Mazeh, Tsevi;  Tel Aviv University, P.O. Box 39040, Tel Aviv 6997801, Israel
Monsue, Teresa;  NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
Moran, Sarah E.;  Department of Earth and Planetary Sciences, Johns Hopkins University, Baltimore, MD 21218, USA
Moran, Vickie;  NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
Morley, Caroline V.;  Department of Astronomy, University of Texas at Austin, Austin, TX, USA
Morris, Brett;  University of Washington, Department of Astronomy, Seattle, WA 98195, USA
Muirhead, Philip;  Institute for Astrophysical Research, Boston University, Boston, MA 02215, USA
Mukai, Koji;  NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA ; University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, MD 21250, USA
Mullally, Susan;  Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
Mullally, Fergal;  SETI Institute, 189 Bernardo Avenue, Suite 200, Mountain View, CA 94043, USA
Murray, Catriona;  Cavendish Laboratory, JJ Thomson Avenue, Cambridge CB3 0HE, UK
Narita, Norio;  Department of Astronomy, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan ; Astrobiology Center, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan ; JST, PRESTO, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan ; National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan ; Instituto de Astrofisica de Canarias, E-38205 La Laguna, Tenerife, Spain
Palle, Enric;  Instituto de Astrofisica de Canarias, Via Lactea sn, E-38200, La Laguna, Tenerife, Spain
Pidhorodetska, Daria;  NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
Quinn, David;  NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
Relles, Howard;  Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
Rinehart, Stephen;  NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
Ritsko, Matthew;  NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
Rodriguez, Joseph E.;  Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
Rowden, Pamela;  School of Physical Sciences, The Open University, Milton Keynes MK7 6AA, UK
Rowe, Jason F.;  Bishops University, 2600 College Street, Sherbrooke, QC J1M 1Z7, Canada
Sebastian, Daniel ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Exotic
Sefako, Ramotholo;  South African Astronomical Observatory, P.O. Box 9, Observatory 7935, South Africa
Shahaf, Sahar;  Tel Aviv University, P.O. Box 39040, Tel Aviv 6997801, Israel
Shporer, Avi;  Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
Tañón Reyes, Naylynn;  NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA ; San Diego Mesa College, 7250 Mesa College Drive, San Diego, CA 92111, USA
Tenenbaum, Peter;  SETI Institute, 189 Bernardo Avenue, Suite 200, Mountain View, CA 94043, USA ; NASA Ames Research Center, Moffett Field, CA 94035, USA
Ting, Eric B.;  NASA Ames Research Center, Moffett Field, CA 94035, USA
Twicken, Joseph D.;  SETI Institute, 189 Bernardo Avenue, Suite 200, Mountain View, CA 94043, USA ; NASA Ames Research Center, Moffett Field, CA 94035, USA
van Belle, Gerard T.;  Lowell Observatory, 1400 W. Mars Hill Road, Flagstaff, AZ, USA
Vega, Laura;  NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
Volosin, Jeffrey;  NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
Walkowicz, Lucianne M.;  The Adler Planetarium, 1300 South Lakeshore Drive, Chicago, IL 60605, USA
Youngblood, Allison;  NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA)
More authors (105 more) Less
Language :
English
Title :
The L 98-59 System: Three Transiting, Terrestrial-size Planets Orbiting a Nearby M Dwarf
Publication date :
01 July 2019
Journal title :
Astronomical Journal
ISSN :
0004-6256
eISSN :
1538-3881
Publisher :
American Astronomical Society, United States
Volume :
158
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
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