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TESS-Keck Survey. V. Twin Sub-Neptunes Transiting the Nearby G Star HD 63935
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| DOI | 10.3847/1538-3881/AC18CB | ||||
| Año | 2021 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
Abstract
We present the discovery of two nearly identically sized sub-Neptune transiting planets orbiting HD 63935, a bright (V = 8.6 mag), Sun-like (Teff = 5560 K) star at 49 pc. TESS identified the first planet, HD 63935 b (TOI- 509.01), in Sectors 7 and 34. We identified the second signal (HD 63935 c) in Keck High Resolution Echelle Spectrometer and Lick Automated Planet Finder radial velocity data as part of our follow-up campaign. It was subsequently confirmed with TESS photometry in Sector 34 as TOI-509.02. Our analysis of the photometric and radial velocity data yielded a robust detection of both planets with periods of 9.0600 ± 0.007 and 21.40 ± 0.0019 days, radii of 2.99 ± 0.14 and 2.90 ± 0.13 R?, and masses of 10.8 ± 1.8 and 11.1 ± 2.4 M?. We calculated densities for planets b and c consistent with a few percent of the planet mass in hydrogen/helium envelopes. We also describe our survey's efforts to choose the best targets for James Webb Space Telescope atmospheric followup. These efforts suggest that HD 63935 b has the most clearly visible atmosphere of its class. It is the best target for transmission spectroscopy (ranked by the transmission spectroscopy metric, a proxy for atmospheric observability) in the so far uncharacterized parameter space comprising sub-Neptune-sized (2.6 R? < Rp < 4 R?), moderately irradiated (100 F? < Fp < 1000 F?) planets around G stars. Planet c is also a viable target for transmission spectroscopy, and given the indistinguishable masses and radii of the two planets, the system serves as a natural laboratory for examining the processes that shape the evolution of sub-Neptune planets.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Scarsdale, Nicholas | Hombre |
University of California, Santa Cruz - Estados Unidos
Univ Calif Santa Cruz - Estados Unidos University of California, Santa Barbara - Estados Unidos |
| 2 | Murphy, Joseph M.A. | Hombre |
University of California, Santa Cruz - Estados Unidos
Univ Calif Santa Cruz - Estados Unidos University of California, Santa Barbara - Estados Unidos |
| 3 | Batalha, Natalie E. | Mujer |
University of California, Santa Cruz - Estados Unidos
Univ Calif Santa Cruz - Estados Unidos University of California, Santa Barbara - Estados Unidos |
| 4 | Pearce, Logan | Hombre |
University of Kansas - Estados Unidos
Harvard-Smithsonian Center for Astrophysics - Estados Unidos Ctr Astrophys Harvard & Smithsonian - Estados Unidos George Mason University - Estados Unidos |
| 5 | Dressing, Courtney D. | Mujer |
University of California, Berkeley - Estados Unidos
UNIV CALIF BERKELEY - Estados Unidos |
| 6 | Fulton, Benjamin | Hombre |
California Institute of Technology - Estados Unidos
CALTECH - Estados Unidos |
| 7 | Howard, Andrew W. | Hombre |
California Institute of Technology - Estados Unidos
CALTECH - Estados Unidos |
| 8 | Huber, Daniel | Hombre |
University Hawaii Institute for Astronomy - Estados Unidos
Univ Hawaii - Estados Unidos |
| 9 | Isaacson, Howard | Hombre |
University of California, Berkeley - Estados Unidos
University of Southern Queensland - Australia UNIV CALIF BERKELEY - Estados Unidos Univ Southern Queensland - Australia |
| 10 | Kane, Stephen R. | Hombre |
University of California, Riverside - Estados Unidos
Univ Calif Riverside - Estados Unidos |
| 11 | Petigura, Erik A. | Hombre |
University of California, Los Angeles - Estados Unidos
UNIV CALIF LOS ANGELES - Estados Unidos |
| 12 | Robertson, Paul | Hombre |
University of California, Irvine - Estados Unidos
Univ Calif Irvine - Estados Unidos University of California, Riverside - Estados Unidos |
| 13 | Roy, Arpita | Mujer |
Space Telescope Science Institute - Estados Unidos
Johns Hopkins University - Estados Unidos Space Telescope Sci Inst - Estados Unidos Johns Hopkins Univ - Estados Unidos |
| 14 | Weiss, Lauren M. | Mujer |
University Hawaii Institute for Astronomy - Estados Unidos
Univ Hawaii - Estados Unidos |
| 15 | Beard, Corey | Hombre |
University of California, Irvine - Estados Unidos
Univ Calif Irvine - Estados Unidos University of California, Riverside - Estados Unidos |
| 16 | Behmard, Aida | Mujer |
Division of Geological and Planetary Sciences - Estados Unidos
California Institute of Technology - Estados Unidos CALTECH - Estados Unidos |
| 17 | Chontos, Ashley | Mujer |
University Hawaii Institute for Astronomy - Estados Unidos
Univ Hawaii - Estados Unidos |
| 18 | Christiansen, Jessie | Mujer |
California Institute of Technology - Estados Unidos
CALTECH - Estados Unidos |
| 19 | Ciardi, David R. | Hombre |
California Institute of Technology - Estados Unidos
CALTECH - Estados Unidos |
| 20 | Claytor, Zachary R. | Hombre |
University Hawaii Institute for Astronomy - Estados Unidos
Univ Hawaii - Estados Unidos |
| 21 | Pearce, Logan | Hombre |
University of Kansas - Estados Unidos
Harvard-Smithsonian Center for Astrophysics - Estados Unidos Ctr Astrophys Harvard & Smithsonian - Estados Unidos George Mason University - Estados Unidos |
| 22 | Pearce, Logan | Hombre |
University of Kansas - Estados Unidos
Harvard-Smithsonian Center for Astrophysics - Estados Unidos Ctr Astrophys Harvard & Smithsonian - Estados Unidos George Mason University - Estados Unidos |
| 23 | Hart, R. | Hombre |
Division of Geological and Planetary Sciences - Estados Unidos
California Institute of Technology - Estados Unidos Princeton University - Estados Unidos Princeton Univ - Estados Unidos |
| 24 | Dalba, Paul A. | Hombre |
University of California, Riverside - Estados Unidos
Univ Calif Riverside - Estados Unidos |
| 25 | Dragomir, D. | Mujer |
The University of New Mexico - Estados Unidos
UNIV NEW MEXICO - Estados Unidos |
| 26 | Fetherolf, Tara | Mujer |
University of California, Riverside - Estados Unidos
Univ Calif Riverside - Estados Unidos |
| 27 | Fukui, Akihiko | Hombre |
The University of Tokyo - Japón
Instituto Astrofisico de Canarias - España Univ Tokyo - Japón Inst Astrofis Canarias IAC - España |
| 28 | Giacalone, Steven | Hombre |
University of California, Berkeley - Estados Unidos
UNIV CALIF BERKELEY - Estados Unidos |
| 29 | Gonzales, Erica | Mujer |
University of California, Santa Cruz - Estados Unidos
Univ Calif Santa Cruz - Estados Unidos University of California, Santa Barbara - Estados Unidos |
| 30 | Hill, Michelle L. | Mujer |
University of California, Riverside - Estados Unidos
Univ Calif Riverside - Estados Unidos |
| 31 | Hirsch, Lea A. | Mujer |
Stanford University - Estados Unidos
Universidad de Stanford - Estados Unidos |
| 32 | Jensen, Eric L. N. | Hombre |
Swarthmore College - Estados Unidos
Swarthmore Coll - Estados Unidos |
| 33 | Kosiarek, Molly R. | Mujer |
University of California, Santa Cruz - Estados Unidos
Univ Calif Santa Cruz - Estados Unidos University of California, Santa Barbara - Estados Unidos |
| 34 | De Leon, Jerome P. | Hombre |
The University of Tokyo - Japón
NASA Goddard Space Flight Center - Estados Unidos Univ Tokyo - Japón NASA Goddard Space Flight Ctr - Estados Unidos |
| 35 | Polanski, Alex S. | Hombre |
University of California, Irvine - Estados Unidos
|
| 36 | Lund, Michael B. | Hombre |
California Institute of Technology - Estados Unidos
CALTECH - Estados Unidos |
| 37 | Luque, R. | Hombre |
Instituto de Astrofísica de Andalucía - CSIC - España
Inst Astrofis Andalucia IAA CSIC - España CSIC - Instituto de Astrofísica de Andalucía (IAA) - España |
| 38 | Mayo, Andrew W. | Hombre |
University of California, Berkeley - Estados Unidos
Statens Naturhistoriske Museum - Dinamarca Univ Copenhagen - Dinamarca UNIV CALIF BERKELEY - Estados Unidos |
| 39 | Mocnik, Teo | - |
Gemini Observatory - Estados Unidos
NSF - Estados Unidos NOIRLab - Estados Unidos |
| 40 | Mori, M. | Mujer |
The University of Tokyo - Japón
Univ Tokyo - Japón |
| 41 | Narita, Norio | Hombre |
The University of Tokyo - Japón
Instituto Astrofisico de Canarias - España Japan Science and Technology Agency - Japón National Institutes of Natural Sciences - AstroBiology Center - Japón Astrobiol Ctr - Japón Univ Tokyo - Japón Inst Astrofis Canarias IAC - España PRESTO - Japón |
| 42 | Nowak, Grzegorz | Hombre |
Instituto Astrofisico de Canarias - España
Universidad de La Laguna - España Inst Astrofis Canarias IAC - España Univ La Laguna ULL - España |
| 43 | Palle, Enric | Hombre |
Instituto Astrofisico de Canarias - España
Universidad de La Laguna - España Inst Astrofis Canarias IAC - España Univ La Laguna ULL - España |
| 44 | Rabus, M. | Hombre |
Universidad Católica de la Santísima Concepción - Chile
Las Cumbres Observatory Global Telescope Network, Inc - Estados Unidos University of California, Santa Barbara - Estados Unidos Cumbres Observ Global Telescope Network - Estados Unidos |
| 45 | Rosenthal, Lee | Hombre |
California Institute of Technology - Estados Unidos
CALTECH - Estados Unidos |
| 46 | Rubenzahl, Ryan A. | Hombre |
California Institute of Technology - Estados Unidos
CALTECH - Estados Unidos |
| 47 | De Leon, Jerome P. | Hombre |
The University of Tokyo - Japón
NASA Goddard Space Flight Center - Estados Unidos Univ Tokyo - Japón NASA Goddard Space Flight Ctr - Estados Unidos |
| 48 | Shporer, Avi | - |
MIT Kavli Institute for Astrophysics and Space Research - Estados Unidos
Massachusetts Institute of Technology - Estados Unidos MIT - Estados Unidos |
| 49 | Stassun, Keivan | - |
Vanderbilt University - Estados Unidos
Vanderbilt Univ - Estados Unidos |
| 50 | Twicken, Joseph D. | Hombre |
NASA Ames Research Center - Estados Unidos
SETI Institute - Estados Unidos SETI Inst - Estados Unidos NASA - Estados Unidos |
| 51 | Wang, Gavin | Hombre |
Tsinghua International School - China
Tsinghua Int Sch - China |
| 52 | Yahalomi, Daniel A. | Hombre |
Columbia University - Estados Unidos
Columbia Univ - Estados Unidos |
| 53 | JENKINS, JAMES STEWART | Hombre |
NASA Ames Research Center - Estados Unidos
NASA - Estados Unidos |
| 54 | Latham, David W. | Hombre |
Harvard-Smithsonian Center for Astrophysics - Estados Unidos
Ctr Astrophys Harvard & Smithsonian - Estados Unidos |
| 55 | Ricker, George R. | Hombre |
MIT Kavli Institute for Astrophysics and Space Research - Estados Unidos
Massachusetts Institute of Technology - Estados Unidos MIT - Estados Unidos |
| 56 | Stalport, M. | Hombre |
MIT Kavli Institute for Astrophysics and Space Research - Estados Unidos
Massachusetts Institute of Technology - Estados Unidos MIT - Estados Unidos MIT School of Engineering - Estados Unidos |
| 57 | Vanderspek, R. | Hombre |
MIT Kavli Institute for Astrophysics and Space Research - Estados Unidos
Massachusetts Institute of Technology - Estados Unidos MIT - Estados Unidos |
| 58 | Hart, R. | Hombre |
Division of Geological and Planetary Sciences - Estados Unidos
California Institute of Technology - Estados Unidos Princeton University - Estados Unidos Princeton Univ - Estados Unidos |
| Fuente |
|---|
| JSPS KAKENHI |
| NASA |
| JST PRESTO |
| JSPS |
| NASA's Science Mission directorate |
| Fundacion Galileo Galilei of Istituto Nazionale di Astrofisica at the Spanish Observatorio del Roque de los Muchachos of Instituto de Astrofisica de Canarias |
| Agradecimiento |
|---|
| This paper is based on data collected by the TESS mission. Funding for the TESS mission is provided by NASA's Science Mission Directorate. We acknowledge the use of public TESS data from pipelines at the TESS Science Office and at the TESS SPOC. This research has made use of the Exoplanet Follow-up Observation Program website, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. Resources supporting this work were provided by the NASA High-end Computing Program through the NASA Advanced Supercomputing Division at Ames Research Center for the production of the SPOC data products. This paper includes data collected by the TESS mission that are publicly available from MAST. This research has made use of the NASA Exoplanet Archive and Exoplanet Follow-up Observation Program website, which are operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. Based on observations made with the Italian TNG operated on the island of La Palma by Fundacion Galileo Galilei of Istituto Nazionale di Astrofisica at the Spanish Observatorio del Roque de los Muchachos of Instituto de Astrofisica de Canarias under programs CAT19A_162 and CAT19A_96. This work has made use of data from the European Space Agency mission Gaia (https://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, https://www.cosmos.esa.int/web/gaia/dpac/consortium).Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. This work is partly supported by JSPS KAKENHI grant Nos. JP17H04574 and JP18H05439, JST PRESTO grant No. JPMJPR1775, and a Grant-in-aid for JSPS Fellows, No. JP20J21872. This work makes use of observations from the LCOGT Network. |
| This paper is based on data collected by the TESS mission. Funding for the TESS mission is provided by NASA's Science Mission Directorate. We acknowledge the use of public TESS data from pipelines at the TESS Science Office and at the TESS SPOC. This research has made use of the Exoplanet Follow-up Observation Program website, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. Resources supporting this work were provided by the NASA High-end Computing Program through the NASA Advanced Supercomputing Division at Ames Research Center for the production of the SPOC data products. This paper includes data collected by the TESS mission that are publicly available from MAST. This research has made use of the NASA Exoplanet Archive and Exoplanet Follow-up Observation Program website, which are operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. Based on observations made with the Italian TNG operated on the island of La Palma by Fundacion Galileo Galilei of Istituto Nazionale di Astrofisica at the Spanish Observatorio del Roque de los Muchachos of Instituto de Astrofisica de Canarias under programs CAT19A_162 and CAT19A_96. This work has made use of data from the European Space Agency mission Gaia (https://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, https://www.cosmos.esa.int/web/gaia/dpac/consortium).Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. This work is partly supported by JSPS KAKENHI grant Nos. JP17H04574 and JP18H05439, JST PRESTO grant No. JPMJPR1775, and a Grant-in-aid for JSPS Fellows, No. JP20J21872. This work makes use of observations from the LCOGT Network. |
