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The SAPP pipeline f...
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Gent, Matthew RaymondMax Planck Inst Astron, D-69117 Heidelberg, Germany
(författare)
The SAPP pipeline for the determination of stellar abundances and atmospheric parameters of stars in the core program of the PLATO mission
- Artikel/kapitelEngelska2022
Förlag, utgivningsår, omfång ...
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2022-02-11
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EDP Sciences,2022
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electronicrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:uu-469774
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-469774URI
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https://doi.org/10.1051/0004-6361/202140863DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
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We introduce the SAPP (Stellar Abundances and atmospheric Parameters Pipeline), the prototype of the code that will be used to determine parameters of stars observed within the core program of the PLATO space mission. The pipeline is based on the Bayesian inference and provides effective temperature, surface gravity, metallicity, chemical abundances, and luminosity. The code in its more general version has a much wider range of potential applications. It can also provide masses, ages, and radii of stars and can be used with stellar types not targeted by the PLATO core program, such as red giants. We validate the code on a set of 27 benchmark stars that includes 19 FGK-type dwarfs, 6 GK-type subgiants, and 2 red giants. Our results suggest that combining various observables is the optimal approach, as this allows the degeneracies between different parameters to be broken and yields more accurate values of stellar parameters and more realistic uncertainties. For the PLATO core sample, we obtain a typical uncertainty of 27 (syst.) +/- 37 (stat.) K for T-eff, 0.00 +/- 0.01 dex for log g, 0.02 +/- 0.02 dex for metallicity [Fe/H], -0.01 +/- 0.03 R-circle dot for radii, -0.01 +/- 0.05 M-circle dot for stellar masses, and -0.14 +/- 0.63 Gyr for ages. We also show that the best results are obtained by combining the nu(max) scaling relation with stellar spectra. This resolves the notorious problem of degeneracies, which is particularly important for F-type stars.
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Biuppslag (personer, institutioner, konferenser, titlar ...)
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Bergemann, MariaMax Planck Inst Astron, D-69117 Heidelberg, Germany.;Univ Copenhagen, Niels Bohr Int Acad, NBI, Blegdamsvej 17, DK-2100 Copenhagen, Denmark
(författare)
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Serenelli, AldoMax Planck Inst Astron, D-69117 Heidelberg, Germany.;CSIC, Inst Space Sci, ICE, Carrer Can Magrans S-N, Cerdanyola Del Valles 08193, Spain.;Inst Estudis Espacials Catalunya IEEC, Carrer Gran Capita 2, Barcelona 08034, Spain
(författare)
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Casagrande, LucaAustralian Natl Univ, Res Sch Astron & Astrophys, Mt Stromlo Observ, Canberra, ACT 2611, Australia
(författare)
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Gerber, Jeffrey M.Max Planck Inst Astron, D-69117 Heidelberg, Germany
(författare)
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Heiter, UlrikeUppsala universitet,Observationell astrofysik(Swepub:uu)ulhei450
(författare)
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Kovalev, MikhailMax Planck Inst Astron, D-69117 Heidelberg, Germany.;Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650216, Yunnan, Peoples R China
(författare)
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Morel, ThierryUniv Liege, Space Sci Technol & Astrophys Res STAR Inst, Quartier Agora,Allee 6 Aout 19c,Bat B5C, B-4000 Liege, Belgium
(författare)
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Nardetto, NicolasUniv Cote dAzur, Observ Cote dAzur, CNRS, Lagrange, CS 34229, Nice, France
(författare)
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Adibekyan, VardanMTA ELTE Exoplanet Res Grp, Budapest, Hungary.;Univ Porto, Inst Astrofis & Ciencias Espaco, CAUP, Rua Estrelas, P-4150762 Porto, Portugal
(författare)
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Aguirre, Victor SilvaAarhus Univ, Dept Phys & Astron, Ny Munkegade 120-1520, DK-8000 Aarhus, Denmark
(författare)
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Asplund, MartinMax Planck Inst Astrophys, Karl Schwarzschild Str 1, D-85741 Garching, Germany
(författare)
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Belkacem, KevinLESIA, Observ Paris Site Meudon, 5 P1 Jules Janssen, F-92195 Meudon, France
(författare)
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del Burgo, CarlosInst Nacl Astrofis Opt & Electr, Luis Enrique Erro 1, Puebla 72840, Mexico.;Inst Astrofis Canarias, Tenerife 38205, Spain
(författare)
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Bigot, LionelUniv Cote dAzur, Observ Cote dAzur, CNRS, Lagrange, CS 34229, Nice, France
(författare)
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Chiavassa, AndreaUniv Cote dAzur, Observ Cote dAzur, CNRS, Lagrange, CS 34229, Nice, France
(författare)
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Diaz, Luisa Fernanda RodriguezAarhus Univ, Dept Phys & Astron, Ny Munkegade 120-1520, DK-8000 Aarhus, Denmark
(författare)
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Goupil, Marie-JoLESIA, Observ Paris Site Meudon, 5 P1 Jules Janssen, F-92195 Meudon, France
(författare)
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Hernandez, Jonay I. GonzalezInst Astrofis Canarias, Tenerife 38205, Spain.;Univ La Laguna, Dept Astrofis, Tenerife 38206, Spain
(författare)
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Mourard, DenisUniv Cote dAzur, Observ Cote dAzur, CNRS, Lagrange, CS 34229, Nice, France
(författare)
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Merle, ThibaultUniv Libre Bruxelles, Inst Astron & dAstrophys, CP 226,Blvd Triomphe, B-1050 Brussels, Belgium
(författare)
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Meszaros, SzabolcsEotvos Lorand Univ, Gothard Astrophys Observ, Szent Imre H St 112, H-9700 Szombathely, Hungary.;MTA ELTE Exoplanet Res Grp, Budapest, Hungary.;MTA ELTE Lendulet Milky Way Res Grp, Budapest, Hungary
(författare)
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Marshall, Douglas J.Univ Toulouse, IRAP, UPS OMP, F-31028 Toulouse 4, France.;IRAP, CNRS, 9 Av Colonel Roche,BP 44346, F-31028 Toulouse 4, France
(författare)
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Ouazzani, Rhita-MariaLESIA, Observ Paris Site Meudon, 5 P1 Jules Janssen, F-92195 Meudon, France
(författare)
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Plez, BertrandUniv Montpellier, CNRS, LUPM, Montpellier, France
(författare)
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Reese, DanielObserv Paris, LESIA, Bat 14 Soleil Planetes,5 Pl Jules Janssen, F-92195 Meudon, France
(författare)
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Trampedach, RegnerSpace Sci Inst, 4765 Walnut St, Boulder, CO 80301 USA
(författare)
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Tsantaki, MariaIst Nazl Astrofis INAF, Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy
(författare)
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Max Planck Inst Astron, D-69117 Heidelberg, GermanyMax Planck Inst Astron, D-69117 Heidelberg, Germany.;Univ Copenhagen, Niels Bohr Int Acad, NBI, Blegdamsvej 17, DK-2100 Copenhagen, Denmark
(creator_code:org_t)
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Ingår i:Astronomy and Astrophysics: EDP Sciences6580004-63611432-0746
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Gent, Matthew Ra ...
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Bergemann, Maria
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Serenelli, Aldo
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Casagrande, Luca
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Gerber, Jeffrey ...
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Heiter, Ulrike
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visa fler...
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Kovalev, Mikhail
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Morel, Thierry
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Nardetto, Nicola ...
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Adibekyan, Varda ...
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Aguirre, Victor ...
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Asplund, Martin
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Belkacem, Kevin
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del Burgo, Carlo ...
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Bigot, Lionel
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Chiavassa, Andre ...
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Diaz, Luisa Fern ...
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Goupil, Marie-Jo
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Hernandez, Jonay ...
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Mourard, Denis
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Merle, Thibault
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Meszaros, Szabol ...
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Marshall, Dougla ...
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Ouazzani, Rhita- ...
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Plez, Bertrand
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Reese, Daniel
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Trampedach, Regn ...
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Tsantaki, Maria
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visa färre...
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