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The Gaia-ESO Survey :
The Gaia-ESO Survey : open clusters in Gaia-DR1 A way forward to stellar age calibration
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- Randich, S. (författare)
- INAF, Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy,INAF - Osservatorio Astrofisico di Arcetri,Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences
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- Tognelli, E. (författare)
- Univ Pisa, Dept Phys E Fermi, Largo Bruno Pontecorvo 3, I-56127 Pisa, Italy;Ist Nazl Fis Nucl, Sect Pisa, Largo Bruno Pontecorvo 3, I-56127 Pisa, Italy,INFN Section of Pisa,University of Pisa
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- Jackson, R. (författare)
- Univ Keele, Astrophys Grp, Keele ST5 5BG, Staffs, England,Keele University
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- Jeffries, R. D. (författare)
- Univ Keele, Astrophys Grp, Keele ST5 5BG, Staffs, England,Keele University
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- Degl'Innocenti, S. (författare)
- Univ Pisa, Dept Phys E Fermi, Largo Bruno Pontecorvo 3, I-56127 Pisa, Italy;Ist Nazl Fis Nucl, Sect Pisa, Largo Bruno Pontecorvo 3, I-56127 Pisa, Italy,University of Pisa,INFN Section of Pisa
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- Pancino, E. (författare)
- INAF, Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy,INAF - Osservatorio Astrofisico di Arcetri
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- Fiorentin, P. Re (författare)
- INAF, Osservatorio Astrofisico Torino, Via Osservatorio 20, I-10025 Pino Torinese, Italy
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- Spagna, A. (författare)
- INAF, Osservatorio Astrofisico Torino, Via Osservatorio 20, I-10025 Pino Torinese, Italy
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- Sacco, G. (författare)
- INAF, Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy,INAF - Osservatorio Astrofisico di Arcetri,University of Porto
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- Bragaglia, A. (författare)
- INAF, Osservatorio Astronomico Bologna, Via Gobetti 93-3, I-40129 Bologna, Italy;INAF, Osservatorio Astron Padova, Vicolo Osservatorio 5, I-35122 Padua, Italy
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- Magrini, L. (författare)
- INAF, Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy,INAF - Osservatorio Astrofisico di Arcetri
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- Moroni, P. G. Prada (författare)
- Univ Pisa, Dept Phys E Fermi, Largo Bruno Pontecorvo 3, I-56127 Pisa, Italy;Ist Nazl Fis Nucl, Sect Pisa, Largo Bruno Pontecorvo 3, I-56127 Pisa, Italy,INFN Section of Pisa,University of Pisa,University of Cambridge
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- Alfaro, E. (författare)
- CSIC, IAA, E-18008 Granada, Spain,CSIC Instituto de Astrofísica de Andalucía (IAA)
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- Franciosini, E. (författare)
- INAF, Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy,INAF - Osservatorio Astrofisico di Arcetri,CSIC Centro de Astrobiologia (INTA)
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- Morbidelli, L. (författare)
- INAF, Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy,INAF - Osservatorio Astrofisico di Arcetri
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- Roccatagliata, V. (författare)
- INAF, Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy,INAF - Osservatorio Astrofisico di Arcetri
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- Bouy, H. (författare)
- Univ Bordeaux, CNRS, B18N, Lab Astrophys Bordeaux, Allee Geoffroy St Hilaire, F-33615 Pessac, France,Bordeaux Observatory
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- Bravi, L. (författare)
- INAF, Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy;Univ Florence, Dipartimento Fis & Astron, Via G Sansone 1, I-50019 Florence, Italy,INAF - Osservatorio Astrofisico di Arcetri,University of Florence
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- Jimenez-Esteban, F. M. (författare)
- CSIC, INTA, Ctr Astrobiol, Dept Astrofis, POB 78, Madrid 28691, Spain
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- Jordi, C. (författare)
- Univ Barcelona, Inst Ciencies Cosmos ICCUB, Dept Fis Quant & Astrofis, E-08007 Barcelona, Spain,University of Barcelona
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- Zari, E. (författare)
- Leiden Observ, Niels Bohrweg 2, NL-2333 CA Leiden, Netherlands,Leiden University
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- Tautvaisiene, G. (författare)
- Vilnius Univ, Inst Theoret Phys & Astron, Sauletekio Al 3, LT-10222 Vilnius, Lithuania,Vilnius University
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- Drazdauskas, A. (författare)
- Vilnius Univ, Inst Theoret Phys & Astron, Sauletekio Al 3, LT-10222 Vilnius, Lithuania,Vilnius University
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- Mikolaitis, S. (författare)
- Vilnius Univ, Inst Theoret Phys & Astron, Sauletekio Al 3, LT-10222 Vilnius, Lithuania,Vilnius University
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- Gilmore, G. (författare)
- Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England,University of Padova
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- Feltzing, S. (författare)
- Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science
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- Vallenari, A. (författare)
- INAF - Osservatorio Astronomico di Padova
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- Bensby, T. (författare)
- Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science
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- Koposov, S. (författare)
- Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England,University of Cambridge
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- Korn, Andreas, 1972- (författare)
- Uppsala University,Uppsala universitet,Teoretisk astrofysik,Observationell astrofysik
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- Lanzafame, A. (författare)
- Univ Catania, Sez Astrofis, Dipartimento Fis & Astron, Via S Sofia 78, I-95123 Catania, Italy,University of Catania
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- Smiljanic, R. (författare)
- Polish Acad Sci, Nicolaus Copernicus Astron Ctr, Ul Bartycka 18, PL-00716 Warsaw, Poland
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- Bayo, A. (författare)
- Univ Valpariso, Inst Fis & Astron, Valparaiso, Chile,University of Valparaíso
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- Carraro, G. (författare)
- Univ Padua, Dipartimento Fis & Astron, Vicolo Osservatorio 3, I-35122 Padua, Italy
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- Costado, M. T. (författare)
- CSIC, IAA, E-18008 Granada, Spain,CSIC Instituto de Astrofísica de Andalucía (IAA)
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- Heiter, Ulrike (författare)
- Uppsala University,Uppsala universitet,Observationell astrofysik
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- Hourihane, A. (författare)
- Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England,University of Cambridge
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- Jofre, P. (författare)
- Univ Diego Portales, Nucl Astron, Av Ejexrcito 441, Santiago, Chile,Diego Portales University
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- Lewis, J. (författare)
- Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England,University of Cambridge
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- Monaco, L. (författare)
- Univ Andres Bello, Dept Ciencias Fisicas, Fernandez Concha 700, Santiago, Chile,Andrés Bello National University
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- Prisinzano, L. (författare)
- INAF, Osservatorio Astron Palermo, Piazza Parlamento 1, I-90134 Palermo, Italy,INAF Palermo Astronomical Observatory
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- Sbordone, L. (författare)
- European Southern Observ, Vitacura, Santiago De Chi, Chile,European Southern Observatory Santiago
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- Sousa, S. G. (författare)
- Univ Porto, Inst Astrofis & Ciencias Espaco, CAUP, Rua Estrelas, P-4150762 Porto, Portugal
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- Worley, C. C. (författare)
- Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England,University of Cambridge
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- Zaggia, S. (författare)
- INAF - Osservatorio Astronomico di Padova
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(creator_code:org_t)
- 2018-05-04
- 2018
- Engelska.
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Ingår i: Astronomy and Astrophysics. - : EDP SCIENCES S A. - 0004-6361 .- 1432-0746. ; 612
- Relaterad länk:
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https://www.aanda.or...
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http://dx.doi.org/10...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://lup.lub.lu.s...
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Abstract
Ämnesord
Stäng
- Context. Determination and calibration of the ages of stars, which heavily rely on stellar evolutionary models, are very challenging, while representing a crucial aspect in many astrophysical areas. Aims. We describe the methodologies that, taking advantage of Gaia-DR1 and the Gaia-ESO Survey data, enable the comparison of observed open star cluster sequences with stellar evolutionary models. The final, long-term goal is the exploitation of open clusters as age calibrators.Methods. We perform a homogeneous analysis of eight open clusters using the Gaia-DR1 TGAS catalogue for bright members and information from the Gaia-ESO Survey for fainter stars. Cluster membership probabilities for the Gaia-ESO Survey targets are derived based on several spectroscopic tracers. The Gaia-ESO Survey also provides the cluster chemical composition. We obtain cluster parallaxes using two methods. The first one relies on the astrometric selection of a sample of bona fide members, while the other one fits the parallax distribution of a larger sample of TGAS sources. Ages and reddening values are recovered through a Bayesian analysis using the 2MASS magnitudes and three sets of standard models. Lithium depletion boundary (LDB) ages are also determined using literature observations and the same models employed for the Bayesian analysis.Results. For all but one cluster, parallaxes derived by us agree with those presented in Gaia Collaboration (2017, A&A, 601, A19), while a discrepancy is found for NGC 2516; we provide evidence supporting our own determination. Inferred cluster ages are robust against models and are generally consistent with literature values.Conclusions. The systematic parallax errors inherent in the Gaia DR1 data presently limit the precision of our results. Nevertheless, we have been able to place these eight clusters onto the same age scale for the first time, with good agreement between isochronal and LDB ages where there is overlap. Our approach appears promising and demonstrates the potential of combining Gaia and ground-based spectroscopic datasets.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Nyckelord
- parallaxes
- surveys
- stars: evolution
- open clusters and associations: general
- open clusters and associations: general
- Parallaxes
- stars: evolution
- surveys
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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- Av författaren/redakt...
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Randich, S.
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Tognelli, E.
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Jackson, R.
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Jeffries, R. D.
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Degl'Innocenti, ...
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Pancino, E.
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visa fler...
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Fiorentin, P. Re
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Spagna, A.
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Sacco, G.
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Bragaglia, A.
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Magrini, L.
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Moroni, P. G. Pr ...
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Alfaro, E.
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Franciosini, E.
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Morbidelli, L.
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Roccatagliata, V ...
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Bouy, H.
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Bravi, L.
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Jimenez-Esteban, ...
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Jordi, C.
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Zari, E.
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Tautvaisiene, G.
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Drazdauskas, A.
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Mikolaitis, S.
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Gilmore, G.
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Feltzing, S.
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Vallenari, A.
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Bensby, T.
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Koposov, S.
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Korn, Andreas, 1 ...
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Lanzafame, A.
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Smiljanic, R.
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Bayo, A.
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Carraro, G.
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Costado, M. T.
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Heiter, Ulrike
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Hourihane, A.
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Jofre, P.
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Lewis, J.
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Monaco, L.
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Prisinzano, L.
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Sbordone, L.
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Sousa, S. G.
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Worley, C. C.
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Zaggia, S.
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Uppsala universitet
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