Afficher la notice abrégée

Gaia Data Release 3. Stellar chromospheric activity and mass accretion from Ca II IRT observed by the Radial Velocity Spectrometer

hal.structure.identifierINAF - Osservatorio Astrofisico di Catania [OACT]
dc.contributor.authorLANZAFAME, A. C.
hal.structure.identifierINAF - Osservatorio Astrofisico di Catania [OACT]
dc.contributor.authorBRUGALETTA, E.
hal.structure.identifierRoyal Observatory of Belgium = Observatoire Royal de Belgique [ROB]
dc.contributor.authorFRÉMAT, Y.
hal.structure.identifierINAF - Osservatorio Astronomico di Padova [OAPD]
dc.contributor.authorSORDO, R.
hal.structure.identifierJoseph Louis LAGRANGE [LAGRANGE]
dc.contributor.authorCREEVEY, O. L.
hal.structure.identifierINAF - Osservatorio Astronomico di Capodimonte [OAC]
dc.contributor.authorANDRETTA, V.
hal.structure.identifierINAF - Osservatorio Astrofisico di Catania [OACT]
dc.contributor.authorSCANDARIATO, G.
dc.contributor.authorBUSÀ, I.
dc.contributor.authorDISTEFANO, E.
hal.structure.identifierDepartment of Astronomy and Space Physics [Uppsala]
dc.contributor.authorKORN, A. J.
hal.structure.identifierJoseph Louis LAGRANGE [LAGRANGE]
dc.contributor.authorDE LAVERNY, P.
hal.structure.identifierJoseph Louis LAGRANGE [LAGRANGE]
dc.contributor.authorRECIO-BLANCO, A.
dc.contributor.authorARAMBURU, A. Abreu
hal.structure.identifierUniversidade da Coruña
dc.contributor.authorÁLVAREZ, M. A.
hal.structure.identifierMax Planck Institute for Astronomy [MPIA]
dc.contributor.authorANDRAE, R.
hal.structure.identifierMax Planck Institute for Astronomy [MPIA]
dc.contributor.authorBAILER-JONES, C. A. L.
dc.contributor.authorBAKKER, J.
hal.structure.identifierNational Observatory of Athens [NOA]
dc.contributor.authorBELLAS-VELIDIS, I.
hal.structure.identifierJoseph Louis LAGRANGE [LAGRANGE]
dc.contributor.authorBIJAOUI, A.
hal.structure.identifierFEMIS 2021
dc.contributor.authorBROUILLET, N.
dc.contributor.authorBURLACU, A.
dc.contributor.authorCARBALLO, R.
dc.contributor.authorCASAMIQUELA, L.
dc.contributor.authorCHAOUL, L.
dc.contributor.authorCHIAVASSA, A.
dc.contributor.authorCONTURSI, G.
dc.contributor.authorCOOPER, W. J.
dc.contributor.authorDAFONTE, C.
dc.contributor.authorDAPERGOLAS, A.
dc.contributor.authorDELCHAMBRE, L.
dc.contributor.authorDEMOUCHY, C.
dc.contributor.authorDHARMAWARDENA, T. E.
dc.contributor.authorDRIMMEL, R.
dc.contributor.authorEDVARDSSON, B.
dc.contributor.authorFOUESNEAU, M.
dc.contributor.authorGARABATO, D.
dc.contributor.authorGARCÍA-LARIO, P.
dc.contributor.authorGARCÍA-TORRES, M.
dc.contributor.authorGAVEL, A.
dc.contributor.authorGOMEZ, A.
dc.contributor.authorGONZÁLEZ-SANTAMARÍA, I.
dc.contributor.authorHATZIDIMITRIOU, D.
dc.contributor.authorHEITER, U.
dc.contributor.authorPICCOLO, A. Jean-Antoine
dc.contributor.authorKONTIZAS, M.
dc.contributor.authorKORDOPATIS, G.
hal.structure.identifierLaboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics [LESIA]
hal.structure.identifierInstitut de Physique de Rennes [IPR]
dc.contributor.authorLEBRETON, Y.
dc.contributor.authorLICATA, E. L.
dc.contributor.authorLINDSTRØM, H. E. P.
dc.contributor.authorLIVANOU, E.
dc.contributor.authorLOBEL, A.
dc.contributor.authorLORCA, A.
dc.contributor.authorROMEO, A. Magdaleno
dc.contributor.authorMANTEIGA, M.
dc.contributor.authorMAROCCO, F.
dc.contributor.authorMARSHALL, D. J.
dc.contributor.authorMARY, N.
hal.structure.identifierCentre National d'Études Spatiales [Toulouse] [CNES]
dc.contributor.authorNICOLAS, C.
dc.contributor.authorORDENOVIC, C.
hal.structure.identifierCentre National d'Études Spatiales [Toulouse] [CNES]
dc.contributor.authorPAILLER, F.
dc.contributor.authorPALICIO, P. A.
dc.contributor.authorPALLAS-QUINTELA, L.
dc.contributor.authorPANEM, C.
hal.structure.identifierJoseph Louis LAGRANGE [LAGRANGE]
dc.contributor.authorPICHON, B.
hal.structure.identifierJoseph Louis LAGRANGE [LAGRANGE]
dc.contributor.authorPOGGIO, E.
hal.structure.identifierCentre National d'Études Spatiales [Toulouse] [CNES]
dc.contributor.authorRICLET, F.
hal.structure.identifierThales Services
dc.contributor.authorROBIN, C.
dc.contributor.authorRYBIZKI, J.
dc.contributor.authorSANTOVEÑA, R.
dc.contributor.authorSARRO, L. M.
dc.contributor.authorSCHULTHEIS, M. S.
dc.contributor.authorSEGOL, M.
dc.contributor.authorSILVELO, A.
dc.contributor.authorSLEZAK, I.
dc.contributor.authorSMART, R. L.
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorSOUBIRAN, C.
dc.contributor.authorSÜVEGES, M.
hal.structure.identifierJoseph Louis LAGRANGE [LAGRANGE]
dc.contributor.authorTHÉVENIN, F.
dc.contributor.authorELIPE, G. Torralba
dc.contributor.authorULLA, A.
dc.contributor.authorUTRILLA, E.
dc.contributor.authorVALLENARI, A.
dc.contributor.authorVAN DILLEN, E.
hal.structure.identifierJoseph Louis LAGRANGE [LAGRANGE]
dc.contributor.authorZHAO, H.
hal.structure.identifierInstitut d'Astrophysique de Paris [IAP]
dc.contributor.authorZOREC, J.
dc.date.issued2023
dc.identifier.issn0004-6361
dc.description.abstractEnContext: The Gaia Radial Velocity Spectrometer provides the unique opportunity of a spectroscopic analysis of millions of stars at medium-resolution in the near-infrared. This wavelength range includes the Ca II infrared triplet (IRT), which is a good diagnostics of magnetic activity in the chromosphere of late-type stars.Aims: Here we present the method devised for inferring the Gaia stellar activity index together with its scientific validation.Methods: A sample of well studied PMS stars is considered to identify the regime in which the Gaia stellar activity index may be affected by mass accretion. The position of these stars in the colour-magnitude diagram and the correlation with the amplitude of the photometric rotational modulation is also scrutinised.Results. Gaia DR3 contains a stellar activity index derived from the Ca ii IRT for some 2 × 106nstars in the Galaxy. This represents a gold mine for studies on stellar magnetic activity and mass accretion in the solar vicinity. Three regimes of the chromospheric stellar activity are identified, confirming suggestions made by previous authors on much smaller R'HK datasets. The highest stellar activity regime is associated with PMS stars and RS CVn systems, in which activity is enhanced by tidal interaction. Some evidence of a bimodal distribution in MS stars with Teff ⩾ 5000 Kis also found, which defines the two other regimes, without a clear gap in between. Stars with 3500 K ≤ Teff ≤ 5000 K are found to be either very active PMS stars or active MS stars with a unimodal distribution in chromospheric activity. A dramatic change in the activity distribution is found for Teff ≤ 3500 K, with a dominance of low activity stars close to the transition between partially- and fully-convective stars and a rise in activitydown into the fully-convective regime.
dc.language.isoen
dc.publisherEDP Sciences
dc.subject.enStars: activity
dc.subject.enStars: chromospheres
dc.subject.enStars: late-type
dc.subject.enStars: pre-main sequence
dc.subject.enMethods: data analysis
dc.subject.enCatalogs
dc.subject.enStars: activity
dc.title.enGaia Data Release 3. Stellar chromospheric activity and mass accretion from Ca II IRT observed by the Radial Velocity Spectrometer
dc.typeArticle de revue
dc.identifier.doi10.1051/0004-6361/202244156
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Astrophysique stellaire et solaire [astro-ph.SR]
dc.identifier.arxiv2206.05766
bordeaux.journalAstronomy and Astrophysics - A&A
bordeaux.pageA30
bordeaux.volume674
bordeaux.peerReviewedoui
hal.identifierhal-04072603
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04072603v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Astronomy%20and%20Astrophysics%20-%20A&A&rft.date=2023&rft.volume=674&rft.spage=A30&rft.epage=A30&rft.eissn=0004-6361&rft.issn=0004-6361&rft.au=LANZAFAME,%20A.%20C.&BRUGALETTA,%20E.&FR%C3%89MAT,%20Y.&SORDO,%20R.&CREEVEY,%20O.%20L.&rft.genre=article


Fichier(s) constituant ce document

FichiersTailleFormatVue

Il n'y a pas de fichiers associés à ce document.

Ce document figure dans la(les) collection(s) suivante(s)

Afficher la notice abrégée