K2-295 b and K2-237 b: Two Transiting Hot Jupiters

• Autorzy: Smith A. M. S. , Csizmadia Sz. , Gandolfi D. , Albrecht S. , Alonso R. , Barragán O. , Cabrera J. , Cochran W. D. , Dai F. , Deeg H. , Eigmüller Ph. , Endl M. , Erikson A. , Fridlund M. , Fukui A. , Grziwa S. , Guenther E. W. , Hatzes A. P. , Hidalgo D. , Hirano T. , Korth J. , Kuzuhara M. , Livingston J. , Narita N. , Nespral D. , Niraula P. , Nowak G. , Palle E. , Pätzold M. , Persson C. M. , Prieto-Arranz J. , Rauer H. , Redfield S. , Ribas I. , Van Eylen V.

Identyfikatory

DOI

10.32023/0001-5237/69.2.3

• Języki publikacji: EN

Abstrakty

EN

We report the discovery from K2 of two transiting hot Jupiter systems. K2-295 (observed in Campaign 8) is a K5 dwarf which hosts a planet slightly smaller than Jupiter, orbiting with a period of 4.0 d. We have made an independent discovery of K2-237 b (Campaign 11), which orbits an F9 dwarf every 2.2 d and has an inflated radius 60-70% larger than that of Jupiter. We use high-precision radial velocity measurements, obtained using the HARPS and FIES spectrographs, to measure the planetary masses. We find that K2-295 b has a similar mass to Saturn, while K2-237 b is a little more massive than Jupiter.

Słowa kluczowe

EN

planetary systems; planets: detection; satellite detection; planets: individual: K2-295; satellites: individual: K2-295; planetes: individual: K2-237; satellites: individual: K2-237

• Wydawca: Copernicus Foundation for Polish Astronomy
• Czasopismo: Acta Astronomica
• Rocznik: 2019
• Tom: Vol. 69, No. 2
• Strony: 135--158
• Opis fizyczny: Bibliogr. 71 poz., rys., tab., wykr., zdj.

Twórcy

autor

Smith A. M. S.

• nstitute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489 Berlin, Germany

autor

Csizmadia Sz.

• Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489 Berlin, Germany

autor

Gandolfi D.

• Dipartimento di Fisica, Universitá di Torino, Via P. Giuria 1, I-10125, Torino, Italy

autor

Albrecht S.

• Stellar Astrophysics Centre, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark

autor

Alonso R.

• Instituto de Astrofísica de Canarias (IAC), 38205 La Laguna, Tenerife, Spain
• Departamento de Astrofísica, Universidad de La Laguna (ULL), 38206 La Laguna, Tenerife, Spain

autor

Barragán O.

• Dipartimento di Fisica, Universitá di Torino, Via P. Giuria 1, I-10125, Torino, Italy

autor

Cabrera J.

• Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489 Berlin, Germany

autor

Cochran W. D.

• Department of Astronomy and McDonald Observatory, University of Texas at Austin, 2515 Speedway, Stop C1400, Austin, TX 78712, USA

autor

Dai F.

• Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139,USA

autor

Deeg H.

• nstituto de Astrofísica de Canarias (IAC), 38205 La Laguna, Tenerife, Spain
• Departamento de Astrofísica, Universidad de La Laguna (ULL), 38206 La Laguna, Tenerife, Spain

autor

Eigmüller Ph.

• Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489 Berlin, Germany
• Leiden Observatory, Leiden University, 2333CA Leiden, The Netherlands

autor

Endl M.

• Department of Astronomy and McDonald Observatory, University of Texas at Austin, 2515 Speedway, Stop C1400, Austin, TX 78712, USA

autor

Erikson A.

• Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489 Berlin, Germany

autor

Fridlund M.

• Leiden Observatory, Leiden University, 2333CA Leiden, The Netherlands
• Chalmers University of Technology, Department of Space, Earth and Environment, Onsala Space Observatory, SE-439 92 Onsala, Sweden
• Instituto de Astrofísica de Canarias (IAC), 38205 La Laguna, Tenerife, Spain

autor

Fukui A.

• Subaru Telescope Okayama Branch Office, National Astronomical Observatory of Japan, NINS, 3037-5 Honjo, Kamogata, Asakuchi, Okayama 719-0232, Japan
• Instituto de Astrofísica de Canarias (IAC), 38205 La Laguna, Tenerife, Spain

autor

Grziwa S.

• Rheinisches Institut für Umweltforschung an der Universität zu Köln, Aachener Strasse 209, 50931 Köln, Germany

autor

Guenther E. W.

• Thüringer Landessternwarte Tautenburg, Sternwarte 5, 07778 Tautenburg, Germany

autor

Hatzes A. P.

• Thüringer Landessternwarte Tautenburg, Sternwarte 5, 07778 Tautenburg, Germany

autor

Hidalgo D.

• Instituto de Astrofísica de Canarias (IAC), 38205 La Laguna, Tenerife, Spain
• Departamento de Astrofísica, Universidad de La Laguna (ULL), 38206 La Laguna, Tenerife, Spain

autor

Hirano T.

• Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan

autor

Korth J.

• Rheinisches Institut für Umweltforschung an der Universität zu Köln, Aachener Strasse 209, 50931 Köln, Germany

autor

Kuzuhara M.

• Astrobiology Center, NINS, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
• National Astronomical Observatory of Japan, NINS, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan

autor

Livingston J.

• Department of Astronomy, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan

autor

Narita N.

• Department of Astronomy, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
• Astrobiology Center, NINS, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
• National Astronomical Observatory of Japan, NINS, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
• Instituto de Astrofísica de Canarias (IAC), 38205 La Laguna, Tenerife, Spain

autor

Nespral D.

• nstituto de Astrofísica de Canarias (IAC), 38205 La Laguna, Tenerife, Spain
• Departamento de Astrofísica, Universidad de La Laguna (ULL), 38206 La Laguna, Tenerife, Spain

autor

Niraula P.

• Astronomy Department and Van Vleck Observatory, Wesleyan University, Middletown, CT 06459, USA

autor

Nowak G.

• Instituto de Astrofísica de Canarias (IAC), 38205 La Laguna, Tenerife, Spain
• Departamento de Astrofísica, Universidad de La Laguna (ULL), 38206 La Laguna, Tenerife, Spain

autor

Palle E.

• Instituto de Astrofísica de Canarias (IAC), 38205 La Laguna, Tenerife, Spain
• Departamento de Astrofísica, Universidad de La Laguna (ULL), 38206 La Laguna, Tenerife, Spain

autor

Pätzold M.

• Rheinisches Institut für Umweltforschung an der Universität zu Köln, Aachener Strasse 209, 50931 Köln, Germany

autor

Persson C. M.

• Chalmers University of Technology, Department of Space, Earth and Environment, Onsala Space Observatory, SE-439 92 Onsala, Sweden

autor

Prieto-Arranz J.

• Instituto de Astrofísica de Canarias (IAC), 38205 La Laguna, Tenerife, Spain
• Departamento de Astrofísica, Universidad de La Laguna (ULL), 38206 La Laguna, Tenerife, Spain

autor

Rauer H.

• Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489 Berlin, Germany
• Center for Astronomy and Astrophysics, TU Berlin, Hardenbergstr. 36, 10623 Berlin, Germany
• Institute of Geological Sciences, Freie Universität Berlin, Malteserstr. 74-100, 12249 Berlin, Germany

autor

Redfield S.

• Astronomy Department and Van Vleck Observatory, Wesleyan University, Middletown, CT 06459, USA

autor

Ribas I.

• Institut de Ciéncies de l'Espai (ICE, CSIC), Campus UAB, Can Magrans s/n, 08193 Bellaterra, Spain
• Institut d'Estudis Espacials de Catalunya (IEEC), 08034 Barcelona, Spain

autor

Van Eylen V.

• Leiden Observatory, Leiden University, 2333CA Leiden, The Netherlands

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020)