The CARMENES search for exoplanets around M dwarfs : the He I triplet at 10830 Å across the M dwarf sequence
dc.contributor.author | Fuhrmeister, B. | |
dc.contributor.author | Czesla, S. | |
dc.contributor.author | Hildebrandt, L. | |
dc.contributor.author | Montes Gutiérrez, David | |
dc.contributor.author | Diez-Alonso, E. | |
dc.date.accessioned | 2023-10-20T18:25:57Z | |
dc.date.available | 2023-10-20T18:25:57Z | |
dc.date.issued | 2019-11-25 | |
dc.description | Artículo firmado por 27 autores | |
dc.description.abstract | The He I infrared (IR) triplet at 10 830 Å is an important activity indicator for the Sun and in solar-type stars, however, it has rarely been studied in relation to M dwarfs to date. In this study, we use the time-averaged spectra of 319 single stars with spectral types ranging from M0.0 V to M9.0 V obtained with the CARMENES high resolution optical and near-infrared spectrograph at Calar Alto to study the properties of the He I IR triplet lines. In quiescence, we find the triplet in absorption with a decrease of the measured pseudo equivalent width (pEW) towards later sub-types. For stars later than M5.0 V, the He I triplet becomes undetectable in our study. This dependence on effective temperature may be related to a change in chromospheric conditions along the M dwarf sequence. When an emission in the triplet is observed, we attribute it to flaring. The absence of emission during quiescence is consistent with line formation by photo-ionisation and recombination, while flare emission may be caused by collisions within dense material. The He I triplet tends to increase in depth according to increasing activity levels, ultimately becoming filled in; however, we do not find a correlation between the pEW(He IR) and X-ray properties. This behaviour may be attributed to the absence of very inactive stars (L_X∕L_bol < −5.5) in our sample or to the complex behaviour with regard to increasing depth and filling in. | |
dc.description.department | Depto. de Física de la Tierra y Astrofísica | |
dc.description.faculty | Fac. de Ciencias Físicas | |
dc.description.faculty | Instituto de Física de Partículas y del Cosmos (IPARCOS) | |
dc.description.refereed | TRUE | |
dc.description.sponsorship | German Research Foundation (DFG) | |
dc.description.sponsorship | German Max-Planck-Gesellschaft (MPG) | |
dc.description.sponsorship | Consejo Superior de Investigaciones Cientificas (CSIC) | |
dc.description.sponsorship | European Union through FEDER/ERF | |
dc.description.sponsorship | Max-Planck-Institut fur Astronomie | |
dc.description.sponsorship | Instituto de Astrofisica de Andalucia | |
dc.description.sponsorship | Landessternwarte Konigstuhl | |
dc.description.sponsorship | Institut de Ciencies de l'Espai | |
dc.description.sponsorship | Institut fur Astro-physik Gottingen | |
dc.description.sponsorship | Universidad Complutense de Madrid | |
dc.description.sponsorship | Thuringer Landesstern-warte Tautenburg | |
dc.description.sponsorship | Instituto de Astrofisica de Canarias | |
dc.description.sponsorship | Hamburger Sternwarte | |
dc.description.sponsorship | Centro de Astrobiología | |
dc.description.sponsorship | Centro Astronómico Hispano-Alemán | |
dc.description.sponsorship | Ministerio de Economia y Competitividad (MINECO) | |
dc.description.sponsorship | German Science Foundation through the Major Research Instrumentation Programme | |
dc.description.sponsorship | Klaus Tschira Stiftung | |
dc.description.sponsorship | State of Baden-Wurttemberg | |
dc.description.sponsorship | Sstate of Niedersachsen | |
dc.description.sponsorship | Junta de Andalucía | |
dc.description.sponsorship | Centros de Excelencia Severo Ochoa | |
dc.description.sponsorship | Unidad de Excelencia María de Maeztu | |
dc.description.sponsorship | Generalitat de Catalunya/CERCA | |
dc.description.status | pub | |
dc.identifier.doi | 10.1051/0004-6361/201936193 | |
dc.identifier.essn | 1432-0746 | |
dc.identifier.issn | 0004-6361 | |
dc.identifier.officialurl | https://www.aanda.org/articles/aa/full_html/2019/12/aa36193-19/aa36193-19.html | |
dc.identifier.uri | https://hdl.handle.net/20.500.14352/88361 | |
dc.journal.title | Astronomy & Astrophysics | |
dc.language.iso | eng | |
dc.publisher | EDP Sciences | |
dc.relation.projectID | Schm 1032/69-1 | |
dc.relation.projectID | FOR2544 | |
dc.relation.projectID | FICTS-2011-02 | |
dc.relation.projectID | info:eu-repo/grantAgreement/MINECO//AYA2015-69350-C3-2-P/ES/ORIGEN Y EVOLUCION DE LAS ENANAS MARRONES Y PLANETAS GIGANTES/ | |
dc.relation.projectID | ESP2016-80435-C2-1-R | |
dc.relation.projectID | AYA2016-79425-C3-1/2/3-P | |
dc.relation.projectID | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ESP2017-87676-C5-1-R/ES/CONTRIBUCION ESPAÑOLA A LA MISION ESPACIAL PLATO2.0. FASES B2%2FC%2FD/ | |
dc.relation.projectID | info:eu-repo/grantAgreement/MINECO//SEV-2015-0548/ES/INSTITUTO DE ASTROFISICA DE CANARIAS/ | |
dc.relation.projectID | SEV-2017-0709 | |
dc.relation.projectID | MDM-20170737 | |
dc.rights.accessRights | open access | |
dc.subject.cdu | 52 | |
dc.subject.keyword | Stars: activity | |
dc.subject.keyword | Stars: chromospheres | |
dc.subject.keyword | Stars: lite-type | |
dc.subject.ucm | Astrofísica | |
dc.subject.unesco | 21 Astronomía y Astrofísica | |
dc.title | The CARMENES search for exoplanets around M dwarfs : the He I triplet at 10830 Å across the M dwarf sequence | |
dc.type | journal article | |
dc.type.hasVersion | VoR | |
dc.volume.number | 632 | |
dspace.entity.type | Publication | |
relation.isAuthorOfPublication | 2dfe4286-12c7-4d3a-bfda-d298a90cc8fe | |
relation.isAuthorOfPublication.latestForDiscovery | 2dfe4286-12c7-4d3a-bfda-d298a90cc8fe |
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