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Hot planets around cool stars - two short-period mini-Neptunes transiting the late K-dwarf TOI-1260
Georgieva, I. Y. and Persson, C. M. and Barragán, O. and Nowak, G. and Fridlund, M. and Locci, D. and Palle, E. and Luque, R. and Carleo, I. and Gandolfi, D. and Kane, Stephen R. and Korth, J. and Stassun, Keivan G. and Livingston, J. and Matthews, E.C. and Collins, K. A. and Howell, Steve B. and Serrano, L.M. and Albrecht, S. and Bieryla, A. and Brasseur, C. E. and Ciardi, David R. and Cochran, W. D. and Colón, K.D. and Crossfield, Ian J. M. and Csizmadia, Szilard and Deeg, H. and Esposito, M. and Furlan, E. and Gan, T. and Goffo, E. and Gonzales, Erica J. and Grziwa, S. and Guenther, E. and Guerra, P. and Hirano, T. and Jenkins, J. M. and Jensen, E.L.N. and Kabath, P. and Knudstrup, E. and Lam, K. W. F. and Latham, D.W. and Levine, A. M. and Matson, R. A. and McDermid, Stuart and Osborne, H.L.M. and Paegert, M. and Quinn, S. N. and Redfield, Seth and Ricker, G. and Schlieder, J.E. and Scott, N.J. and Seager, S. and Smith, Alexis M S and Tenenbaum, P. and Twicken, Joseph D. and Vanderspek, Roland and Van Eylen, V. and Winn, J. N.
(2021)
Hot planets around cool stars - two short-period mini-Neptunes transiting the late K-dwarf TOI-1260.
Monthly Notices of the Royal Astronomical Society, 505 (4), pp. 4684-4701.
Oxford University Press.
doi: 10.1093/mnras/stab1464.
ISSN 0035-8711.
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Official URL: https://academic.oup.com/mnras/article/505/4/4684/6280967 AbstractWe present the discovery and characterization of two sub-Neptunes in close orbits, as well as a tentative outer planet of a similar size, orbiting TOI-1260 - a low metallicity K6 V dwarf star. Photometry from Transiting Exoplanet Survey Satellite(TESS) yields radii of Rb = 2.33 ± 0.10 and Rc = 2.82 ± 0.15 R⊕, and periods of 3.13 and 7.49 d for TOI-1260 b and TOI-1260 c, respectively. We combined the TESS data with a series of ground-based follow-up observations to characterize the planetary system. From HARPS-N high-precision radial velocities we obtain Mb = 8.6+1.4−1.5 and Mc = 11.8+3.4−3.2 M⊕. The star is moderately active with a complex activity pattern, which necessitated the use of Gaussian process regression for both the light-curve detrending and the radial velocity modelling, in the latter case guided by suitable activity indicators. We successfully disentangle the stellar-induced signal from the planetary signals, underlining the importance and usefulness of the Gaussian process approach. We test the system's stability against atmospheric photoevaporation and find that the TOI-1260 planets are classic examples of the structure and composition ambiguity typical for the 2-3 R⊕ range. | Item URL in elib: | https://elib.dlr.de/146466/ |
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| Document Type: | Article |
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| Title: | Hot planets around cool stars - two short-period mini-Neptunes transiting the late K-dwarf TOI-1260 |
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| Authors: | | Authors | Institution or Email of Authors | Author's ORCID iD | ORCID Put Code |
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| Georgieva, I. Y. | Department of Earth and Space Sciences, Chalmers University of Technology, Onsala Space Observatory, 439 92, Onsala, Sweden | UNSPECIFIED | UNSPECIFIED | | Persson, C. M. | Department of Earth and Space Sciences, Chalmers University of Technology, Onsala Space Observatory, 439 92, Onsala, Sweden | UNSPECIFIED | UNSPECIFIED | | Barragán, O. | Sub-department of Astrophysics, Department of Physics, Universityof Oxford, Oxford OX1 3RH, UK | UNSPECIFIED | UNSPECIFIED | | Nowak, G. | Instituto de Astrofisica de Canarias (IAC), 38205, La Laguna, Tenerife, Spain; Departamento de Astrofisica, Universidad de La Laguna, 38206, La Laguna, Tenerife, Spain | UNSPECIFIED | UNSPECIFIED | | Fridlund, M. | Department of Space, Earth and Environment, Chalmers University of Technology, Onsala Space Observatory, 439 92, Onsala, Sweden; Leiden Observatory, Leiden University, 2333CA, Leiden, The Netherlands | UNSPECIFIED | UNSPECIFIED | | Locci, D. | INAF – Osservatorio Astronomico di Palermo, Piazza del Parlamento 1,I-90134 Palermo, Italy | UNSPECIFIED | UNSPECIFIED | | Palle, E. | Instituto de Astrofisica de Canarias (IAC), 38205, La Laguna, Tenerife, Spain; Departamento de Astrofisica, Universidad de La Laguna, 38206, La Laguna, Tenerife, Spain | UNSPECIFIED | UNSPECIFIED | | Luque, R. | Departamento de Astrofísica, Universidad de La Laguna, E-38206, | UNSPECIFIED | UNSPECIFIED | | Carleo, I. | INAF - Osservatorio Astronomico di Padova, Vcolo dell'Osservatorio 5, 35122-Padova, Italy | UNSPECIFIED | UNSPECIFIED | | Gandolfi, D. | Dipartimento di Fisica, Universita di Torino, via P. Giuria 1, I-10125 Torino, Italy | UNSPECIFIED | UNSPECIFIED | | Kane, Stephen R. | Department of Earth and Planetary Sciences, University of California, Riverside, CA 92521, USA | UNSPECIFIED | UNSPECIFIED | | Korth, J. | Department of Space, Earth and Environment, Astronomy and PlasmaPhysics, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden | UNSPECIFIED | UNSPECIFIED | | Stassun, Keivan G. | Vanderbilt University, Department of Physics & Astronomy, 6301 Stevenson Center Lane, Nashville, TN 37235, US ; Fisk University, Department of Physics, 1000 17th Avenue North, Nashville, TN 37208, US 0000-0002-3481-9052 | UNSPECIFIED | UNSPECIFIED | | Livingston, J. | Department of Astronomy, The University of Tokyo, 7-3-1 Bunkyo-ku, Tokyo 113-0033, Japan | UNSPECIFIED | UNSPECIFIED | | Matthews, E.C. | Department of Physics and Kavli Institute for Astrophysics andSpace Research, Massachusetts Institute of Technology, Cambridge,MA 02139, USA | UNSPECIFIED | UNSPECIFIED | | Collins, K. A. | Center for Astrophysics|Harvard & Smithsonian, 60 Garden Street,Cambridge, MA 02138, USA | UNSPECIFIED | UNSPECIFIED | | Howell, Steve B. | NASA Ames Research Center, Moffett Field, CA 94035, USA | UNSPECIFIED | UNSPECIFIED | | Serrano, L.M. | Dipartimento di Fisica, Università degli Studi di Torino, via PietroGiuria 1, I-10125, Torino, Italy | UNSPECIFIED | UNSPECIFIED | | Albrecht, S. | Stellar Astrophysics Centre, Department of Physics and Astronomy, AarhusUniversity, Ny Munkegade 120, DK-8000 Aarhus C, Denmark | UNSPECIFIED | UNSPECIFIED | | Bieryla, A. | Harvard-Smithsonian Center for Astrophysics, 60 Garden St, Cambridge, MA 02138, USA | UNSPECIFIED | UNSPECIFIED | | Brasseur, C. E. | Space Telescope Science Institute, 3700 San Martin Dr, Baltimore, MD21218, USA | UNSPECIFIED | UNSPECIFIED | | Ciardi, David R. | NASA Exoplanet Science Institute, Caltech, Pasadena, CA, USA | UNSPECIFIED | UNSPECIFIED | | Cochran, W. D. | Department of Astronomy and McDonald Observatory, Universityof Texas at Austin, 2515 Speedway, Stop C1400, Austin, TX 78712,USA | UNSPECIFIED | UNSPECIFIED | | Colón, K.D. | Exoplanets and Stellar Astrophysics Laboratory, Mail Code 667,NASA Goddard Space Flight Center, 8800 Greenbelt Rd., Green-belt MD, 20771, USA | UNSPECIFIED | UNSPECIFIED | | Crossfield, Ian J. M. | Department of Physics and Astronomy, University of Kansas, Lawrence, KS 66045, USA | UNSPECIFIED | UNSPECIFIED | | Csizmadia, Szilard | UNSPECIFIED | UNSPECIFIED | UNSPECIFIED | | Deeg, H. | Instituto de Astrofisica de Canarias (IAC), Via Lactea s/n 38200, La Laguna, Spain | UNSPECIFIED | UNSPECIFIED | | Esposito, M. | Thüringer Landessternwarte Tautenburg, 07778, Tautenburg, Germany | UNSPECIFIED | UNSPECIFIED | | Furlan, E. | NASA Exoplanet Science Institute, Caltech/IPAC, Mail Code 100-22, 1200 E. California Blvd., Pasadena, CA 91125, USA | UNSPECIFIED | UNSPECIFIED | | Gan, T. | Department of Astronomy and Tsinghua Centre for Astrophysics, Tsinghua University, Beijing, 100084, PR China | UNSPECIFIED | UNSPECIFIED | | Goffo, E. | Dipartimento di Fisica, Università degli Studi di Torino, via PietroGiuria 1, I-10125, Torino, Italy | UNSPECIFIED | UNSPECIFIED | | Gonzales, Erica J. | Department of Astronomy and Astrophysics, University of California at Santa Cruz, Santa Cruz, CA, USA | UNSPECIFIED | UNSPECIFIED | | Grziwa, S. | Rheinisches Institut fuer Umweltforschung an der Universitaet zu Koeln, Aachener Strasse 209, 50931 Koeln, Germany | UNSPECIFIED | UNSPECIFIED | | Guenther, E. | Thueringer Landessternwarte Tautenburg, Sternwarte 5, D-07778 Tautenberg, Germany | UNSPECIFIED | UNSPECIFIED | | Guerra, P. | Observatori Astronómic Albanyá, Camí de Bassegoda s/n, Albanyá 17733, Girona, Spain | UNSPECIFIED | UNSPECIFIED | | Hirano, T. | Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8551, Japan | UNSPECIFIED | UNSPECIFIED | | Jenkins, J. M. | NASA Ames Research Center, Moffett Field, CA, 94035, USA | UNSPECIFIED | UNSPECIFIED | | Jensen, E.L.N. | Department of Physics & Astronomy, Swarthmore College,Swarthmore PA 19081, USA | UNSPECIFIED | UNSPECIFIED | | Kabath, P. | Astronomical Institute, Czech Academy of Sciences, Fricova 298, 25165, Ondrejov, Czech Republic | UNSPECIFIED | UNSPECIFIED | | Knudstrup, E. | Stellar Astrophysics Centre, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8000, Aarhus C, Denmark | UNSPECIFIED | UNSPECIFIED | | Lam, K. W. F. | DLR, Institute of Planetary Research, Dept. of Extrasolar Planets and Atmospheres, Berlin, D-12489, Rutherfordstrasse 2. | UNSPECIFIED | UNSPECIFIED | | Latham, D.W. | Center for Astrophysics ∣ Harvard & Smithsonian, 60 Garden Street, Cambridge, MA, 02138, USA | UNSPECIFIED | UNSPECIFIED | | Levine, A. M. | Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA | UNSPECIFIED | UNSPECIFIED | | Matson, R. A. | U.S. Naval Observatory, Washington, DC 20392, USA | UNSPECIFIED | UNSPECIFIED | | McDermid, Stuart | NASA-JPL | UNSPECIFIED | UNSPECIFIED | | Osborne, H.L.M. | Mullard Space Science Laboratory, University College London, HolmburySt Mary, Dorking, Surrey RH5 6NT, UK | UNSPECIFIED | UNSPECIFIED | | Paegert, M. | Center for Astrophysics|Harvard & Smithsonian, 60 Garden Street,Cambridge, MA 02138, USA | UNSPECIFIED | UNSPECIFIED | | Quinn, S. N. | Harvard-Smithsonian Center for Astrophysics, 60 Garden St, Cambridge, MA 02138, USA | UNSPECIFIED | UNSPECIFIED | | Redfield, Seth | Astronomy Department and Van Vleck Observatory, Wesleyan University, Middletown, CT 06459, USA 0000-0003-3786-3486 | UNSPECIFIED | UNSPECIFIED | | Ricker, G. | Department of Physics and Kavli Institute for Astrophysics and Space Research, MIT, Cambridge, MA, 02139, USA | UNSPECIFIED | UNSPECIFIED | | Schlieder, J.E. | Exoplanets and Stellar Astrophysics Laboratory, Mail Code 667,NASA Goddard Space Flight Center, 8800 Greenbelt Rd., Green-belt MD, 20771, USA | UNSPECIFIED | UNSPECIFIED | | Scott, N.J. | Space Science & Astrobiology Division, NASA Ames ResearchCenter, Moffett Field, CA 94035, USA | UNSPECIFIED | UNSPECIFIED | | Seager, S. | Department of Earth, Atmospheric and Planetary Sciences, MIT, Cambridge, MA, 02139, USA; Department of Aeronautics and Astronautics, MIT, Cambridge, MA, 0213 | UNSPECIFIED | UNSPECIFIED | | Smith, Alexis M S | UNSPECIFIED | https://orcid.org/0000-0002-2386-4341 | UNSPECIFIED | | Tenenbaum, P. | SETI Institute/NASA Ames Research Center, Moffet Field, CA 94035, USA | UNSPECIFIED | UNSPECIFIED | | Twicken, Joseph D. | NASA Ames Research Center, Moffett Field, CA 94035, USA; SETI Institute, 189 Bernardo Ave., Suite 200, Mountain View, CA 94043, USA | UNSPECIFIED | UNSPECIFIED | | Vanderspek, Roland | Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA, USA | UNSPECIFIED | UNSPECIFIED | | Van Eylen, V. | Mullard Space Science Laboratory, University College London, HolmburySt Mary, Dorking, Surrey RH5 6NT, UK | UNSPECIFIED | UNSPECIFIED | | Winn, J. N. | Department of Astrophysical Sciences, Princeton University, 4 Ivy Lane, Princeton, NJ, 08544, USA) | UNSPECIFIED | UNSPECIFIED |
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| Date: | October 2021 |
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| Journal or Publication Title: | Monthly Notices of the Royal Astronomical Society |
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| Refereed publication: | Yes |
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| Open Access: | Yes |
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| Gold Open Access: | No |
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| In SCOPUS: | Yes |
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| In ISI Web of Science: | Yes |
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| Volume: | 505 |
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| DOI: | 10.1093/mnras/stab1464 |
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| Page Range: | pp. 4684-4701 |
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| Publisher: | Oxford University Press |
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| ISSN: | 0035-8711 |
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| Status: | Published |
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| Keywords: | techniques: photometric; techniques: radial velocities; planets and satellites: atmospheres; planets and satellites: individual: TOI-1260b; c; planets and satellites: composition; stars: low-mass; planetary systems; Astrophysics - Earth and Planetary Astrophysics |
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| HGF - Research field: | Aeronautics, Space and Transport |
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| HGF - Program: | Space |
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| HGF - Program Themes: | Space Exploration |
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| DLR - Research area: | Raumfahrt |
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| DLR - Program: | R EW - Space Exploration |
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| DLR - Research theme (Project): | R - Project PLATO - PMC and Science |
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Location: |
Berlin-Adlershof
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| Institutes and Institutions: | Institute of Planetary Research > Extrasolar Planets and Atmospheres |
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| Deposited By: |
Csizmadia, Szilard
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| Deposited On: | 30 Nov 2021 10:24 |
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| Last Modified: | 27 Oct 2023 14:12 |
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