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dc.contributor.author | Orell-Miquel, J. | es_ES |
dc.contributor.author | Nowak, G. | es_ES |
dc.contributor.author | Murgas, F. | es_ES |
dc.contributor.author | Pallé, Enric | es_ES |
dc.contributor.author | Morello, G. | es_ES |
dc.contributor.author | Luque, R. | es_ES |
dc.contributor.author | Badenas-Agusti, Mariona | es_ES |
dc.contributor.author | Ribas, Ignasi | es_ES |
dc.contributor.author | Lafarga, M. | es_ES |
dc.contributor.author | Espinoza, Néstor | es_ES |
dc.contributor.author | Morales, Juan Carlos | es_ES |
dc.contributor.author | Zechmeister, Mathias | es_ES |
dc.contributor.author | Alqasim, A. | es_ES |
dc.contributor.author | Cochran, W.D. | es_ES |
dc.contributor.author | Gandolfi, D. | es_ES |
dc.contributor.author | Goffo, E. | es_ES |
dc.contributor.author | Kabath, P. | es_ES |
dc.contributor.author | Korth, J. | es_ES |
dc.contributor.author | Lam, K.W.F. | es_ES |
dc.contributor.author | Livingston, J. | es_ES |
dc.contributor.author | Muresan, A. | es_ES |
dc.contributor.author | Persson, C.M. | es_ES |
dc.contributor.author | Eylen, Vicent van | es_ES |
dc.date.accessioned | 2023-02-16T07:59:47Z | - |
dc.date.available | 2023-02-16T07:59:47Z | - |
dc.date.issued | 2023-01-04 | - |
dc.identifier.citation | Astronomy and Astrophysics 669: A40 (2023) | es_ES |
dc.identifier.issn | 0004-6361 | - |
dc.identifier.uri | http://hdl.handle.net/10261/289479 | - |
dc.description | This is an Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. | es_ES |
dc.description.abstract | HD 191939 (TOI-1339) is a nearby (d = 54 pc), bright (V = 9 mag), and inactive Sun-like star (G9 V) known to host a multi-planet transiting system. Ground-based spectroscopic observations confirmed the planetary nature of the three transiting sub-Neptunes (HD 191939 b, c, and d) originally detected by TESS and were used to measure the masses for planets b and c with 3σ precision. These previous observations also reported the discovery of an additional Saturn-mass planet (HD 191939 e) and evidence for a further, very long-period companion (HD 191939 f). Here, we report the discovery of a new non-transiting planet in the system and a refined mass determination of HD 191939 d. The new planet, HD 191939 g, has a minimum mass of 13.5±2.0 M⊕ and a period of about 280 days. This period places the planet within the conservative habitable zone of the host star, and near a 1:3 resonance with HD 191939 e. The compilation of 362 radial velocity measurements with a baseline of 677 days from four different high-resolution spectrographs also allowed us to refine the properties of the previously known planets, including a 4.6σ mass determination for planet d, for which only a 2σ upper limit had been set until now. We confirm the previously suspected low density of HD 191939 d, which makes it an attractive target for attempting atmospheric characterisation. Overall, the planetary system consists of three sub-Neptunes interior to a Saturn-mass and a Uranus-mass planet plus a high-mass long-period companion. This particular configuration has no counterpart in the literature and makes HD 191939 an exceptional multi-planet transiting system with an unusual planet demographic worthy of future observation. | es_ES |
dc.description.sponsorship | This work was supported by the KESPRINT collaboration, an international consortium devoted to the characterization and research of exoplanets discovered with space-based missions (www.kesprint.science). CARMENES is an instrument at the Centro Astronómico Hispano-Alemán (CAHA) at Calar Alto (Almería, Spain), operated jointly by the Junta de Andalucía and the Instituto de Astrofísica de Andalucía (CSIC). CARMENES was funded by the Max-Planck-Gesellschaft (MPG), the Consejo Superior de Investigaciones Científicas (CSIC), the Ministerio de Economía y Competitividad (MINECO) and the European Regional Development Fund (ERDF) through projects FICTS-2011-02, ICTS-2017-07-CAHA-4, and CAHA16-CE-3978, and the members of the CARMENES Consortium (Max-Planck-Institut für Astronomie, Instituto de Astrofísica de Andalucía, Landessternwarte Königstuhl, Institut de Ciències de l’Espai, Institut für Astrophysik Göttingen, Universidad Complutense de Madrid, Thüringer Landessternwarte Tautenburg, Instituto de Astrofísica de Canarias, Hamburger Sternwarte, Centro de Astrobiología and Centro Astronómico Hispano-Alemán), with additional contributions by the MINECO, the Deutsche Forschungsgemeinschaft (DFG) through the Major Research Instrumentation Programme and Research Unit FOR2544 “Blue Planets around Red Stars”, the Klaus Tschira Stiftung, the states of Baden-Württemberg and Niedersachsen, and by the Junta de Andalucía. This is University of Texas Center for Planetary Systems Habitability contribution number 0058. This research has made use of data obtained from or tools provided by the portal exoplanet.eu of The Extrasolar Planets Encyclopaedia. G.M. has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska–Curie grant agreement no. 895525. J.K. gratefully acknowledges the support of the Swedish National Space Agency (SNSA; DNR 2020-00104). P.K. acknowledges the support from the grant LTT-20015. K.W.F.L. was supported by Deutsche Forschungsgemeinschaft grants RA714/14-1 within the DFG Schwerpunkt SPP 1992, Exploring the Diversity of Extrasolar Planets. C.M.P. gratefully acknowledges the support of the Swedish National Space Agency (DNR 65/19). The first author acknowledges the special support received by P. Conxa, P. Mercè, Jeroni, and Mercè. This work has made use of resources from AstroPiso collaboration. | es_ES |
dc.description.sponsorship | With funding from the Spanish government through the "Severo Ochoa Centre of Excellence" accreditation (CEX2021-001131-S). | es_ES |
dc.format | application/pdf | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | EDP Sciences | es_ES |
dc.relation | info:eu-repo/grantAgreement/AEI//CEX2021-001131-S | es_ES |
dc.relation | info:eu-repo/grantAgreement/EC/H2020/895525 | es_ES |
dc.relation.isversionof | Publisher's version | es_ES |
dc.rights | openAccess | es_ES |
dc.subject | Stars: individual: HD 191939 | es_ES |
dc.subject | Planets and satellites: individual: HD 191939 g | es_ES |
dc.subject | Techniques: photometric | es_ES |
dc.subject | Planets and satellites: individual: HD 191939 d | es_ES |
dc.subject | Techniques: radial velocities | es_ES |
dc.title | HD 191939 revisited: New and refined planet mass determinations, and a new planet in the habitable zone | es_ES |
dc.type | artículo | es_ES |
dc.identifier.doi | 10.1051/0004-6361/202244120 | - |
dc.description.peerreviewed | Peer reviewed | es_ES |
dc.relation.publisherversion | http://dx.doi.org/10.1051/0004-6361/202244120 | es_ES |
dc.identifier.e-issn | 1432-0746 | - |
dc.rights.license | https://creativecommons.org/licenses/by/4.0/ | es_ES |
dc.contributor.funder | Ministerio de Ciencia e Innovación (España) | es_ES |
dc.contributor.funder | European Commission | es_ES |
dc.contributor.funder | Consejo Superior de Investigaciones Científicas (España) | es_ES |
dc.contributor.funder | Max Planck Society | es_ES |
dc.contributor.funder | German Research Foundation | es_ES |
dc.contributor.funder | Agencia Estatal de Investigación (España) | es_ES |
dc.contributor.funder | Ministerio de Ciencia, Innovación y Universidades (España) | es_ES |
dc.relation.csic | Sí | es_ES |
oprm.item.hasRevision | no ko 0 false | * |
dc.identifier.funder | http://dx.doi.org/10.13039/501100000780 | es_ES |
dc.identifier.funder | http://dx.doi.org/10.13039/501100004837 | es_ES |
dc.identifier.funder | http://dx.doi.org/10.13039/501100003339 | es_ES |
dc.identifier.funder | http://dx.doi.org/10.13039/501100004189 | es_ES |
dc.identifier.funder | http://dx.doi.org/10.13039/501100011033 | es_ES |
dc.identifier.funder | http://dx.doi.org/10.13039/501100001659 | es_ES |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.openairetype | artículo | - |
Aparece en las colecciones: | (IAA) Artículos (ICE) Artículos |
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