elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

The Transiting Multi-planet System HD15337: Two Nearly Equal-mass Planets Straddling the Radius Gap

Gandolfi, Davide and Fossati, Luca and Livingston, John H. and Stassun, Keivan G. and Grziwa, Sascha and Barragan, Oscar and Fridlund, Malcolm and Kubyshkina, Daria and Persson, Carina M. and Dai, Fei and Lam, Kristine W. F. and Albrecht, Simon and Batalha, Natalie and Beck, Paul G. and Justesen, Anders Bo and Cabrera Perez, Juan and Cartwright, Scott and Cochran, William D. and Csizmadia, Szilard and Davies, Misty D. and Deeg, Hans J. and Eigmüller, Philipp and Endl, Michael and Erikson, A and Esposito, Massimiliano and Garcia, Rafael A. and Goeke, Robert and Gonzalez-Cuesta, Lucia and Guenther, Eike W. and Hatzes, Artie P. and Hidalgo, Diego and Hirano, Teruyuki and Hjorth, Maria and Kabath, Petr and Knudstrup, Emil and Korth, Judith and Li, Jie and Luque, Rafael and Mathur, Savita and Montanes Rodriguez, Pilar and Narita, Norio and Nespral, David and Niraula, Prajwal and Nowak, Grzegorz and Palle, Enric and Pätzold, Martin and Prieto-Arranz, Jorge and Rauer, H and Redfield, Seth and Ribas, Ignasi and Skarka, Marek and Smith, Alexis and Rowden, Pamela and Torres, Guillermo and Van Eylen, Vincent and Vezie, Michael L. (2019) The Transiting Multi-planet System HD15337: Two Nearly Equal-mass Planets Straddling the Radius Gap. Astrophysical Journal Letters, 876, L24. Institute of Physics (IOP) Publishing. DOI: 10.3847/2041-8213/ab17d9 ISSN 2041-8205

[img] PDF - Registered users only - Postprint version (accepted manuscript)
10MB

Abstract

We report the discovery of a super-Earth and a sub-Neptune transiting the star HD 15337 (TOI-402, TIC 120896927), a bright (V = 9) K1 dwarf observed by the Transiting Exoplanet Survey Satellite (TESS) in Sectors 3 and 4. We combine the TESS photometry with archival High Accuracy Radial velocity Planet Searcher spectra to confirm the planetary nature of the transit signals and derive the masses of the two transiting planets. With an orbital period of 4.8 days, a mass of {7.51}-1.01+1.09 {M}\oplus and a radius of 1.64 ± 0.06 R ⊕, HD 15337 b joins the growing group of short-period super-Earths known to have a rocky terrestrial composition. The sub-Neptune HD 15337 c has an orbital period of 17.2 days, a mass of {8.11}-1.69+1.82 {{{M}}}\oplus , and a radius of 2.39 ± 0.12 R ⊕, suggesting that the planet might be surrounded by a thick atmospheric envelope. The two planets have similar masses and lie on opposite sides of the radius gap, and are thus an excellent testbed for planet formation and evolution theories. Assuming that HD 15337 c hosts a hydrogen-dominated envelope, we employ a recently developed planet atmospheric evolution algorithm in a Bayesian framework to estimate the history of the high-energy (extreme ultraviolet and X-ray) emission of the host star. We find that at an age of 150 Myr, the star possessed on average between 3.7 and 127 times the high-energy luminosity of the current Sun.

Item URL in elib:https://elib.dlr.de/127580/
Document Type:Article
Title:The Transiting Multi-planet System HD15337: Two Nearly Equal-mass Planets Straddling the Radius Gap
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Gandolfi, DavideDipartimento di Fisica, Universita degli Studi di Torino, via Pietro Giuria 1, I-10125, Torino, Italy ); 0000-0001-8627-9628UNSPECIFIED
Fossati, LucaSpace Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, A-8041 Graz, Austria 0000-0003-4426-9530UNSPECIFIED
Livingston, John H.Department of Astronomy, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan 0000-0002-4881-3620UNSPECIFIED
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 0000-0002-3481-9052UNSPECIFIED
Grziwa, SaschaRheinisches Institut fur Umweltforschung an der Universitat zu Koln, Aachener Strasse 209, D-50931 Koln, Germany 0000-0003-3370-4058UNSPECIFIED
Barragan, OscarOxford Astrophysics, Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, UKUNSPECIFIED
Fridlund, MalcolmDepartment of Space, Earth and Environment, Chalmers University of Technology, Onsala Space Observatory, SE-439 92 Onsala, Sweden ; Leiden Observatory, University of Leiden, PO Box 9513, 2300 RA, Leiden, The Netherlands 0000-0003-2180-9936UNSPECIFIED
Kubyshkina, DariaSpace Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, A-8041 Graz, Austria 0000-0001-9137-9818UNSPECIFIED
Persson, Carina M.Department of Space, Earth and Environment, Chalmers University of Technology, Onsala Space Observatory, SE-439 92 Onsala, SwedenUNSPECIFIED
Dai, FeiDepartment of Physics and Kavli Institute for Astrophysics and Space Research, MIT, Cambridge, MA 02139, USA ; Department of Astrophysical Sciences, Princeton University, 4 Ivy Lane, Princeton, NJ 08544, USAUNSPECIFIED
Lam, Kristine W. F.Center for Astronomy and Astrophysics, TU Berlin, Hardenbergstr. 36, D-10623 Berlin, GermanyUNSPECIFIED
Albrecht, SimonStellar Astrophysics Centre, Dep. of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, DenmarkUNSPECIFIED
Batalha, NatalieDepartment of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USAUNSPECIFIED
Beck, Paul G.Instituto de Astrofisica de Canarias, C/ Via Lactea s/n, E-38205 La Laguna, Spain ; Departamento de Astrofisica, Universidad de La Laguna, E-38206 La Laguna, SpainUNSPECIFIED
Justesen, Anders BoStellar Astrophysics Centre, Dep. of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, DenmarkUNSPECIFIED
Cabrera Perez, JuanJuan.Cabrera (at) dlr.deUNSPECIFIED
Cartwright, ScottProto-Logic LLC, 1718 Euclid Street NW, Washington, DC 20009, USAUNSPECIFIED
Cochran, William D.Department of Astronomy and McDonald Observatory, University of Texas at Austin, 2515 Speedway, Stop C1400, Austin, TX 78712, USA 0000-0001-9662-3496UNSPECIFIED
Csizmadia, Szilardszilard.csizmadia (at) dlr.deUNSPECIFIED
Davies, Misty D.NASA Ames Research Center, Moffett Field, CA 94035, USAUNSPECIFIED
Deeg, Hans J.Instituto de Astrofisica de Canarias, C/ Via Lactea s/n, E-38205 La Laguna, Spain ; Departamento de Astrofisica, Universidad de La Laguna, E-38206 La Laguna, Spain 0000-0003-0047-4241UNSPECIFIED
Eigmüller, PhilippPhilipp.Eigmueller (at) dlr.dehttps://orcid.org/0000-0003-4096-0594
Endl, MichaelDepartment of Astronomy and McDonald Observatory, University of Texas at Austin, 2515 Speedway, Stop C1400, Austin, TX 78712, USA 0000-0002-7714-6310UNSPECIFIED
Erikson, Aanders.erikson (at) dlr.deUNSPECIFIED
Esposito, MassimilianoThuringer Landessternwarte Tautenburg, Sternwarte 5, D-07778 Tautenberg, GermanyUNSPECIFIED
Garcia, Rafael A.Laboratoire AIM, CEA/DSM---CNRS---Univ. Paris Diderot - IRFU/SAp, Centre de Saclay, F-91191 Gif-sur-Yvette, FranceUNSPECIFIED
Goeke, RobertDepartment of Physics and Kavli Institute for Astrophysics and Space Research, MIT, Cambridge, MA 02139, USAUNSPECIFIED
Gonzalez-Cuesta, LuciaInstituto de Astrofisica de Canarias, C/ Via Lactea s/n, E-38205 La Laguna, Spain ; Departamento de Astrofisica, Universidad de La Laguna, E-38206 La Laguna, SpainUNSPECIFIED
Guenther, Eike W.Thuringer Landessternwarte Tautenburg, Sternwarte 5, D-07778 Tautenberg, GermanyUNSPECIFIED
Hatzes, Artie P.Thuringer Landessternwarte Tautenburg, Sternwarte 5, D-07778 Tautenberg, GermanyUNSPECIFIED
Hidalgo, DiegoInstituto de Astrofisica de Canarias, C/ Via Lactea s/n, E-38205 La Laguna, SpainUNSPECIFIED
Hirano, TeruyukiDepartment of Earth and Planetary Sciences, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan 0000-0003-3618-7535UNSPECIFIED
Hjorth, MariaStellar Astrophysics Centre, Dep. of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, DenmarkUNSPECIFIED
Kabath, PetrAstronomical Institute, Czech Academy of Sciences, Fricova 298, 25165, Ondrejov, Czech Republic 0000-0002-1623-5352UNSPECIFIED
Knudstrup, EmilStellar Astrophysics Centre, Dep. of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, DenmarkUNSPECIFIED
Korth, JudithRheinisches Institut fur Umweltforschung an der Universitat zu Koln, Aachener Strasse 209, D-50931 Koln, GermanyUNSPECIFIED
Li, JieAerospace Computing Inc./NASA Ames Research Center, Moffett Field, CA 94035, USAUNSPECIFIED
Luque, RafaelInstituto de Astrofisica de Canarias, C/ Via Lactea s/n, E-38205 La Laguna, Spain; Departamento de Astrofisica, Universidad de La Laguna, E-38206 La Laguna, SpainUNSPECIFIED
Mathur, SavitaInstituto de Astrofisica de Canarias, C/ Via Lactea s/n, E-38205 La Laguna, Spain; Departamento de Astrofisica, Universidad de La Laguna, E-38206 La Laguna, SpainUNSPECIFIED
Montanes Rodriguez, PilarInstituto de Astrofisica de Canarias, C/ Via Lactea s/n, E-38205 La Laguna, Spain; Departamento de Astrofisica, Universidad de La Laguna, E-38206 La Laguna, SpainUNSPECIFIED
Narita, NorioDepartment of Astronomy, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; Instituto de Astrofisica de Canarias, C/ Via Lactea s/n, E-38205 La Laguna, Spain; Astrobiology Center, NINS, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan ; NationUNSPECIFIED
Nespral, DavidInstituto de Astrofisica de Canarias, C/ Via Lactea s/n, E-38205 La Laguna, Spain; Departamento de Astrofisica, Universidad de La Laguna, E-38206 La Laguna, SpainUNSPECIFIED
Niraula, PrajwalDepartment of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA 0000-0002-8052-3893UNSPECIFIED
Nowak, GrzegorzInstituto de Astrofisica de Canarias, C/ Via Lactea s/n, E-38205 La Laguna, Spain; Departamento de Astrofisica, Universidad de La Laguna, E-38206 La Laguna, Spain 0000-0002-7031-7754UNSPECIFIED
Palle, EnricInstituto de Astrofisica de Canarias, C/ Via Lactea s/n, E-38205 La Laguna, Spain; Departamento de Astrofisica, Universidad de La Laguna, E-38206 La Laguna, SpainUNSPECIFIED
Pätzold, MartinRheinisches Institut fur Umweltforschung an der Universitat zu Köln, Aachener Strasse 209, D-50931 Koln, GermanyUNSPECIFIED
Prieto-Arranz, JorgeInstituto de Astrofisica de Canarias, C/ Via Lactea s/n, E-38205 La Laguna, Spain; Departamento de Astrofisica, Universidad de La Laguna, E-38206 La Laguna, SpainUNSPECIFIED
Rauer, Hheike.rauer (at) dlr.deUNSPECIFIED
Redfield, SethAstronomy Department and Van Vleck Observatory, Wesleyan University, Middletown, CT 06459, USA 0000-0003-3786-3486UNSPECIFIED
Ribas, IgnasiInstitut de Ciencies de l'Espai (ICE, CSIC), Campus UAB, C/ de Can Magrans s/n, E-08193 Bellaterra, Spain ; Institut d'Estudis Espacials de Catalunya (IEEC), C/ Gran Capita 2-4, E-08034 Barcelona, Spain 0000-0002-6689-0312UNSPECIFIED
Skarka, MarekAstronomical Institute, Czech Academy of Sciences, Fricova 298, 25165, Ondrejov, Czech Republic; Department of Theoretical Physics and Astrophysics, Masaryk University, Kotlarska 2, 61137 Brno, Czech Republic 0000-0002-7602-0046UNSPECIFIED
Smith, AlexisAlexis.Smith (at) dlr.deUNSPECIFIED
Rowden, PamelaSchool of Physical Sciences, The Open University, Walton Hall, Milton Keynes MK7 6AA, UKUNSPECIFIED
Torres, GuillermoCenter for Astrophysics | Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USAUNSPECIFIED
Van Eylen, VincentDepartment of Astrophysical Sciences, Princeton University, 4 Ivy Lane, Princeton, NJ 08544, USAUNSPECIFIED
Vezie, Michael L.Department of Physics and Kavli Institute for Astrophysics and Space Research, MIT, Cambridge, MA 02139, USA)UNSPECIFIED
Date:2019
Journal or Publication Title:Astrophysical Journal Letters
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:876
DOI :10.3847/2041-8213/ab17d9
Page Range:L24
Publisher:Institute of Physics (IOP) Publishing
ISSN:2041-8205
Status:Published
Keywords:planetary systems, planets and satellites: detection, planets and satellites: fundamental parameters, planets and satellites: individual: HD15337 b \amp c, stars: fundamental parameters
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Projekt COROT Beteiligung
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Extrasolar Planets and Atmospheres
Deposited By: Smith, Dr Alexis M S
Deposited On:14 Jun 2019 09:27
Last Modified:20 Jan 2020 11:08

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.