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MINCE I. Presentati...
MINCE I. Presentation of the project and of the first year sample
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- Cescutti, G. (författare)
- Univ Trieste, Dipartimento Fis, Sez Astron, Via G B Tiepolo 11, I-34143 Trieste, Italy.;INAF Osservatorio Astron Trieste, Via Tiepolo 11, I-34143 Trieste, Italy.;INFN, Sez Trieste, Via A Valerio 2, I-34127 Trieste, Italy.
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- Bonifacio, P. (författare)
- Univ PSL, GEPI Observ Paris, CNRS, 5 Pl Jules Janssen, F-92190 Meudon, France.
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- Caffau, E. (författare)
- Univ PSL, GEPI Observ Paris, CNRS, 5 Pl Jules Janssen, F-92190 Meudon, France.
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- Monaco, L. (författare)
- Univ Andres Bello, Dept Ciencias Fis, Condes, Faculdad Ciencias Exactas, Ave Fernandez Concha 700, Santiago, Chile.
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- Franchini, M. (författare)
- INAF Osservatorio Astron Trieste, Via Tiepolo 11, I-34143 Trieste, Italy.
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- Lombardo, L. (författare)
- Univ PSL, GEPI Observ Paris, CNRS, 5 Pl Jules Janssen, F-92190 Meudon, France.
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- Pinto, A. M. Matas (författare)
- Univ PSL, GEPI Observ Paris, CNRS, 5 Pl Jules Janssen, F-92190 Meudon, France.
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- Lucertini, F. (författare)
- Univ Andres Bello, Dept Ciencias Fis, Condes, Faculdad Ciencias Exactas, Ave Fernandez Concha 700, Santiago, Chile.;European Southern Observ, ESO, Santiago 3107, Chile.
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- Francois, P. (författare)
- Univ PSL, GEPI Observ Paris, CNRS, 5 Pl Jules Janssen, F-92190 Meudon, France.;Univ Picardie Jules Verne, UPJV, Pole Sci, 33 Rue St Leu, F-80039 Amiens, France.
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- Spitoni, E. (författare)
- Univ Cote Azur, Observ Cote Azur, CNRS, Lab Lagrange, Bd Observ CS 34229, F-06304 Nice 4, France.;Aarhus Univ, Stellar Astrophys Ctr, Dept Phys & Astron, Ny Munkegade 120, DK-8000 Aarhus, Denmark.
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- Lallement, R. (författare)
- Univ PSL, GEPI Observ Paris, CNRS, 5 Pl Jules Janssen, F-92190 Meudon, France.
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- Sbordone, L. (författare)
- European Southern Observ, ESO, Santiago 3107, Chile.
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- Mucciarelli, A. (författare)
- Univ Bologna, Dipartimento Fis & Astron, Via Gobetti 93-2, I-40129 Bologna, Italy.;INAF Osservatorio Astrofis & Sci Spazio Bologna, Via Gobetti 93-3, I-40129 Bologna, Italy.
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- Spite, M. (författare)
- Univ PSL, GEPI Observ Paris, CNRS, 5 Pl Jules Janssen, F-92190 Meudon, France.
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- Hansen, C. J. (författare)
- Goethe Univ Frankfurt, Inst Appl Phys, Max Von Laue Str 12, D-60438 Frankfurt, Germany.;Tech Univ Darmstadt, Inst Nucl Phys, Schlossgartenstr 2 S2 11, Darmstadt, Germany.
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- Di Marcantonio, P. (författare)
- INAF Osservatorio Astron Trieste, Via Tiepolo 11, I-34143 Trieste, Italy.
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- Kucinskas, A. (författare)
- Vilnius Univ, Inst Theoret Phys & Astron, Sauletekio al 3, LT-10257 Vilnius, Lithuania.
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- Dobrovolskas, V. (författare)
- Vilnius Univ, Inst Theoret Phys & Astron, Sauletekio al 3, LT-10257 Vilnius, Lithuania.
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- Korn, Andreas J., 1972- (författare)
- Uppsala universitet,Observationell astrofysik
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- Valentini, M. (författare)
- Leibniz Inst Astrophys Potsdam AIP, Sternwarte 16, D-14482 Potsdam, Germany.
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- Magrini, L. (författare)
- INAF Osserv Astrofis Arcetri, Largo E Fermi 5,, I-5012 Florence, Italy.
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- Cristallo, S. (författare)
- INAF Osservatorio Astron Abruzzo, Via Mentore Maggini snc, I-64100 Teramo, Italy.
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- Matteucci, F. (författare)
- Univ Trieste, Dipartimento Fis, Sez Astron, Via G B Tiepolo 11, I-34143 Trieste, Italy.;INAF Osservatorio Astron Trieste, Via Tiepolo 11, I-34143 Trieste, Italy.;INFN, Sez Trieste, Via A Valerio 2, I-34127 Trieste, Italy.
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Univ Trieste, Dipartimento Fis, Sez Astron, Via G B Tiepolo 11, I-34143 Trieste, Italy;INAF Osservatorio Astron Trieste, Via Tiepolo 11, I-34143 Trieste, Italy.;INFN, Sez Trieste, Via A Valerio 2, I-34127 Trieste, Italy. Univ PSL, GEPI Observ Paris, CNRS, 5 Pl Jules Janssen, F-92190 Meudon, France. (creator_code:org_t)
- 2022-12-19
- 2022
- Engelska.
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Ingår i: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 668
- Relaterad länk:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
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- Context. In recent years, Galactic archaeology has become a particularly vibrant field of astronomy, with its main focus set on the oldest stars of our Galaxy. In most cases, these stars have been identified as the most metal-poor. However, the struggle to find these ancient fossils has produced an important bias in the observations - in particular, the intermediate metal-poor stars (-2.5 < [Fe/H] < -1.5) have been frequently overlooked. The missing information has consequences for the precise study of the chemical enrichment of our Galaxy, in particular for what concerns neutron capture elements and it will be only partially covered by future multi object spectroscopic surveys such as WEAVE and 4MOST.Aims. Measuring at Intermediate Metallicity Neutron Capture Elements (MINCE) is gathering the first high-quality spectra (high signal-to-noise ratio, S/N, and high resolution) for several hundreds of bright and metal-poor stars, mainly located in our Galactic halo.Methods. We compiled our selection mainly on the basis of Gaia data and determined the stellar atmospheres of our sample and the chemical abundances of each star.Results. In this paper, we present the first sample of 59 spectra of 46 stars. We measured the radial velocities and computed the Galactic orbits for all stars. We found that 8 stars belong to the thin disc, 15 to disrupted satellites, and the remaining cannot be associated to the mentioned structures, and we call them halo stars. For 33 of these stars, we provide abundances for the elements up to zinc. We also show the chemical evolution results for eleven chemical elements, based on recent models.Conclusions. Our observational strategy of using multiple telescopes and spectrographs to acquire high S/N and high-resolution spectra for intermediate-metallicity stars has proven to be very efficient, since the present sample was acquired over only about one year of observations. Finally, our target selection strategy, after an initial adjustment, proved satisfactory for our purposes.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Nyckelord
- Galaxy: evolution
- Galaxy: formation
- Galaxy: halo
- stars: abundances
- stars: atmospheres
- nuclear reactions
- nucleosynthesis
- abundances
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Till lärosätets databas
- Av författaren/redakt...
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Cescutti, G.
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Bonifacio, P.
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Caffau, E.
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Monaco, L.
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Franchini, M.
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Lombardo, L.
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visa fler...
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Pinto, A. M. Mat ...
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Lucertini, F.
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Francois, P.
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Spitoni, E.
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Lallement, R.
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Sbordone, L.
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Mucciarelli, A.
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Spite, M.
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Hansen, C. J.
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Di Marcantonio, ...
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Kucinskas, A.
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Dobrovolskas, V.
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Korn, Andreas J. ...
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Valentini, M.
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Magrini, L.
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Cristallo, S.
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Matteucci, F.
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- NATURVETENSKAP
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NATURVETENSKAP
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Astronomy and As ...
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Uppsala universitet