Skip to content

Research at St Andrews

The L 98-59 system: three transiting, terrestrial-size planets orbiting a nearby M dwarf

Research output: Contribution to journalArticle

Author(s)

Veselin B. Kostov, Joshua E. Schlieder, Thomas Barclay, Elisa V. Quintana, Knicole D. Colon, Jonathan Brande, Karen A. Collins, Adina D. Feinstein, Samuel Hadden, Stephen R. Kane, Laura Kreidberg, Ethan Kruse, Christopher Lam, Elisabeth Matthews, Benjamin T. Montet, Francisco J. Pozuelos, Keivan G. Stassun, Jennifer G. Winters, George Ricker, Roland Vanderspek & 95 others David Latham, Sara Seager, Joshua Winn, Jon M. Jenkins, Dennis Afanasev, James J. D. Armstrong, Giada Arney, Patricia Boyd, Geert Barentsen, Khalid Barkaoui, Natalie E. Batalha, Charles Beichman, Daniel Bayliss, Christopher Burke, Artem Burdanov, Luca Cacciapuoti, Andrew Carson, David Charbonneau, Jessie Christiansen, David Ciardi, Mark Clampin, Kevin I. Collins, Dennis M. Conti, Jeffrey Coughlin, Giovanni Covone, Ian Crossfield, Laetitia Delrez, Shawn Domagal-Goldman, Courtney Dressing, Elsa Ducrot, Zahra Essack, Mark E. Everett, Thomas Fauchez, Daniel Foreman-Mackey, Tianjun Gan, Emily Gilbert, Michaël Gillon, Erica Gonzales, Aaron Hamann, Christina Hedges, Hannah Hocutt, Kelsey Hoffman, Elliott P. Horch, Keith Horne, Steve Howell, Shane Hynes, Michael Ireland, Jonathan M. Irwin, Giovanni Isopi, Eric L. N. Jensen, Emmanuel Jehin, Lisa Kaltenegger, John F. Kielkopf, Ravi Kopparapu, Nikole Lewis, Eric Lopez, Jack J. Lissauer, Andrew W. Mann, Franco Mallia, Avi Mandell, Rachel A. Matson, Tsevi Mazeh, Teresa Monsue, Sarah E. Moran, Vickie Moran, Caroline V. Morley, Brett Morris, Philip Muirhead, Koji Mukai, Susan Mullally, Fergal Mullally, Catriona Murray, Norio Narita, Enric Palle, Daria Pidhorodetska, David Quinn, Howard Relles, Stephen Rinehart, Matthew Ritsko, Joseph E. Rodriguez, Pamela Rowden, Jason F. Rowe, Daniel Sebastian, Ramotholo Sefako, Sahar Shahaf, Avi Shporer, Naylynn Tañón Reyes, Peter Tenenbaum, Eric B. Ting, Joseph D. Twicken, Gerard T. van Belle, Laura Vega, Jeffrey Volosin, Lucianne M. Walkowicz, Allison Youngblood

School/Research organisations

Abstract

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 ⊕ to 1.6 R ⊕. 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.
Close

Details

Original languageEnglish
Article number32
Number of pages25
JournalAstronomical Journal
Volume158
Issue number1
Early online date27 Jun 2019
DOIs
Publication statusPublished - Jul 2019

    Research areas

  • Planets and satellites: detection, Stars: individual (TIC 307210830, TOI-175), Techniques: photometric

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. ROME/REA: A Gravitational Microlensing Search for Exoplanets Beyondthe Snow Line on a Global Network of Robotic Telescopes

    Tsapras, Y., Street, R. A., Hundertmark, M., Bachelet, E., Dominik, M., Bozza, V., Cassan, A., Wambsganss, J., Horne, K. D., Mao, S., Zang, W., Bramich, D. M. & Saha, A., 11 Oct 2019, In : Publications of the Astronomical Society of the Pacific. 131, 12 p., 1244401.

    Research output: Contribution to journalArticle

  2. Two new HATNet hot Jupiters around A stars, and the first glimpse at the occurrence rate of hot Jupiters from TESS*

    Zhou, G., Huang, C. X., Bakos, G. Á., Hartman, J. D., Latham, D. W., Quinn, S. N., Collins, K. A., Winn, J. N., Wong, I., Kovács, G., Csubry, Z., Bhatti, W., Penev, K., Bieryla, A., Esquerdo, G. A., Berlind, P., Calkins, M. L., de Val-Borro, M., Noyes, R. W., Lázár, J. & 51 others, Papp, I., Sári, P., Kovács, T., Buchhave, L. A., Szklenar, T., Béky, B., Johnson, M. C., Cochran, W. D., Kniazev, A. Y., Stassun, K. G., Fulton, B. J., Shporer, A., Espinoza, N., Bayliss, D., Everett, M., Howell, S. B., Hellier, C., Anderson, D. R., Cameron, A. C., West, R. G., Brown, D. J. A., Schanche, N., Barkaoui, K., Pozuelos, F., Gillon, M., Jehin, E., Benkhaldoun, Z., Daassou, A., Ricker, G., Vanderspek, R., Seager, S., Jenkins, J. M., Lissauer, J. J., Armstrong, J. D., Collins, K. I., Gan, T., Hart, R., Horne, K., Kielkopf, J. F., Nielsen, L. D., Nishiumi, T., Narita, N., Palle, E., Relles, H. M., Sefako, R., Tan, T. G., Davies, M., Goeke, R. F., Guerrero, N., Haworth, K. & Villanueva, S., Oct 2019, In : Astronomical Journal. 158, 4, p. 1-24 24 p., 141.

    Research output: Contribution to journalArticle

  3. The Sloan Digital Sky Survey Reverberation Mapping Project: low-ionization broad-line widths and implications for virial black hole mass estimation

    Wang, S., Shen, Y., Jiang, L., Horne, K., Brandt, W. N., Grier, C. J., Ho, L. C., Homayouni, Y., Li, J. I-H., Schneider, D. P. & Trump, J. R., 1 Sep 2019, In : Astrophysical Journal. 882, 1, 14 p., 4.

    Research output: Contribution to journalArticle

  4. Do reverberation mapping analyses provide an accurate picture of the broad line region?

    Mangham, S. W., Knigge, C., Williams, P., Horne, K., Pancoast, A., Matthews, J. H., Long, K. S., Sim, S. A. & Higginbottom, N., Sep 2019, In : Monthly Notices of the Royal Astronomical Society. 488, 2, p. 2780-2799

    Research output: Contribution to journalArticle

  5. Space telescope and optical reverberation mapping project. VIII. Time variability of emission and absorption in NGC 5548 based on modeling the ultraviolet spectrum

    Kriss, G. A., De Rosa, G., Ely, J., Peterson, B. M., Kaastra, J., Mehdipour, M., Ferland, G. J., Dehghanian, M., Mathur, S., Edelson, R., Korista, K. T., Arav, N., Barth, A. J., Bentz, M. C., Brandt, W. N., Crenshaw, D. M., Bontà, E. D., Denney, K. D., Done, C., Eracleous, M. & 147 others, Fausnaugh, M. M., Gardner, E., Goad, M. R., Grier, C. J., Horne, K., Kochanek, C. S., McHardy, I. M., Netzer, H., Pancoast, A., Pei, L., Pogge, R. W., Proga, D., Silva, C., Tejos, N., Vestergaard, M., Adams, S. M., Anderson, M. D., Arévalo, P., Beatty, T. G., Behar, E., Bennert, V. N., Bianchi, S., Bigley, A., Bisogni, S., Boissay-Malaquin, R., Borman, G. A., Bottorff, M. C., Breeveld, A. A., Brotherton, M., Brown, J. E., Brown, J. S., Cackett, E. M., Canalizo, G., Cappi, M., Carini, M. T., Clubb, K. I., Comerford, J. M., Coker, C. T., Corsini, E. M., Costantini, E., Croft, S., Croxall, K. V., Deason, A. J., De Lorenzo-Cáceres, A., De Marco, B., Dietrich, M., Di Gesu, L., Ebrero, J., Evans, P. A., Filippenko, A. V., Flatland, K., Gates, E. L., Gehrels, N., Geier, S., Gelbord, J. M., Gonzalez, L., Gorjian, V., Grupe, D., Gupta, A., Hall, P. B., Henderson, C. B., Hicks, S., Holmbeck, E., Holoien, T. W-S., Hutchison, T. A., Im, M., Jensen, J. J., Johnson, C. A., Joner, M. D., Kaspi, S., Kelly, B. C., Kelly, P. L., Kennea, J. A., Kim, M., Kim, S. C., Kim, S. Y., King, A., Klimanov, S. A., Krongold, Y., Lau, M. W., Lee, J. C., Leonard, D. C., Li, M., Lira, P., Lochhaas, C., Ma, Z., MacInnis, F., Malkan, M. A., Manne-Nicholas, E. R., Matt, G., Mauerhan, J. C., McGurk, R., Montuori, C., Morelli, L., Mosquera, A., Mudd, D., Müller-Sánchez, F., Nazarov, S. V., Norris, R. P., Nousek, J. A., Nguyen, M. L., Ochner, P., Okhmat, D. N., Paltani, S., Parks, J. R., Pinto, C., Pizzella, A., Poleski, R., Ponti, G., Pott, J-U., Rafter, S. E., Rix, H-W., Runnoe, J., Saylor, D. A., Schimoia, J. S., Schnülle, K., Scott, B., Sergeev, S. G., Shappee, B. J., Shivvers, I., Siegel, M., Simonian, G. V., Siviero, A., Skielboe, A., Somers, G., Spencer, M., Starkey, D., Stevens, D. J., Sung, H-I., Tayar, J., Teems, K. G., Treu, T., Turner, C. S., Uttley, P., Van Saders, J. ., Vican, L., Villforth, C., Villanueva Jr., S., Walton, D. J., Waters, T., Weiss, Y., Woo, J-H., Yan, H., Yuk, H., Zheng, W., Zhu, W. & Zu, Y., 22 Aug 2019, In : Astrophysical Journal. 881, 2, 36 p., 153.

    Research output: Contribution to journalArticle

Related by journal

  1. Spitzer microlensing parallax for OGLE-2017-BLG-0896 reveals a counter-rotating low-mass brown dwarf

    Shvartzvald, Y., Yee, J. C., Skowron, J., Lee, C-U., Udalski, A., Calchi Novati, S., Bozza, V., Beichman, C. A., Bryden, G., Carey, S., Gaudi, B. S., Henderson, C. B., Zhu, W., Bachelet, E., Bolt, G., Christie, G., Maoz, D., Natusch, T., Pogge, R. W., Street, R. A. & 46 others, Tan, T-G., Tsapras, Y., Pietrukowicz, P., Soszyński, I., Szymański, M. K., Mróz, P., Poleski, R., Kozłowski, S., Ulaczyk, K., Pawlak, M., Rybicki, K. A., Iwanek, P., Albrow, M. D., Cha, S-M., Chung, S-J., Gould, A., Han, C., Hwang, K-H., Jung, Y. K., Kim, D-J., Kim, H-W., Kim, S-L., Lee, D-J., Lee, Y., Park, B-G., Ryu, Y-H., Shin, I-G., Zang, W., Dominik, M., Helling, C., Hundertmark, M., Jørgensen, U. G., Longa-Peña, P., Lowry, S., Sajadian, S., Burgdorf, M. J., Campbell-White, J., Ciceri, S., Evans, D. F., Fujii, Y. I., Hinse, T. C., Rahvar, S., Rabus, M., Skottfelt, J., Snodgrass, C. & Southworth, J., 11 Feb 2019, In : Astronomical Journal. 157, 3, p. 1-8 8 p., 106.

    Research output: Contribution to journalArticle

  2. A discrete set of possible transit ephemerides for two long-period gas giants orbiting HIP 41378

    Becker, J. C., Vanderburg, A., Rodriguez, J. E., Omohundro, M., Adams, F. C., Stassun, K. G., Yao, X., Hartman, J., Pepper, J., Bakos, G., Barentsen, G., Beatty, T. G., Bhatti, W., Chontos, A., Collier Cameron, A., Hellier, C., Huber, D., James, D., Kuhn, R. B., Lund, M. B. & 5 others, Pollacco, D., Siverd, R. J., Stevens, D. J., Cardoso, J. V. D. M. & West, R., Jan 2019, In : Astronomical Journal. 157, 1, 13 p., 19.

    Research output: Contribution to journalArticle

  3. Discovery of three new transiting hot Jupiters: WASP-161 b, WASP-163 b and WASP-170 b

    Barkaoui, K., Burdanov, A., Hellier, C., Gillon, M., Smalley, B., Maxted, P. F. L., Lendl, M., Triaud, A. H. M. J., Anderson, J., McCormac, J., Jehin, E., Almleaky, Y., Armstrong, D. J., Benkhaldoun, Z., Bouchy, F., Brown, D. J. A., Cameron, A. C., Daassou, A., Delrez, L., Ducrot, E. & 11 others, Foxell, E., Murray, C., Nielsen, L. D., Pepe, F., Pollacco, D., Pozuelos, F. J., Queloz, D., Segransan, D., Udry, S., Thompson, S. & West, R. G., Feb 2019, In : Astronomical Journal. 157, 2, 10 p., 43.

    Research output: Contribution to journalArticle

  4. K2-291b: a rocky super-Earth in a 2.2 day orbit

    Kosiarek, M. R., Blunt, S., Lopez-Morales, M., Crossfield, I. J. M., Sinukoff, E., Petigura, E. A., Gonzales, E. J., Poretti, E., Malavolta, L., Howard, A. W., Isaacson, H., Haywood, R. D., Ciardi, D. R., Bristow, M., Cameron, A. C., Charbonneau, D., Dressing, C. D., Figueird, P., Fulton, B. J., Hardee, B. J. & 26 others, Hirsch, L. A., Latham, D. W., Mortier, A., Nava, C., Schlieder, J. E., Vanderburg, A., Weiss, L., Bonomo, A. S., Bouchy, F., Buchhave, L. A., Coffinet, A., Damasso, M., Dumusque, X., Lovis, C., Mayor, M., Micela, G., Molinari, E., Pepe, F., Phillips, D., Piotto, G., Rice, K., Sasselov, D., Segransan, D., Sozzetti, A., Udry, S. & Watson, C., 13 Feb 2019, In : Astronomical Journal. 157, 3, 10 p., 116.

    Research output: Contribution to journalArticle

  5. OGLE-2018-BLG-0022: a nearby M-dwarf binary

    Street, R. A., Bachelet, E., Tsapras, Y., Hundertmark, M. P. G., Bozza, V., Dominik, M., Bramich, D. M., Cassan, A., Horne, K., Mao, S., Saha, A., Wambsganss, J., Zang, W., Jørgensen, U. G., Longa-Peña, P., Peixinho, N., Sajadian, S., Burgdorf, M. J., Campbell-White, J., Dib, S. & 11 others, Evans, D. F., Fujii, Y. I., Hinse, T. C., Khalouei, E., Lowry, S., Rahvar, S., Rabus, M., Skottfelt, J., Snodgrass, C., Southworth, J. & Tregloan-Reed, J., Jun 2019, In : Astronomical Journal. 157, 6, 11 p., 215.

    Research output: Contribution to journalArticle

ID: 259578439

Top